| 含裂纹管道的失效评定曲线的实例验证 |
| |
| 引用本文： | 帅健,许葵.含裂纹管道的失效评定曲线的实例验证[J].机械强度,2003,25(3):251-253. |
| |
| 作者姓名： | 帅健 许葵 |
| |
| 作者单位： | 石油大学(北京)机电学院,北京,102249 |
| |
| 基金项目： | 中油集团公司创新基金资助项目 (CX98 2 7)~~ |
| |
| 摘 要： | 验证含裂纹油气管道的失效评定曲线，实例来源于某输油管线现场水压试验中爆裂的三个管段。给出基于J积分理论的含裂纹管道的失效评定曲线的基本方程，并采用有限元方法计算裂纹管道的J积分。对三个破坏的含裂纹管段，根据现场测量的裂纹尺寸和管材的力学性能试验数据，建立失效评定曲线，并与水压实验结果作比较，表明所建立的失效评定曲线的准确性。
|
| 关 键 词： | J积分 有限元 轴向裂纹 失效评定曲线 安全评定 油气管道 |
| 修稿时间： | 2002年2月28日 |
VALIDATION OF FAILURE ASSESSMENT CURVE OF LINEPIPE CONTAINING CRACKS |
| |
| SHUAI Jian,XU Kui.VALIDATION OF FAILURE ASSESSMENT CURVE OF LINEPIPE CONTAINING CRACKS[J].Journal of Mechanical Strength,2003,25(3):251-253. |
| |
| Authors: | SHUAI Jian XU Kui |
| |
| Affiliation: | SHUAI Jian XU Kui |
| |
| Abstract: | The failure assessment curves of linepipe containing cracks are verified by a case that came from the three pipes burst in a proof test of an oil pipeline. The basic equation of failure assessment curve for a semi elliptical flaw in a pipe surface is described. J integral and its elastic component obtained by line spring element method. For the three pipes the failure assessment curves are set up according to the size of a flaw and the data of material mechanical test. Comparison with the result in the proof test shows the failure assessment curves presented in this paper is accurate. |
| |
| Keywords: | J integral Finite element method Crack Failure assessment curve Safety assessment Pipelines |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
