Abstract
Tapered FRP tubes have high energy absorption performance under axial compressive load. FRP will be useful for structural material of a shock absorber in the various industries. And in order to evaluate the behavior of this material, several experimental tests and numerical simulations using FEM are carried out recently. However, it is difficult to simulate properly the behavior of tapered FRP tubes, so called "Progressive Crushing" with FEM, because the fracture mechanism contains various kinds of fractures such as delamination, fiber fracture and so on. In this study, we proposed an enhanced constitutive model for the crush-worthiness FEM analysis of FRP tube. With this enhancement, more detailed behavior of crushing is reproduced through numerical test that is also reported in this paper.
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