Mechanical Response of Composites

Themethodologyfordesigninghigh-performancecompositestructuresisstill evo- ing. The complexity of the response of composite materials and the dif?culties in predicting the composite material properties from the basic properties of the c- stituents result in the need for a well-planned and exhaustive test program. The recommended practice to mitigate the technological risks associated with advanced composite materials is to substantiate the performance and durability of the design in a sequence of steps known as the Building Block Approach. The Building Block Approach ensures that cost and performance objectives are met by testing greater numbers of smaller, less expensive specimens. In this way, technology risks are assessed early in the program. In addition, the knowledge acquired at a given level of structural complexity is built up before progressing to a level of increased complexity. Achieving substantiation of structural performance by testing alone can be p- hibitively expensive because of the number of specimens and components required to characterize all material systems, loading scenarios and boundary conditions. Building Block Approachprogramscan achieve signi?cant cost reductionsby se- ing a synergy between testing and analysis. The more the development relies on analysis, the less expensive it becomes. The use of advanced computational models for the prediction of the mechanical response of composite structures can replace some of the mechanical tests and can signi?cantly reduce the cost of designing with composites while providing to the engineers the information necessary to achieve an optimized design.

The use of advanced computational methods for the simulation of a broad range of physical processes in different types of advanced composite materials (unidirectional, woven and non-crimp fabrics, nanocomposites) The physical processes addressed include the manufacturing processes, the elastic and inelastic material response at several scales, and the structural collapse

Auteur
Joris J. C. Remmers forscht an der Universität Eindhoven, Niederlande, im Institut für Maschinenbau und vertritt in der Lehre die Festkörpermechanik und die Strömungsmechanik.

Texte du rabat

This book contains twelve selected papers presented at the ECCOMAS Thematic Conference Mechanical Response of Composites, and the papers presented by the three plenary speakers.

It describes recent advances in the field of analysis models for the mechanical response of advanced composite materials, ranging from the simulation of the manufacturing process to the inelastic response and collapse of the material. The analysis models are based on recent advances in computational mechanics such as multi-scale modeling, cohesive and partition of unity models.

Contenu
Computational Methods for Debonding in Composites.- Material and Failure Models for Textile Composites.- Practical Challenges in Formulating Virtual Tests for Structural Composites.- Analytical and Numerical Investigation of the Length of the Cohesive Zone in Delaminated Composite Materials.- Combining Elastic Brittle Damage with Plasticity to Model the Non-linear behavior of Fiber Reinforced Laminates.- Study of Delamination in Composites by Using the Serial/Parallel Mixing Theory and a Damage Formulation.- Interaction Between Intraply and Interply Failure in Laminates.- A Numerical Material Model for Predicting the High Velocity Impact Behaviour of Polymer Composites.- Progressive Damage Modeling of Composite Materials Under Both Tensile and Compressive Loading Regimes.- Elastoplastic Modeling of Multi-phase Metal Matrix Composite with Void Growth Using the Transformation Field Analysis and Governing Parameter Method.- Prediction of Mechanical Properties of Composite Materials by Asymptotic Expansion Homogenisation.- On Buckling Optimization of a Wind Turbine Blade.- Computation of Effective Stiffness Properties for Textile-Reinforced Composites Using X-FEM.- Development of Domain Superposition Technique for the Modelling of Woven Fabric Composites.- Numerical Simulation of Fiber Orientation and Resulting Thermo-Elastic Behavior in Reinforced Thermo-Plastics.