焊接接头残余应力形成、分布及消减方法研究

Key Points

• The study aims to understand how residual stresses form in welded joints and the methods to reduce them.
• Analyzed the thermo-mechanical behavior of materials during welding.
• Conducted finite element simulations and experimental tests to explore stress distribution.
• Explained principles and applications of reduction techniques like mechanical treatment, heat treatment, and ultrasonic impact.
• Developed a multidimensional evaluation system for assessing the effectiveness of reduction methods.
• Identified key factors that contribute to the formation of residual stresses in welded joints.
• Demonstrated varying stress distribution patterns under different welding processes and materials.
• Validated the effectiveness of reduction techniques through case studies in aerospace and shipbuilding industries.