| 一种新的弹塑性损伤变量及其应用 |
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| 引用本文： | 沈为,邓泽贤,彭立华,李长春. 一种新的弹塑性损伤变量及其应用[J]. 华中科技大学学报(自然科学版), 1999, 0(9) |
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| 作者姓名： | 沈为 邓泽贤 彭立华 李长春 |
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| 作者单位： | 华中理工大学力学系(沈为，彭立华，李长春)，香港理工大学制造工程系(邓泽贤) |
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| 摘 要： | 提出塑性损伤变量的定义，它由反映微空隙群的材料相对体积膨胀来表征．从理论上导出了塑性损伤变量Ｄｐ 与经典连续损伤力学中弹性损伤变量Ｄｅ＝ １－ Ｅ／Ｅ 之间的关系．根据此关系，用实验方法确定了聚合物材料ＨＩＰＳ在纵向拉伸过程中损伤变量的扩展
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| 关 键 词： | 塑性损伤变量 弹性损伤变量 空隙群损伤 |
A New Elasto Plastic Damage Variable and Its Application |
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| Shen Wei Tang C Y Peng Lihua Li Changchun. A New Elasto Plastic Damage Variable and Its Application[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1999, 0(9) |
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| Authors: | Shen Wei Tang C Y Peng Lihua Li Changchun |
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| Affiliation: | Shen Wei Tang C Y Peng Lihua Li Changchun |
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| Abstract: | A new plastic damage variable is proposed, which is characterized by relative volume expansion reflecting micro voids in material. The relationship between the plastic damage variable D p and the elastic damage one D e= 1-/E , by classical Continuum Damage Mechanics, is derived. The basis of this relation, the propagation of damage variable in longitudinal tensile process for polymer material HIPS is determined using experimental technique. |
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| Keywords: | plastic damage variable elastic damage variable voids damageShen Wei Prof. Dept. of Mechanics HUST Wuhan 430074 China. |
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