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| 压力管道焊缝噘嘴和错边应力分析 | |
| 引用本文： | 梁瑞,李淑欣,俞树荣,邢静忠,周方勤,罗文华.压力管道焊缝噘嘴和错边应力分析[J].兰州理工大学学报,2003,29(2):65-67. |
| 作者姓名： | 梁瑞 李淑欣 俞树荣 邢静忠 周方勤 罗文华 |
| 作者单位： | 1. 甘肃工业大学,石油化工学院,甘肃,兰州,730050 2. 甘肃工业大学,理学院,甘肃,兰州,730050 3. 中国石油西南油气田分公司,四川,成都,610213 |
| 基金项目： | 甘肃省自然科学基金(ZS021 A25 016 G) |
| 摘 要： | 利用有限元软件计算焊缝错边和螺旋焊缝噘嘴引起的弯曲应力,验证API579与BS7910标准中给出的焊缝噘嘴和错边应力计算公式.计算出噘嘴和错边弯曲应力随压力、螺旋角、噘嘴角或错边量的变化,并推荐在采用失效评定图(FAD图)对管道缺陷评定时所用的噘嘴和错边弯曲应力计算公式进行评定. |
| 关 键 词： | 压力管道 弯曲应力 焊缝 噘嘴 错边 |
| 文章编号： | 1000-5889(2003)02-0065-03 |
| 修稿时间： | 2002年10月17 |
Analysis of stress in pressure pipes caused by angular misalignment and axial misalignment of weld |
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| Abstract: | The bending stress in pressure pipes caused by both the angular and axial misalignment is calculated with the software ANSYS to test the formulas of bending stress evaluation presented in Standard API579 and BS7910. The variations of bending stress with pressure, spiral angle, angle of angular misalignment and amount of axial misalignment are evaluated. The failure assessment diagram (FAD) is recommended to assess the formula of calculating bending stress in pressure pipes coursed by angular misalignment and axial misalignment when the pipe flaws are assessed. |
| Keywords: | pressure pipes bending stress weld angular misalignment axial misalignment |
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