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Damage Modeling Of Composite Structures

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Damage Modeling of Composite Structures

Damage Modeling of Composite Structures Book
Author : Pengfei Liu
Publisher : Elsevier
Release : 2021-03-10
ISBN : 0323853536
Language : En, Es, Fr & De

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Book Description :

Damage Modeling of Composite Structures: Strength, Fracture, and Finite Element Analysis provides readers with a fundamental overview of the mechanics of composite materials, along with an outline of an array of modeling and numerical techniques used to analyze damage, failure mechanisms and safety tolerance. Strength prediction and finite element analysis of laminated composite structures are both covered, as are modeling techniques for delaminated composites under compression and shear. Viscoelastic cohesive/friction coupled model and finite element analysis for delamination analysis of composites under shear and for laminates under low-velocity impact are all covered at length. A concluding chapter discusses multiscale damage models and finite element analysis of composite structures. Integrates intralaminar damage and interlaminar delamination under different load patterns, covering intralaminar damage constitutive models, failure criteria, damage evolution laws, and virtual crack closure techniques Discusses numerical techniques for progressive failure analysis and modeling, as well as numerical convergence and mesh sensitivity, thus allowing for more accurate modeling Features models and methods that can be seamlessly extended to analyze failure mechanisms and safety tolerance of composites under more complex loads, and in more extreme environments Demonstrates applications of damage models and numerical methods

Developments in Impact Damage Modeling for Laminated Composite Structures

Developments in Impact Damage Modeling for Laminated Composite Structures Book
Author : Ernest F. Dost
Publisher : Unknown
Release : 2021-12-03
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Developments in Impact Damage Modeling for Laminated Composite Structures book written by Ernest F. Dost, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Durability of Tubular Composite Structures

Durability of Tubular Composite Structures Book
Author : Paul Treasurer,Université de Franche-comté. UFR des sciences et techniques
Publisher : Unknown
Release : 2010
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Durability of Tubular Composite Structures book written by Paul Treasurer,Université de Franche-comté. UFR des sciences et techniques, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Modeling the Effect of Damage in Composite Structures

Modeling the Effect of Damage in Composite Structures Book
Author : Christos Kassapoglou
Publisher : John Wiley & Sons
Release : 2015-03-11
ISBN : 1119013240
Language : En, Es, Fr & De

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Book Description :

Comprehensively covers new and existing methods for the design and analysis of composites structures with damage present Provides efficient and accurate approaches for analysing structures with holes and impact damage Introduces a new methodology for fatigue analysis of composites Provides design guidelines, and step by step descriptions of how to apply the methods, along with evaluation of their accuracy and applicability Includes problems and exercises Accompanied by a website hosting lecture slides and solutions

Progressive Damage Modeling of Tensile Deformation of a Fiber Reinforced Composite Laminate Under Strain Rate Effects

Progressive Damage Modeling of Tensile Deformation of a Fiber Reinforced Composite Laminate Under Strain Rate Effects Book
Author : Shiguang Deng,University of Wyoming. Mechanical Engineering Department
Publisher : Unknown
Release : 2012
ISBN : 9781267648990
Language : En, Es, Fr & De

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Book Description :

Finite element modeling provides an efficient approach to simulate the mechanical behaviors of composite materials. Many finite element models were built to predict the mechanical responses of composite materials under the static loading conditions. Such static-loading models of composite materials were too modest to predict their behaviors under the dynamic loading process, say varying strain rates. In this thesis, we established both macromechanical and micromechanical finite element models to simulate the progressive damages of fiber reinforced composite materials under varying intermediate strain rates. With the application of the strain-rate-dependent composite properties, failure analysis and associated property degradations of failed composites, we were able to build a macromechanical finite element model to simulate the strain-rate-dependent mechanical behaviors of composite materials under intermediate strain rates. Through the comparison of our numerical results with experimental observations and modeling results reported in the literature, recommended values of mesh densities were presented and the correctness of our macromechanical mode was validated. The model was further developed with a multicontinuum theory (MCT). Based on the macromechanical model, a micromechanical model was developed to study the effects of a MCT-based constituent stress interactive failure criterion on the numerical results of a tensile test on a composite coupon with varying strain rates. The MCT is based on a constituent volume average procedure and was used to calculate the stress and strain states of every constituent within the composite. Based on the stress information of the constituents, associated failure criteria and degradation rules were presented for the model. By comparing the simulation results of the macromechanical and micromechanical models, we found some differences between them and further recommendations were given for modifying the present model to simulate the progressive damage dynamic responses of composite structures more precisely.

Modeling the Effect of Damage in Composite Structures

Modeling the Effect of Damage in Composite Structures Book
Author : Christos Kassapoglou
Publisher : John Wiley & Sons
Release : 2015-05-06
ISBN : 1119013216
Language : En, Es, Fr & De

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Book Description :

Comprehensively covers new and existing methods for the design and analysis of composites structures with damage present Provides efficient and accurate approaches for analysing structures with holes and impact damage Introduces a new methodology for fatigue analysis of composites Provides design guidelines, and step by step descriptions of how to apply the methods, along with evaluation of their accuracy and applicability Includes problems and exercises Accompanied by a website hosting lecture slides and solutions

Adaptive tolerant and efficient composite structures

Adaptive  tolerant and efficient composite structures Book
Author : Martin Wiedemann,Michael Sinapius
Publisher : Springer Science & Business Media
Release : 2012-08-01
ISBN : 3642291902
Language : En, Es, Fr & De

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Book Description :

Composite structures are most efficient in performance and production cost when combined with smart materials making them adaptable to changing operational conditions. The specific production processes of composites offer the possibility to integrate more functions thus making the structure more valuable. Active functions can be realized by smart materials, e.g. morphing, active vibration control, active structure acoustic control or structure health monitoring. The foundation is a sound understanding of materials, design methods, design principles, production technologies and adaptronics. Along the complete process chain this disciplines together deliver advanced lightweight solutions for applications ranging from mechanical engineering to vehicles, airframe and finally space structures. This book provides the scientific foundations as well as inspiring new ideas for engineers working in the field of composite lightweight structures.

Fatigue Life Prediction of Composites and Composite Structures

Fatigue Life Prediction of Composites and Composite Structures Book
Author : Anastasios P. Vassilopoulos
Publisher : Woodhead Publishing
Release : 2019-10-08
ISBN : 0081025769
Language : En, Es, Fr & De

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Book Description :

Fatigue Life Prediction of Composites and Composite Structures, Second Edition, is a comprehensive review of fatigue damage and fatigue life modeling and prediction methodologies for composites and their use in practice. In this new edition, existing chapters are fully updated, while new chapters are introduced to cover the most recent developments in the field. The use of composites is growing in structural applications in many industries, including aerospace, marine, wind turbine and civil engineering. However, there are uncertainties about their long-term performance, including performance issues relating to cyclic fatigue loading that hinder the adoption of a commonly accepted credible fatigue design methodology for the life prediction of composite engineering structures. With its distinguished editor and international team of contributors, this book is a standard reference for industry professionals and researchers alike. Examines past, present and future trends associated with the fatigue life prediction of composite materials and structures Assesses novel computational methods for fatigue life modeling and prediction of composite materials under constant amplitude loading Covers a wide range of techniques for predicting fatigue, including their theoretical background and practical applications Addresses new topics and covers contemporary research developments in the field

Recent Advances in Structural Engineering Volume 1

Recent Advances in Structural Engineering  Volume 1 Book
Author : A. Rama Mohan Rao,K. Ramanjaneyulu
Publisher : Springer
Release : 2018-08-01
ISBN : 9811303622
Language : En, Es, Fr & De

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Book Description :

This book is a collection of select papers presented at the Tenth Structural Engineering Convention 2016 (SEC-2016). It comprises plenary, invited, and contributory papers covering numerous applications from a wide spectrum of areas related to structural engineering. It presents contributions by academics, researchers, and practicing structural engineers addressing analysis and design of concrete and steel structures, computational structural mechanics, new building materials for sustainable construction, mitigation of structures against natural hazards, structural health monitoring, wind and earthquake engineering, vibration control and smart structures, condition assessment and performance evaluation, repair, rehabilitation and retrofit of structures. Also covering advances in construction techniques/ practices, behavior of structures under blast/impact loading, fatigue and fracture, composite materials and structures, and structures for non-conventional energy (wind and solar), it will serve as a valuable resource for researchers, students and practicing engineers alike.

Progress in Durability Analysis of Composite Systems

Progress in Durability Analysis of Composite Systems Book
Author : K.L. Reifsnider
Publisher : CRC Press
Release : 1998-01-01
ISBN : 9789054109600
Language : En, Es, Fr & De

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Book Description :

Composite material systems are the basis for much of the natural world around us and are rapidly becoming the basis for many modern engineering components. A controlling feature for the general use of such systems is their damage tolerance, durability and reliability. The present book is a comprehensive cross section of the state of the art in the field of the durability of polymer-based, composite, and adhesive systems. As such, it is of special value to researchers concerned with the frontier of the field, to students concerned with the substance of the subject, and to the applied community concerned with the finding methodologies that make it possible to design safe and durable engineering components using material systems.

Numerical Modelling of Failure in Advanced Composite Materials

Numerical Modelling of Failure in Advanced Composite Materials Book
Author : Pedro P. Camanho,Stephen R. Hallett
Publisher : Woodhead Publishing
Release : 2015-08-07
ISBN : 0081003420
Language : En, Es, Fr & De

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Book Description :

Numerical Modelling of Failure in Advanced Composite Materials comprehensively examines the most recent analysis techniques for advanced composite materials. Advanced composite materials are becoming increasingly important for lightweight design in aerospace, wind energy, and mechanical and civil engineering. Essential for exploiting their potential is the ability to reliably predict their mechanical behaviour, particularly the onset and propagation of failure. Part One investigates numerical modeling approaches to interlaminar failure in advanced composite materials. Part Two considers numerical modelling approaches to intralaminar failure. Part Three presents new and emerging advanced numerical algorithms for modeling and simulation of failure. Part Four closes by examining the various engineering and scientific applications of numerical modeling for analysis of failure in advanced composite materials, such as prediction of impact damage, failure in textile composites, and fracture behavior in through-thickness reinforced laminates. Examines the most recent analysis models for advanced composite materials in a coherent and comprehensive manner Investigates numerical modelling approaches to interlaminar failure and intralaminar failure in advanced composite materials Reviews advanced numerical algorithms for modeling and simulation of failure Examines various engineering and scientific applications of numerical modelling for analysis of failure in advanced composite materials

Sustainable Composites for Aerospace Applications

Sustainable Composites for Aerospace Applications Book
Author : Mohammad Jawaid,Mohamed Thariq
Publisher : Woodhead Publishing
Release : 2018-04-27
ISBN : 0081021380
Language : En, Es, Fr & De

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Book Description :

Sustainable Composites for Aerospace Applications presents innovative advances in the fabrication, characterization and applications of LDH polymer nanocomposites. It covers fundamental structural and chemical knowledge and explores various properties and characterization techniques, including microscopic, spectroscopic and mechanical behaviors. Users will find a strong focus on the potential applications of LDH polymer nanocomposites, such as in energy, electronics, electromagnetic shielding, biomedical, agricultural, food packaging and water purification functions. This book provides comprehensive coverage of cutting-edge research in the field of LDH polymer nanocomposites and future applications, and is an essential read for all academics, researchers, engineers and students working in this area. Presents fundamental knowledge of LDH polymer nanocomposites, including chemical composition, structural features and fabrication techniques Provides an analytical overview of the different types of characterization techniques and technologies Contains extensive reviews on cutting-edge research for future applications in a variety of industries

Advanced Mechanics of Composite Materials and Structural Elements

Advanced Mechanics of Composite Materials and Structural Elements Book
Author : Valery V. Vasiliev,Evgeny V. Morozov
Publisher : Elsevier
Release : 2018-06-12
ISBN : 0081022107
Language : En, Es, Fr & De

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Book Description :

Advanced Mechanics of Composite Materials and Structures analyzes contemporary theoretical models at the micro- and macro levels of material structure. Its coverage of practical methods and approaches, experimental results, and optimization of composite material properties and structural component performance can be put to practical use by researchers and engineers. The fourth edition has been updated to reflect new manufacturing processes (such as 3D printing of two matrix composite structural elements) and new theories developed by the authors. The authors have expanded the content of advanced topic areas with new chapters on axisymmetric deformation of composite shells of revolution, composite pressure vessels, and anisogrid composite lattice structures. This revision includes enhanced sections on optimal design of laminated plates and additional examples of the finite element modelling of composite structures and numerical methods. Advanced Mechanics of Composite Materials and Structures, Fourth edition is unique in that it addresses a wide range of advanced problems in the mechanics of composite materials, such as the physical statistical aspects of fiber strength, stress diffusion in composites with damaged fibers, nonlinear elasticity, and composite pressure vessels to name a few. It also provides the foundation for traditional basic composite material mechanics, making it one of the most comprehensive references on this topic. Presents advanced material on composite structures, including chapters on composite pressure vessels and axisymmetric deformation of composite shells of revolution Provides the applications of composite materials to spacecraft, aircraft and marine included throughout Practical examples of analysis and design of real composite structural components

Segmentation of X ray CT and Ultrasonic Scans of Impacted Composite Structures for Damage State Interpretation and Model Generation

Segmentation of X ray CT and Ultrasonic Scans of Impacted Composite Structures for Damage State Interpretation and Model Generation Book
Author : Andrew Cannon Ellison
Publisher : Unknown
Release : 2020
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Composites are frequently used in aerospace structural applications due to their high strength to weight performance, but due to their layered structure they are vulnerable to transverse impacts. Impact damage in composite laminates often consists of highly interactive damage modes composed of delamination, matrix cracking, and fiber breakage. In order to ensure the safety of composite structures, a variety of non-destructive evaluation (NDE) techniques are used to characterize impact damage. However, procedures for utilizing NDE to create and validate models of residual strength after impact are not yet established due to either limitations in the characterization of impact damage, as in the case of Ultrasonic pulse-echo scanning (UT), or due to the complexity of interpretation of the NDE technique, as in the case of X-ray computed tomography (CT). Improved quantification of damage from CT and UT characterization may lead to improved predictive capabilities for the prediction of structural performance after an impact event. This work presents a novel automatic damage segmentation procedure for CT scans of impacted composites that converts the complex 3D dataset into simplified damage visualizations and 2D damage maps for each composite layer. The results of this procedure were utilized to create and validate a modeling procedure to improve UT characterization of impact damage, and to validate and generate finite element models of impact damage and residual strength performance. The generated residual strength models were created with varying levels of damage modeling fidelity and it was found that the level of damage modeling needed for accurate failure prediction depends greatly on the structural geometry and the presence of major damage features. This NDE and modeling effort was supported by a series of impact and residual strength experiments for flat and stringer stiffened composite panels. The developed techniques proved capable of characterizing impact damage in a variety of structural configurations and establishing models that incorporate this damage at different levels of complexity.

Design and Analysis of Composite Structures for Automotive Applications

Design and Analysis of Composite Structures for Automotive Applications Book
Author : Vladimir Kobelev
Publisher : John Wiley & Sons
Release : 2019-04-01
ISBN : 1119513847
Language : En, Es, Fr & De

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Book Description :

A design reference for engineers developing composite components for automotive chassis, suspension, and drivetrain applications This book provides a theoretical background for the development of elements of car suspensions. It begins with a description of the elastic-kinematics of the vehicle and closed form solutions for the vertical and lateral dynamics. It evaluates the vertical, lateral, and roll stiffness of the vehicle, and explains the necessity of the modelling of the vehicle stiffness. The composite materials for the suspension and powertrain design are discussed and their mechanical properties are provided. The book also looks at the basic principles for the design optimization using composite materials and mass reduction principles. Additionally, references and conclusions are presented in each chapter. Design and Analysis of Composite Structures for Automotive Applications: Chassis and Drivetrain offers complete coverage of chassis components made of composite materials and covers elastokinematics and component compliances of vehicles. It looks at parts made of composite materials such as stabilizer bars, wheels, half-axes, springs, and semi-trail axles. The book also provides information on leaf spring assembly for motor vehicles and motor vehicle springs comprising composite materials. Covers the basic principles for the design optimization using composite materials and mass reduction principles Evaluates the vertical, lateral, and roll stiffness of the vehicle, and explains the modelling of the vehicle stiffness Discusses the composite materials for the suspension and powertrain design Features closed form solutions of problems for car dynamics explained in details and illustrated pictorially Design and Analysis of Composite Structures for Automotive Applications: Chassis and Drivetrain is recommended primarily for engineers dealing with suspension design and development, and those who graduated from automotive or mechanical engineering courses in technical high school, or in other higher engineering schools.

Advanced Mechanics of Composite Materials and Structural Elements

Advanced Mechanics of Composite Materials and Structural Elements Book
Author : Valery Vasiliev,Evgeny V. Morozov
Publisher : Newnes
Release : 2013-06-19
ISBN : 0080982670
Language : En, Es, Fr & De

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Book Description :

Advanced Mechanics of Composite Materials and Structural Elements analyzes contemporary theoretical models at the micro- and macro levels of material structure. Its coverage of practical methods and approaches, experimental results, and optimization of composite material properties and structural component performance can be put to practical use by researchers and engineers. The third edition of the book consists of twelve chapters progressively covering all structural levels of composite materials from their constituents through elementary plies and layers to laminates and laminated composite structural elements. All-new coverage of beams, plates and shells adds significant currency to researchers. Composite materials have been the basis of many significant breakthroughs in industrial applications, particularly in aerospace structures, over the past forty years. Their high strength-to-weight and stiffness-to-weight ratios are the main material characteristics that attract the attention of the structural and design engineers. Advanced Mechanics of Composite Materials and Structural Elements helps ensure that researchers and engineers can continue to innovate in this vital field. Detailed physical and mathematical coverage of complex mechanics and analysis required in actual applications – not just standard homogeneous isotropic materials Environmental and manufacturing discussions enable practical implementation within manufacturing technology, experimental results, and design specifications. Discusses material behavior impacts in-depth such as nonlinear elasticity, plasticity, creep, structural nonlinearity enabling research and application of the special problems of material micro- and macro-mechanics

Engineering Design Reliability Applications

Engineering Design Reliability Applications Book
Author : Efstratios Nikolaidis,Dan M. Ghiocel,Suren Singhal
Publisher : CRC Press
Release : 2007-09-19
ISBN : 9781420051339
Language : En, Es, Fr & De

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Book Description :

In the current, increasingly aggressive business environment, crucial decisions about product design often involve significant uncertainty. Highlighting the competitive advantage available from using risk-based reliability design, Engineering Design Reliability Applications: For the Aerospace, Automotive, and Ship Industries provides an overview of how to apply probabilistic approaches and reliability methods to practical engineering problems using real life engineering applications. A one-step resource, the book demonstrates the latest technology, how others have used it to increase their competitiveness, and how you can use it to do the same. The book makes the case for accurate assessment of the reliability of engineering systems, simple, complex, or large-scale. It presents two computer programs for reliability analysis and demonstrates these programs on aircraft engines, structures used for testing explosives, medical and automotive systems. The focus then shifts to aircraft and space systems, including lap joints, gas turbines, and actively controlled space structures. The editors provide analytical tools for reliability analysis, design optimization, and sensitivity analysis of automotive systems. They include a general methodology for reliability assessment of ship structures and highlight reliability analysis of composite materials and structures. Delineating generic tools and computer programs applicable to any situation, the book shows you how to quantify, understand, and control uncertainties, reduce risk, and increase reliability using real-life examples. Engineers from the industry and national labs as well as university researchers present success stories and quantify the benefits of reliability design for their organizations. They demonstrate how to convince colleagues and management of the potential benefits of these approaches in allowing their organizations to gain significant benefits and dramatically increase their competitiveness.

An Isogeometric Analysis Framework for Progressive Damage Modeling of Multi Layer Composite Materials

An Isogeometric Analysis Framework for Progressive Damage Modeling of Multi Layer Composite Materials Book
Author : Marco Simone Pigazzini
Publisher : Unknown
Release : 2018
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Fiber-reinforced composite materials have become increasingly popular in the past few decades for lightweight applications, in particular in the aerospace industry where high strength-to-weight and high stiffness-to-weight ratio are considered key design parameters. At the same time, new computational technologies are required to support the design process of increasingly complex structural components and to predict damage growth under non-standard loading conditions. However, the development of accurate and computationally efficient analysis tools, capable of predicting the response of laminated composite structures from the elastic regime to the failure point and beyond, is a complex task. Difficulties stem from the inherent heterogeneous nature of fiber-reinforced polymer composite materials and from their multi-modal failure mechanisms. Composite structures optimized for low weight applications are often laminates, consisting of several layers of fiber-reinforced material, called laminae, bonded together. Intra-laminar damage may occur within a given lamina, and inter-laminar damage, or delamination, may occur when bonds between laminae break down. The unique challenges associated with modeling damage in these structures may be addressed by means of thin-shell formulations which is naturally developed in the context of Isogeometric Analysis. This dissertation presents a novel multi-layer modeling framework based on Isogeometric Analysis, where each ply or lamina is represented by a Non-Uniform Rational B-Spline (NURBS) surface, and it is modeled as a Kirchhoff-Love thin shell. A residual stiffness approach is used to model intra-laminar damage in the framework of Continuum Damage Mechanics. A new zero-thickness cohesive interface formulation is introduced to model delamination as well as permitting laminate-level transverse shear compliance. The gradient-enhanced continuum damage model is then introduced to regularize material instabilities, which are typically associated with strain-softening damage models. This nonlocal regularization technique aims to re-establish mesh objectivity by limiting the dependence of damage predictions on the choice of discrete mesh. To account for the anisotropic damage modes of laminae, the proposed formulation smooths a tensor-valued strain field by solving an elliptic partial differential equation system on each lamina. The proposed approach has significant accuracy and efficiency advantages over existing methods for modeling impact damage. These stem from the use of IGA-based Kirchhoff-Love shells to represent the individual plies of the composite laminate, while the compliant cohesive interfaces enable transverse shear deformation of the laminate. Kirchhoff-Love shells give a faithful representation of the ply deformation behavior, and, unlike solids or traditional shear-deformable shells, do not suffer from transverse-shear locking in the limit of vanishing thickness. This, in combination with higher-order accurate and smooth representation of the shell midsurface displacement field, allows to adopt relatively coarse in-plane discretizations without sacrificing solution accuracy. Furthermore, the thin-shell formulation employed does not use rotational degrees of freedom, which gives additional efficiency benefits relative to more standard shell formulations.