Finite Element Analysis of Composite Laminates

Finite Element Analysis of Composite Laminates

The first chapter presents an overview of the text. Chapter 2 is devoted to the introduction of the definitions and terminology used in composite materials and structures.

Author: O.O. Ochoa

Publisher: Springer Science & Business Media

ISBN: 9789401579957

Category: Science

Page: 213

View: 753

Composite materials are increasingly used in aerospace, underwater, and automotive structures. To take advantage of the full potential of composite materials, structural analysts and designers must have accurate mathematical models and design methods at their disposal. The objective of this monograph is to present the laminated plate theories and their finite element models to study the deformation, strength and failure of composite structures. Emphasis is placed on engineering aspects, such as the analytical descriptions, effective analysis tools, modeling of physical features, and evaluation of approaches used to formulate and predict the response of composite structures. The first chapter presents an overview of the text. Chapter 2 is devoted to the introduction of the definitions and terminology used in composite materials and structures. Anisotropic constitutive relations and Iaminate plate theories are also reviewed. Finite element models of laminated composite plates are presented in Chapter 3. Numerical evaluation of element coefficient matrices, post-computation of strains and stresses, and sample examples of laminated plates in bending and vibration are discussed. Chapter 4 introduces damage and failure criteria in composite laminates. Finally, Chapter 5 is dedicated to case studies involving various aspects and types of composite structures. Joints, cutouts, woven composites, environmental effects, postbuckling response and failure of composite laminates are discussed by considering specific examples.
Categories: Science

Practical Analysis of Composite Laminates

Practical Analysis of Composite Laminates

This comprehensive text can be used for a graduate course in mechanical engineering, and as a valuable reference for professionals in the field.

Author: J. N. Reddy

Publisher: CRC Press

ISBN: 9781351423045

Category: Technology & Engineering

Page: 336

View: 655

Composite materials are increasingly used in aerospace, underwater, and automotive structures. They provide unique advantages over their metallic counterparts, but also create complex challenges to analysts and designers. Practical Analysis of Composite Laminates presents a summary of the equations governing composite laminates and provides practical methods for analyzing most common types of composite structural elements. Experimental results for several types of structures are included, and theoretical and experimental correlations are discussed. The last chapter is devoted to practical analysis using Designing Advanced Composites (DAC), a PC-based software on the subject. This comprehensive text can be used for a graduate course in mechanical engineering, and as a valuable reference for professionals in the field.
Categories: Technology & Engineering

Hybrid Finite Element Method for Stress Analysis of Laminated Composites

Hybrid Finite Element Method for Stress Analysis of Laminated Composites

This book has one single purpose: to present the development of the partial hybrid finite element method for the stress analysis of laminated composite structures.

Author: Suong Van Hoa

Publisher: Springer Science & Business Media

ISBN: 9781461557333

Category: Technology & Engineering

Page: 298

View: 603

This book has one single purpose: to present the development of the partial hybrid finite element method for the stress analysis of laminated composite structures. The reason for this presentation is because the authors believe that partial hybrid finite element method is more efficient that the displacement based finite element method for the stress analysis oflaminated composites. In fact, the examples in chapter 5 of this book show that the partial hybrid finite element method is about 5 times more efficient than the displacement based finite element method. Since there is a great need for accurate and efficient calculation of interlaminar stresses for the design using composites, the partial hybrid finite method does provide one possible solution. Hybrid finite method has been in existence since 1964 and a significant amount of work has been done on the topic. However, the authors are not aware of any systematic piece of literature that gives a detailed presentation of the method. Chapters of the displacement finite element method and the evolution 1 and 2 present a sununary of the hybrid finite element method. Hopefully, these two chapters can provide the readers with an appreciation for the difference between the displacement finite element method and the hybrid finite element. It also should prepare the readers for the introduction of partial hybrid finite element method presented in chapter 3.
Categories: Technology & Engineering

Finite Element Analysis of Composite Laminates

Finite Element Analysis of Composite Laminates

This is of the fundamental importance to develop tools that allow the designer to obtain the optimized design considering the structural requirements, functional characteristics and restrictions imposed by the production process.

Author: Satish Kumar Mishra

Publisher: LAP Lambert Academic Publishing

ISBN: 3846582247

Category:

Page: 68

View: 285

The composite materials are well known by their excellent combination of high structural stiffness and low weight. This is of the fundamental importance to develop tools that allow the designer to obtain the optimized design considering the structural requirements, functional characteristics and restrictions imposed by the production process. In this work, taking into considerations the above limitations the dynamic behavior of beams and plate manufactured from fiber reinforced composite materials are considered. Modal analysis is carried out with the help of commercial finite element code ANSYS to determine the influence of fiber orientation as well as the stacking sequence on the natural frequencies and maximum central deflection in case of uniform loading over the plate. The behavior of laminated composite plate under pressure loading was studied by using ANSYS . The effect of fiber orientation, number of plies, and stiffness ratio on the displacement of symmetric and anti symmetric laminated composite plates subjected to uniform pressure loads are studied in this work.
Categories:

Analysis of Composite Laminates

Analysis of Composite Laminates

[9] J. Dolbow, An extended finite element method with discontinuous enrichment for applied mechanics, Master's thesis, Northwestern University, 1999. [10] D. Li, Extended layerwise method of laminated composite shells, ...

Author: Dinghe Li

Publisher: Elsevier

ISBN: 9780323914420

Category: Technology & Engineering

Page: 542

View: 122

Composite Laminated: Theories and Their Applications presents the latest methods for analyzing composite laminates and their applications. The title introduces the most important analytical methods in use today, focusing on fracture, damage, multi-physics and sensitivity analysis. Alongside these methods, it presents original research carried out over two decades on laminated composite structures and gives detailed coverage of laminate theories, analytic solutions and finite element models. Specific chapters cover An introduction to composites, Elasticity, Shear, State space theory, Layerwise theories, The extended layerwise method, Fracture and damage mechanics, Multi-physical fracture problems, Analytical methods of stiffened sandwich structures, Progressive failure analysis, and more. This volume offers a comprehensive guide to the state-of-the-art in the analysis and applications of composite laminates, which play a critical role in all types of engineering, from aerospace to subsea structures, including in medical prosthetics, circuit boards and sports equipment. Presents a guide to the analysis and application of advanced composite materials Gives detailed exposition of plate/shell theories and their implementation in finite element code architecture Considers the robustness, effectiveness and applications aspects of laminated plate/shell methods Gives hands-on experience of code architecture, providing composite analysis software which can be plugged in to commercial applications Presents experimental research alongside methods, laminate theories, analytic solutions, and finite element models
Categories: Technology & Engineering

Finite Elements Analysis Procedures in Engineering

Finite Elements Analysis  Procedures in Engineering

Mechanics of composites ( 10.6 ) provides the methodology to predict the stiffness , strength , and durability of composite laminates . Finite elements specifically designed to model composite plates and shells should include ...

Author: H. Lakshmininarayana

Publisher: Universities Press

ISBN: 8173714762

Category: Engineering mathematics

Page: 263

View: 363

This textbook has emerged from three decades of experience gained by the author in education, research and practice. The basic concepts, mathematical models and computational algorithms supporting the Finite Element Method (FEM) are clearly and concisely developed.
Categories: Engineering mathematics

Three dimensional Elastoplastic Finite Element Analysis of Laminated Composites

Three dimensional Elastoplastic Finite Element Analysis of Laminated Composites

A three-dimensional elastoplastic analysis of generally orthotropic composite laminates is developed, together with a finite element computer code NCLAP (nonlinear Composite Laminate Analysis Program) for its implementation.

Author: Mohamed M. Monib

Publisher:

ISBN: OCLC:18609098

Category: Finite element method

Page: 111

View: 928

A three-dimensional elastoplastic analysis of generally orthotropic composite laminates is developed, together with a finite element computer code NCLAP (nonlinear Composite Laminate Analysis Program) for its implementation. The analysis is capable of handling any laminated composite subjected to triaxial mechanical and/or hygrothermal loading conditions. The laminates can consist of any number of orthotropic material piles, of any orientations. Elastoplastic material behavior is included by means of the tangent modulus method. The onset of plastic deformation is determined by a failure surface in three-dimensional space, and is likewise dependent on temperature and moisture. The three-dimensional finite element analysis is based on a displacement formulation employing linear isoparametric elements. Large aspect ratios, typical of laminae finite element representations, are handled by the use of reduced integration techniques. Material properties are input to NCLAP as coefficients of second order polynomials describing the elastoplastic response, and the dependence on temperature and moisture content. Incremental mechanical loadings can be applied as nodal forces and/or prescribed displacements. Hygrothermal loadings are applied as constant overall changes, or as spatial distributions, of temperature and moisture content. Computer Program NCLAP has been developed in modular form, which will permit it to be easily modified to accommodate future extensions of the analysis. (Author).
Categories: Finite element method