일방향 케블라/에폭시 복합재 튜브의 축방향 압괴 거동의 해석 및 시험적 연구

초록

In this paper, an analysis model for a kevlar/epoxy tube to be used as an energy absorbing component has been developed and then verified the results through experiment. The 2D shell element and Chang-Chang failure criterion of LS-DYNA that is commercial explicit FE code was used. Mechanical material properties for the model were obtained by material testing in advance. The numerical results were compared with quasi-static test results under axial compressive loading at 10mm/min. From the results, force-displacement curve was very close to the experiments and SEA showed a good agreement with experimental one within less than 5 percent.