Computational Modeling of Progressive Failure in FRP Composite Laminates Subjected to Static and Impact Transverse loading

摘要: In order to arrive at safe and reliable design of composite structures, understanding the mechanisms mechanics damage growth in these materials is paramount significance. Numerical models, if designed, implemented used carefully, can be helpful not only understand but also predict susceptibility a structure failure. this thesis, advanced finite elements numerical methods are explored develop an integrated, computationally efficient framework for analysis interacting laminated plates/shells subjected transverse quasi-static dynamic loading. A solid-like shell element obtain three-dimensional stress state fiber-reinforced composites. The further extended model mesh-independent matrix cracking by incorporating discontinuity mid-surface, director thickness stretching field using phantom node method. progressive failure developed which able simulate impact induced Care taken accurately describe interaction between cracks delamination crucial accurate predictions fracture phenomena laminate strength. Furthermore, time-dependent crack composites under loading conditions. proposed mass discretization schemes ensure performance implicit as well explicit elasto-fracture laminates. presented discusses computational modeling coupled thermo-mechanics presence cracks. unified adiabatic-isothermal propagating arbitrarily through mesh.