New Method for Failure Assessment of Cracked Pipeline

摘要：

This paper provides a new failure assessment curve of pipeline containing crack. The new failure assessment curve, which is based on the J integral calculation method of the effective remote stress, is as simple as the R6 option 2. The result of the new failure assessment curve is as accurate as the result of the curve based on strict J integral. Moreover, the new failure assessment curve could be used for any stress-strain relationship material, including Ramborg-Osgood(R-O) material and non-R-O materials under monotonic increasing loading, such as long plastic yield plateau steel. The new failure assessment curve is applied to a case that came from the three pipes burst in a proof test of an oil pipeline. Comparison with the result in the proof test shows the result of the new failure curve presented in this paper is accurate.

关键词： pipeline crack failure assessment diagram failure assessment curve the effective remote stress.

作者: BAI Yongqiang WANG Tong LU Lianghai SUN Liang SHUAI Jian

作者单位: Work Safety Technology Research Center, Beijing Municipal Institute of Labor Protection, Beijing 100 Department of Research, China Special Equipment Inspection and Research Center, Beijing 100013, Chin Department of Mechanical and Electronic Engineering, China University of Petroleum, Beijing 102249,

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1827-1831

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）