复合材料C型柱轴压失效分析的层合壳建模方法

doi:10.7527/S1000-6893.2018.22395

Abstract

Abstract: Due to designability, manufacturability and high load-carrying efficiency, the C-channels has been widely applied to the lower component of the cargo floor of large transport aircraft as a typical support structure. Focusing on the typical composite C-channels, the finite element analysis method for the failure under axial compressive load is developed combed to the C-channel axial compression test. First, parameter study focused on the stress-strain curve of the composite material model was conducted, identifying and analyzing the physical significance and the value of the parameters in Lavadèze model, Puck IFF matrix failure criterion and Yamada Sun fiber failure criterion. Second, the "stacked shell" model was established. The mechanical behavior under axial compressive load was simulated, and then compared with the test. The results show that the model can well simulate the progressive crushing process, and has good consistency with the test in terms of average crushing load and specific energy absorption.

Key words: C-channels, parametric study, stacked shell model, failure analysis, specific energy absorption

CLC Number:

XIE Jiang, SONG Shanshan, SONG Dongfang, FENG Zhenyu, MU Haolei, ZHANG Xuehan. Stacked shell modeling method for failure analysis of composite C-channels subject to axial compression[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2019, 40(2): 522395-522395.

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Stacked shell modeling method for failure analysis of composite C-channels subject to axial compression

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