Abstract:A progressive damage model based on 3D modified Hashin criterion was proposed to simulate the composite plates subjected to low-velocity impacts. Considering the dispersion of composite strength, degradation parameters related to the Weibull distribution of the composite strength was used in this model. Meanwhile, the degradation parameters arbitrarily chosen problem was avoided. Composite nonlinear shear behavior was considered in modified Hashin criterion. The shear terms in original criteria were replaced by a strain energy form, meanwhile the composite shear failure was predicted by maximum strain criterion. Therefore, the discontinuous deformation caused by stress criterion could be prevented. Low-velocity impacts of T300/3501 composite plates under different energies were simulated using this model. The impact response curves, intra- and inter-laminar damage obtained from numerical analyses were comparable with test results. It is shown the proposed model can effectively predict the low-velocity impact damage of composite plates.
刘万雷,常新龙,张晓军,胡宽,张有宏. 基于改进Hashin准则的复合材料低速冲击损伤研究[J]. 振动与冲击, 2016, 35(12): 209-214.
LIU Wanlei, CHANG Xinlong, ZHANG Xiaojun, HU Kuan, ZHANG Youhong. Low-velocity impact analysis of composite plates based on modified Hashin criterion. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(12): 209-214.
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