摘要
为研究钢/尼龙夹层板的适用性,对夹层板的动态压缩力学性能进行仿真和试验研究。利用有限元软件LSDYNA对霍普金森压杆(SHPB)实验进行数值模拟,结果表明钢/尼龙夹层板是一种应变率敏感性材料。基于朱王唐(ZWT)非线性粘弹性模型拟合得到不同厚度比的钢/尼龙夹层板的动态压缩本构方程。经实验验证,本构方程具有较高精度,可以用于对该类夹层板动态压缩力学性能的预测,同时也证明该文的SHPB实验的数值模拟方法正确性。
The dynamic compression mechanical properties of steel/nylon sandwich plate have been investigated by simulation and experiments studies to expand the use of these structures. Finite element software LS-DYNA was used to simulate the experiment of Split Hopkinson Pressure Bar （SHPB）, it turns out the steel/nylon sandwich plate is of strain rate sensitivity. ZWT nonlinear viscoelastic model was used to fit the dynamic compressing constitutive equation of various sandwich plates, which has different thickness ratio. Comparing the experimental data, we find the equation has a high accuracy, it can predict the dynamic compression mechanical properties of steel/nylon sandwich plates and prove the accuracy of numerical simulation method in SHPB experiments.
作者
蔡玄龙
沈超明
卢卫彬
CAI Xuanlong SHEN Chaoming LU Weibin(School of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology, Zhenjiang 212003 ,China Yangfan Group Co.,Ltd.,Zhoushan 316000,China)
出处
《中国测试》
CAS
北大核心
2016年第10期143-148,共6页
China Measurement & Test
