Residual stress influence analysis and simulation method and system based on elastic modulus reduction

• Main Authors: SONG JUNXI, CAO YANG, ZOU QINGXUN, PENG KEHUI, WANG CHENG, WU XIN, PENG RUI
• Format: Patent
• Language: Chinese; English
• Published: 25.04.2023
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; PHYSICS

The invention discloses a residual stress influence analysis and simulation method and system based on elastic modulus reduction. The method comprises the following steps: carrying out thermal analysis to obtain temperature field distribution of a component and a change process of a temperature field in a welding process; the temperature field distribution of the component in the welding process and the change process of the temperature field serve as body loads of mechanical analysis and are applied to the component to obtain a welding residual stress field; forming a welding residual stress field of the integral structure based on the welding residual stress distribution of the typical component; based on the characteristics of welding residual stress distribution, the cross section of the selected typical component is divided into different sub-areas, and elastic modulus reduction distribution of the overall structure is obtained based on the different sub-areas; and adjusting the yield strength and the el