Energy dissipation due to various failure modes in axial compression of unidirectional PMC tubes
- Wayne State Univ., Detroit, MI (United States)
Composite materials exhibit high energy absorption compared to conventional materials because of the progressive nature of the damage process. Progressive crushing in a polymer matrix composite (PMC) tube is a complex process involving different failure modes and delamination is one of the dominant damage mode. Computational simulation of the progressive crushing process is performed to understand the role of delamination in progressive crushing. The energy contribution of the delamination mode of failure in the overall energy absorption is predicted. A six ply unidirectional graphite/polyester composite tube is considered for this study. Quasi-static finite element analysis is performed in the non-linear FE code, ABAQUS, by simulating the dominant failure modes. The critical stress criterion is used to propagate the central delamination crack. The critical stress is determined by virtual crack extension method (VCEM). The energy absorption due to friction is also predicted. The prediction of the overall load-deflection response and energy absorption with this model correlates well with the experimental data.
- OSTI ID:
- 577556
- Report Number(s):
- CONF-970431-; TRN: 98:000974-0003
- Resource Relation:
- Conference: United new generation vehicle conference and exposition, Detroit, MI (United States), 7-10 Apr 1997; Other Information: PBD: 1997; Related Information: Is Part Of Advanced composites - proceedings; PB: 639 p.
- Country of Publication:
- United States
- Language:
- English
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