INFLUENCE OF STRUCTURAL DEFECTS ON THE BENEFICIARY EFFECT OF AUTOFRETTAGE

摘要：

A comprehensive numerical study has been carried out to explore the influence of part through cracks of various size and orientation in a thick welded ferritic steel cylindrical vessel, on the beneficiary effect of autofrettage loading (AF). The results suggest that in presence of cracks, the localised near crack tip residual stress fields interact with in service stresses and influence the enhancement in load carrying capacity of autofrettaged vessel. Furthermore it is concluded that depending on the crack/loading configuration the influence varies from noticeable in some cases to marginal in others to negligible for cases where the crack tip is not significantly disturbed by the service loads.

作者: S. Hadidi-Moud H. Makari

作者单位: Mechanical Engineering Department, Ferdowsi University, Mashhad, Iran;Solid Mechanics Research Group Mechanical Engineering Department, Ferdowsi University, Mashhad, Iran

会议类型: 国际会议

会议名称: 第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)

会议地点: 北京

会议语种:英文

在线出版日期: 2007-10-15（万方平台首次上网日期，不代表论文的发表时间）