| 冲击载荷下高聚物动态本构关系对粘弹性波传播特性的影响 |
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| 引用本文： | 王礼立.冲击载荷下高聚物动态本构关系对粘弹性波传播特性的影响[J].宁波大学学报(理工版),1995(3). |
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| 作者姓名： | 王礼立 |
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| 作者单位： | 宁波大学材料科学和力学研究中心 |
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| 摘 要： | 从广泛适用于工程塑料的ＺＷＴ非线性粘弹性本构方程出发，研究了冲击载荷下粘弹性波传播特性与本构特性间的相互依赖和影响。以有机玻璃、聚碳酸酯和环氧树脂为实例，通过数值模拟，对粘弹性波的传播特性作了分析比较。建议了一个在准静态试验基础上，通过测量粘弹性波两个主要传播特性参数（特征波速和衰减因子）来确定高聚物高应变率下动态本构方程的方法。理论预示和实验结果相符。
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| 关 键 词： | 高聚物，冲击载荷，粘弹性波，粘弹性本构关系 |
THE INFLUENCE OF DYNAMIC CONSTITUTIVE RELATIONS OF POLYMERS AT IMPACT LOADING ON THE VISCOELASTIC WAVE PROPAGATION CHARACTER |
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| Wang Lilil, G.Puvinage, K. Labibes.THE INFLUENCE OF DYNAMIC CONSTITUTIVE RELATIONS OF POLYMERS AT IMPACT LOADING ON THE VISCOELASTIC WAVE PROPAGATION CHARACTER[J].Journal of Ningbo University(Natural Science and Engineering Edition),1995(3). |
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| Authors: | Wang Lilil GPuvinage K Labibes |
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| Abstract: | Starting from the Zhu- Wang-Tang (ZWT) nonlinear viscoelastic constitutive equation for engineering plastics, the interdependence between the basic characters of viscoelastic waves and the constitutive responese is studied. Computational simulations of viscoelastic waves propagating in PMMA,PC and epoxy bars are presented and compared each other, showing the influence of material parameters on the characters of viscoelastic waves. In addition to the quasi-static tests, a wave propagation method is suggested for determining the dynamic wiscoelastic constitutive equation for polymers at high strain-rates, by measuring the characteristics wave velocity and the attenuation factor of vicoelastic waves. The theoretical predictions are in good agreement with the experimental measurements. |
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| Keywords: | viscoelastic waves viscoelastic constitutive relation impact loading polymers |
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