Study on Crack Closure Considering Welding Residual Stress Under Constant Amplitude Loading and Overloading

作     者：Ziya Peng Ping Yang Kang Hu Yueling Song 彭子牙;杨平;胡康;宋月林

作者机构：Departments of Naval ArchitectureOcean and Structural EngineeringSchool of TransportationWuhan University of TechnologyWuhanChina Key Laboratory of High Performance Ship Technology(Wuhan University of Technology)Ministry of EducationWuhan 430063China 

出 版 物：《Journal of Marine Science and Application》 (船舶与海洋工程学报（英文版）)

年 卷 期：2020年第19卷第2期

页      面：195-207页

核心收录：

学科分类：08[工学] 0824[工学-船舶与海洋工程] 082401[工学-船舶与海洋结构物设计制造] 

基　　金：supported by the National Natural Science Foundation of China (Grant No. 51779198) 

主　　题：Welding residual stress Crack closure Overloading Crack propagation Butt-welded plate 

摘      要：Welding residual stress in the engineering structure has a non-negligible influence on crack propagation,and crack closure is a significant factor affecting the crack *** on the elastoplastic finite element method and crack closure theory,we studied crack closure and residual compressive stress field of butt-welded plates under constant amplitude loading and overloading regarding the stress ratio,maximum load,overload ratio,and number of *** results show that the welding residual tensile stress can decrease the crack closure because of a decrease in the residual compressive stress in the wake zone,but the effect is gradually reduced with increased stress ratio or maximum *** the combined effect of welding residual tensile stress and overload can produce a stronger retardation effect on crack propagation.