| 考虑应力松驰复合型裂纹顶端塑性区分析 |
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| 引用本文： | 田常海,王德俊.考虑应力松驰复合型裂纹顶端塑性区分析[J].应用力学学报,1996,13(4):141-145. |
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| 作者姓名： | 田常海 王德俊 |
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| 作者单位： | 鞍钢钢铁研究所(田常海)，东北大学机械工程学院(王德俊) |
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| 摘 要： | Ｓｈｉｈ［１］应用奇异单元，获得了不考虑应力松驰小范围屈服条件下复合型裂纹尖端塑性区形状。Ｚ．Ｚ．Ｚｕ等［２］采用Ｒｉｃｅ［５］给出的裂纹尖端应力关系式，利用有限元分析获得了不考虑应力松驰下复合型裂纹尖端塑性区，本文基于静力学中内力与外力平衡条件，用线弹性的全场解代替局部解，给出了考虑应力松驰下复合型裂纹尖端塑性区边界方程，获得了考虑应力松驰下的任意方向的塑性区尺寸及塑性区形状
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| 关 键 词： | 复合型裂纹 塑性区 应力松驰 |
Under Considering Stress Relaxation Analysis of the Plastic Zone at the Crack Tip for Mixed Crack |
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| Tian Changhai,Wang Dejun.Under Considering Stress Relaxation Analysis of the Plastic Zone at the Crack Tip for Mixed Crack[J].Chinese Journal of Applied Mechanics,1996,13(4):141-145. |
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| Authors: | Tian Changhai Wang Dejun |
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| Institution: | Tian Changhai Wang Dejun (Institute of Iron and Steel Research. An Shan Iron and Steel Complex. Liao Ning) (Northeast University. Shen Yang) |
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| Abstract: | Using strange element, Shih obtained plastic zone shape at the crack tip for mixed mode crack. Using relation at crack tip stress by RICE and making use of finite element analysis, Z,Z,Zu et got plastic zone at the crack tip for mixed mode crack under unconsidered stress relaxation. Based on equilibrium condition of internal force and external force in statics, using liner elastic solution of all field instead of local solution, we on this paper give along arbitrary angle equation of plastic zone edge for mixed mode crack at the crack tip and obtain size and shape of the plastic zone for mixed mode crack under considering stress relaxation. |
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| Keywords: | mixed mode crack plastic zone stress relaxation |
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