Joint fatigue life calculation method considering laser lap welding under residual stress condition

The embodiment of the invention provides a joint fatigue life calculation method considering laser lap welding under a residual stress condition, and the method comprises the steps: obtaining a welding residual stress distribution curve of a joint according to a welding residual stress simulation mo...

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Bibliographic Details
Main Authors HAN XIAOHUI, ZHAO RUIRONG, FANG XIFENG, ZHENG KAI, LIU YONG
Format Patent
LanguageChinese
English
Published 27.12.2019
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:The embodiment of the invention provides a joint fatigue life calculation method considering laser lap welding under a residual stress condition, and the method comprises the steps: obtaining a welding residual stress distribution curve of a joint according to a welding residual stress simulation model of the laser lap welding after the joint is welded; adding the welding residual stress distribution curve of the joint into a fatigue life calculation model to obtain an adjusted fatigue life calculation model; according to the fatigue load range of the joint, the load stress ratio of the jointand the adjusted fatigue life calculation model, obtaining a tensile shear displacement curve of the joint under the condition of residual stress; and obtaining the fatigue life of the joint under theresidual stress condition according to the tensile shear displacement curve of the joint under the residual stress condition. According to the embodiment of the invention, the defect that the fatiguetest cannot consider the s
Bibliography:Application Number: CN201910774610