PC/ABS高分子合金材料的热黏塑性内时本构模型

摘要/Abstract

摘要： 针对PC/ABS(聚碳酸酯/丙烯腈-丁二烯-苯乙烯)高分子合金材料在冲击压缩下所表现出的强非线性行为，包括温度相关性、率相关性及应变强化-软化-再强化的特性等，建立了一个考虑ABS增韧机理的内时变量的内时本构模型，由此对PC/ABS合金在20°C、70°C下，压缩冲击应变率分别为8.0×102 、2.7×103 、1.0×104 s-1 时的真应力-应变曲线进行了模拟，并与相关文献中的实验数据进行了比较.结果表明，文中所建热黏塑性内时本构模型能够较好地描述PC/ABS合金材料的冲击压缩响应.

关键词: , 聚碳酸酯/丙烯腈丁二烯苯乙烯合金, 内时变量, 热黏塑性本构模型

Abstract: Focusing on the temperaturedependence, the ratedependence and the strain hardening and/or softening behaviors of PC/ABS alloys under compression impact, this paper presented a rational internal time variable including the ABS toughening mechanism and developed a thermalviscoplastic endochronic constitutive model. The model is used to simulate the true stressstrain relationships of PC/ABS alloys at 20°C and 70°C and at strain rates of 8.0×102 ,2.7×103 ,1.0×104 s-1. The validity of the model was verified through comparing the simulations with the experimental data in the reference.

Key words: PC/ABS alloys, internal time variable, thermalviscoplastic constitutive model

中图分类号:

O 344.1

鲁佳宝, 赵社戌. PC/ABS高分子合金材料的热黏塑性内时本构模型[J]. 上海交通大学学报（自然版）, 2011, 45(10): 1465-1468.

LU Jia-Bao, ZHAO She-Xu. A Thermal-Viscoplastic Endochronic Constitutive Model for PC/ABS Alloys[J]. Journal of Shanghai Jiaotong University, 2011, 45(10): 1465-1468.

参考文献

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