| 含轴向裂纹管道内压作用下的稳定性评定 |
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| 引用本文： | 张对红,张进国. 含轴向裂纹管道内压作用下的稳定性评定[J]. 油气储运, 1999, 18(7): 23-26 |
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| 作者姓名： | 张对红 张进国 |
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| 作者单位： | [1]石油大学（北京） [2]莱阳农学院 |
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| 摘 要： | 通过Ｊ积分的弹塑性解，计算了含轴向裂纹管道在内压作用下的撕裂模量，叙述了撕裂模量相对于Ｊ积分的裂纹扩展稳定性评定图的绘制方法，并结合实例，分析了受压管道轴向裂纹稳定扩展的载荷范围，预测了裂纹失稳扩展时的临界压力。
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| 关 键 词： | 轴向裂纹 计算 稳定性评价 输油管道 |
Stability Assessment of Pipeline with Axial Cracks Subjeted to Internal Pressure |
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| Zhang Duihong and Lv Yingmin. Stability Assessment of Pipeline with Axial Cracks Subjeted to Internal Pressure[J]. Oil & Gas Storage and Transportation, 1999, 18(7): 23-26 |
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| Authors: | Zhang Duihong and Lv Yingmin |
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| Affiliation: | Zhang Duihong and Lv Yingmin |
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| Abstract: | Stability assessment method for pipeline with axial cracks subjected to internal pressure is stated in this paper through calculating elastic-plastic J integral and tearing modulus. Meanwhile, critical pressure is anticipated in unstable crack propagation. |
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| Keywords: | J integral tearing modulus axial crack stability assessment |
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