Numerical study on the impact absorption behavior of compound tubes

Numerical model simulates the large deformation and stain process of composite material. The numerical model is proposed with several failure criteria of composite material and non-linearity finite element theory. Axial crushing energy dissipation behavior of compound tubes (metal tube winded by glass/epoxy) is simulated and investigated. Factors that affect the energy absorption capability of compound tubes are studied from the views of metal property, composite thickness and winding angle. The calculating results correspond to the experimental results, which assure the validity of this numerical model. This result can give a valuable reference to design of the impact absorption energy component.