Progressive failure modelling of woven carbon composite under impact

摘要: Abstract The design of composite structures or components, subject to extreme loading conditions, such as crash, blast, etc. requires a fundamental understanding the deterioration mechanism within meso-structure. Existing predictive techniques for analysis and components near beyond their ultimate strength are either based on simple scalar stress functions, use very complex damage formulations with many material constants, some which may be difficult characterise. This paper presents mechanics progressive failure model thin woven carbon composites under impact loading. approach is an unconventional thermodynamic maximum energy dissipation approach, entails controlling evolution hence per second, rather than damage. method has been implemented into explicit dynamic finite element code DYNA3D. Numerical simulation results using proposed compared two experimental tests. methodology in this reflects simple, but effective technique that can used wide range problems from events, crash birdstrike, when tearing perforation major mechanisms. As cumulative, allows initial or/and post-impact static loads applied structure component, thus allowing cradle-to-grave methodology.