Abstract：Dynamic compressive constitutive model of steel/polyurethane sandwich structure with different thickness ratio under high strain rate is proposed based on the split Hopkinson pressure bar (SHPB) experimental tests. As the experimental results show, steel/polyurethane sandwich structure is very sensitive to strain rate. The yield strength of steel/polyurethane sandwich structure is increased as the strain rates are raised and the growth rate is greater than the increase speed of strain rate. Based on Johnson-Cook constitutive model, dynamic constitutive model for steel/polyurethane sandwich structure with different thickness ratio was proposed. The parameters in constitutive model are determined by analysis of experimental tests. It can be conclude that the dynamic compressive constitutive model presented in this paper is effective and accurate to descript the stress-strain curve of steel/polyurethane sandwich structure.
沈超明 叶仁传 田阿利. 钢/聚氨酯夹层结构动态压缩力学性能与本构模型研究[J]. 振动与冲击, 2016, 35(10): 115-119.
SHEN Chao-ming YE Ren-chuan TIAN A-li. Experimental Study on Dynamic Compressive Mechanical Properties and Constitutive Model of Steel/polyurethane Sandwich structure. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(10): 115-119.
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