| 聚碳酸酯微孔塑料的拉伸力学性能及本构关系 |
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| 引用本文： | 卢子兴,张慧.聚碳酸酯微孔塑料的拉伸力学性能及本构关系[J].北京航空航天大学学报,2004,30(3):202-205. |
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| 作者姓名： | 卢子兴 张慧 |
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| 作者单位： | 北京航空航天大学 航空科学与工程学院, 北京 100083 |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金 |
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| 摘 要： | 微孔泡沫塑料是一种特殊的发泡材料,具有许多独特的力学性能.根据聚碳酸酯微孔泡沫塑料的拉伸实验数据,对材料的拉伸力学性能进行了研究,讨论了密度、应变率等因素对微孔泡沫塑料拉伸应力-应变关系的影响,并基于Boltzmann叠加原理利用松弛模量对拉伸应力-应变曲线进行了本构关系的拟合,得到了比较满意的结果.
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| 关 键 词： | 本构关系 应变率 微孔泡沫塑料 力学性能 |
| 文章编号： | 1001-5965(2004)03-0202-04 |
| 收稿时间： | 2002-11-22 |
| 修稿时间： | 2002年11月22日 |
Tensile mechanical properties and constitutive relation of microcellular polycarbonate |
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| Lu Zixing,Zhang Hui.Tensile mechanical properties and constitutive relation of microcellular polycarbonate[J].Journal of Beijing University of Aeronautics and Astronautics,2004,30(3):202-205. |
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| Authors: | Lu Zixing Zhang Hui |
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| Institution: | School of Aeronautics Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China |
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| Abstract: | Microcellular plastics is a kind of special foamed plastic with some unique mechanical properties. On the basis of tensile test data of microcellular polycarbonate, some mechanical properties are investigated in this paper, including the effects of density and strain rate on the tensile stress-strain curves. Finally, the numerical fits to tensile constitutive relation of microcellular polycarbonate are performed by means of Boltzmann's principle and relaxation modulus. A good agreement between theoretical prediction and experimental data is obtained. |
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| Keywords: | constitutive relation strain rate microcellular plastics mechanical properties |
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