The Role of Individual Failure Mechanisms on Crush Energy Absorption in a Composite Tube

A Design of Experiments (DOE) study was performed to estimate the contribution of various energy-absorbing mechanisms to the total energy absorbed during quasi‐static crush of circular composite tubes. Failure mechanisms such as material failure, delamination, friction between plies and friction between a metallic initiator and the tube were explicitly represented in an axisymmetric finite element model. The results of this study not only provide a better understanding of tube crush behavior, but also guide the development of better models for design of composite crush tubes. 
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