| PC/ABS高分子合金材料的热黏塑性内时本构模型 |
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| 引用本文： | 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,2011,45(10):1465-1468. |
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| 作者姓名： | 鲁佳宝 赵社戌 |
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| 作者单位： | （上海交通大学 船舶海洋与建筑工程学院，上海 200240） |
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| 基金项目： | 国家自然科学基金资助项目(50978162) |
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| 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.
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| 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 |
| 收稿时间： | 2010-09-08 |
A Thermal-Viscoplastic Endochronic Constitutive Model for PC/ABS Alloys |
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| 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. |
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| Authors: | LU Jia-bao ZHAO She-xu |
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| Institution: | (School of Naval Architecture, Ocean and Civil Engineering，Shanghai Jiaotong University， Shanghai 200240, China) |
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| 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. |
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| Keywords: | PC/ABS alloys internal time variable thermal-viscoplastic constitutive model |
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