作者：张方举, 何鹏, 胡文军, 谢若泽

作者单位：中国工程物理研究院总体工程研究所, 四川 绵阳 621900

关键词：低阻抗SHPB; 衰减; 弥散; 应力波; 软材料

摘要：

介绍了一种以聚碳酸酯(PC)材料为波导杆的低阻抗SHPB系统,采用波传播系数实验方法分析PC杆中的波传播过程,得到了PC杆中与波衰减和弥散相关的波传播系数,并利用所测衰减指数和相速度预测了波形,预测波形与实测波形符合较好。应用低阻抗SHPB,获得了泡沫和橡胶两类典型低阻抗材料的动态力学性能。

Application and experimental technique of low impedance SHPB for soft materials

ZHANG Fang-ju, HE Peng, HU Wen-jun, XIE Ruo-ze

Institute of System Engineering, China Academy of Engineering Physics, Mianyang 621900, China

Abstract: The low impedance SHPB of polycarbonate(PC) bars technique was introduced, the wave propagation in the PC bars was analyzed with the method of wave propagation coefficient, and the wave propagation coefficients according to wave attenuation and dispersion were given. The waveform was predicted with the obtained attenuation exponent and phase speeds, which was accorded with the measured wave. With the low impedance SHPB technique, the dynamic stress-strain curves of two kinds of soft materials, foams and rubbers, were obtained.

Keywords: low impedance SHPB; attenuation; dispersion; stress wave; soft material

2012, 38(2): 17-20,55  收稿日期: 2011-10-15;收到修改稿日期: 2011-12-4

基金项目: 

作者简介: 张方举(1970-),男,研究员,主要从事冲击动力学实验及测试技术方面的研究工作。

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