The relationship between type Ⅱ plain dent damage degree and dent depth on varied internal pressure

摘要：

　　Dent is a common defect of oil and gas pipelines and the assessment on dented pipelines is carried out according to major international standards and specifications with dent depth as the evaluation criteria.However, such evaluation criteria based on depth does not take the impact of other parameters (for instance, the internal pressure of pipeline) on the evaluation result into consideration; as a result, many dented pipelines that meet the specifications still lose their efficacy.In allusion to II-type plain dent existing on the oil and gas pipelines, the influence rule of the internal pressure of pipeline changes on the damage degree of dented pipelines is obtained on the basis of Oyanes Ductile Fracture Criterion and by adopting the finite element numerical method.

关键词： dent depth internal pressure damage degree Oyane ductile fracture criterion

作者: Ying Wu Yu Mo Na Tang Congxin Shan

作者单位: School of Civil Engineering and Architecture, Southwest Petroleum University,Chengdu 610500, Sichuan Southwest Oil and Gas Field Natural Gas Research Institute, Chengdu 610500, Sichuan, China

会议类型: 国际会议

会议名称: the International Conference Vibroengineering-2014

会议地点: 贵阳

会议语种:英文

页码: 97-100

在线出版日期: 2014-11-07（万方平台首次上网日期，不代表论文的发表时间）