[1]黄志荣,宗福开,尤一匡,等.碳钢管道J_R曲线测定与研究[J].常州大学学报(自然科学版),1995,(03):25-30.
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碳钢管道J_R曲线测定与研究
常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]
- 卷:
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- 期数:
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1995年03期
- 页码:
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25-30
- 栏目:
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- 出版日期:
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1900-01-01
文章信息/Info
- Title:
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Measurement And Experimental Investigation Of The J_R Curve Of Carbon Steel Piping
- 作者:
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黄志荣; 宗福开; 尤一匡; 李培宁; 徐宏
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江苏石油化工学院；华东理工大学
- 关键词:
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J_R曲线 碳钢管道 阻力曲线 加载点 裂纹扩展 初始裂纹 管道缺陷 柔度 压力容器 裂纹长度
- 分类号:
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TE973
- 摘要:
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在四点弯曲装置上，测定了２０号钢管道的ＪＲ阻力曲线，测试中发现，管道的柔度不仅与裂纹尺寸有关，而且还与荷载水平有关。试验表明，这是由于管道受载后，裂纹处管道截面变椭圆及由于管道弯曲变形导致加载过程中力臂的变化所引起。经理论分析计算扣除了这些因素的影响，修正了ＪＲ曲线。
- Abstract:
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JR resistance curve of the 20 steel piping in 103mm outer diameter with circumferential through--wall crack was measured on the four--point bending apparatus. It was found that the complianlce of pipe is not only related with the crack size but also with the loading level. It is mainly caused by the ovalization of the cracked cross section and the changing of the lever-arm while the pipe is deformed when being bended. The influence factor to the JR was deducted by theoretical analysis. and the JR curve was modified.
更新日期/Last Update:
1900-01-01