Calculation of the stress intensity factors for elliptical cracks embedded in a weld under tensile loading Ⅱ: double cracks
作者单位：College of Mechanical and Electrical Engineering Beijing University of Chemical Technology Chizhou Special Equipment Inspection Center China Special Equipment Inspection and Research Center
会议名称：《2011 First International Conference on High Performance Structures and Materials Engineering (ICHPSM 2011)》
会议日期：2011年
学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）]
关 键 词：weld double embedded cracks stress intensity factor
摘 要：In this paper, double embedded elliptical cracks in a weld of pressure vessels under tension was taken into consideration, and stress intensity factors at the crack tip were calculated with the emphasis on the interaction between cracks. It is found that when the distance between the double embedded elliptical cracks is larger than the major semi-axis of the ellipse, influence between the cracks can be neglected. Unlike the single embedded crack, owing to the crack interactions, the point with maximum stress intensity factor is not always at the end of the minor axis of the ellipse, it may swift to the end of major axis, especially when the ellipse is close to a circle.