| 反平面扩展裂纹的J积分与COD |
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| 引用本文： | 陈俊英,程靳.反平面扩展裂纹的J积分与COD[J].固体力学学报,1998,19(1):69-72. |
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| 作者姓名： | 陈俊英 程靳 |
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| 作者单位： | 哈尔滨工业大学航天工程与力学系!哈尔滨，150001 |
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| 摘 要： | 给出一个以任意速率扩展的反平面裂纹与路径无关的Ｊ积分，证明Ｊ积分扩展裂纹尖端的张开位移（动态ＣＯＤ）之间有的简单的关系，Ｊ积分与能量释放率，动应力强度因子之间也有简单关系，利用这些关系，给出了动态ＣＯＤ与动应力强度因子之间的关系式。
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| 关 键 词： | 弹性动力学 断裂力学 断裂动力学 J积分 COD |
J~* INTEGRAL AND COD OF PROPAGATING CRACK IN ANTI-PLANE |
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| Chen Junying,Cheng Jin,Wang Gang.J~* INTEGRAL AND COD OF PROPAGATING CRACK IN ANTI-PLANE[J].Acta Mechnica Solida Sinica,1998,19(1):69-72. |
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| Authors: | Chen Junying Cheng Jin Wang Gang |
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| Abstract: | A path-independent J integral for crack extension at nonuniform rates in anti-plane is given. It also proves that there is a simple relation between the J integral and dynamic crack tip opening displacement. There also exit simple relations between the J integral and energy release rate and dynamic stress Intensity factor. By using these relations, we give the relation between dynamic COD and dynamic stress intensity factor. |
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| Keywords: | elastodynamic mechanics of fracture dynanmic of fracture |
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