| 关于管道环向穿透裂纹的应力强度因子 |
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| 引用本文： | 陈宝忠,谢禹钧,孔令超.关于管道环向穿透裂纹的应力强度因子[J].辽宁石油化工大学学报,1998(2). |
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| 作者姓名： | 陈宝忠 谢禹钧 孔令超 |
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| 作者单位： | 抚顺石油学院机械系 |
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| 摘 要： | 由守恒积分给出的裂纹尖端近场以应力强度因子表示的积分值，并利用Ｊｋ积分概念及管道膜应力的初等分析，提出了计算裂纹管应力强度因子的一个方法。给出了适用于各种载荷的Ⅰ型管道环向穿透裂纹的应力强度因子表达式，以及拉伸环向周期裂纹管应力强度因子的计算公式，从而建立了一个简单而有效的求解方法。
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| 关 键 词： | 应力强度因子 断裂力学 管道 |
Stress Intensity Factors for Circumferential Cracked Pipes |
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| Abstract: | Based on the integral value of conservation law in the field near to crack tip and the physical meaning of Jk integral and elementary membrane stress analysis for cracked pipes. A method of calculating stress factor is proposed. Some formulae of type I stress intensity factors suitable to varous kinds of loads for circumferential cracked pipes and periodic cracked pipe are also guen. Then a simple and effective method is established. |
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| Keywords: | Stress intensity factors Fracture mechanics Pipe |
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