| 受弯复合材料梁损伤演变的理论模型与实验 |
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| 引用本文： | 彭立华,沈为,钱苇.受弯复合材料梁损伤演变的理论模型与实验[J].华中科技大学学报(自然科学版),1996(5). |
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| 作者姓名： | 彭立华 沈为 钱苇 |
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| 作者单位： | 北京机床研究所，华中理工大学力学系 |
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| 摘 要： | 基于连续介质损伤力学理论，研究了受弯复合材料梁的损伤演变问题．提出了考虑拉压响应的弹脆性损伤演变的理论模型与本构方程．在方程推导中，假设材料及其损伤都是正交异性的，且材料主轴与损伤主轴一致．
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| 关 键 词： | 弹脆性损伤 损伤演变 损伤场 连续性 |
A Theoretical Model and Experimental Study of Damage Evolution for a Composite Beam Subjected to Bending |
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| Pang Lihua, Shen Wei, Qian Wei.A Theoretical Model and Experimental Study of Damage Evolution for a Composite Beam Subjected to Bending[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1996(5). |
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| Authors: | Pang Lihua Shen Wei Qian Wei |
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| Abstract: | The damage evolution of a composite beam subjected to bending is studied based on the theory of continuum damage mechanics. The theoretical model and the constitutive equation with the response of both tension and compression for elastic brittle damage evolution taken into account are derived. It is assumed that both the material and the damage are orthotropic and that the principal axes of the material coincide with those of damage. Therefore, the model presented may possibly be widely applicable. The material parameters needed for numerical calculation have been obtained by experiment. |
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| Keywords: | elastic brittle damage damage evolution damage field continuity |
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