超声冲击处理焊接接头缺口应力集中系数研究  

Study on Notch Stress Concentration Factor of Welded Joint by Ultrasonic Impact Treatment

作　　者：郭荣岩 汪洋 李涛 甘进[2] GUO Rong-yan;WANG Yang;LI Tao;GAN Jin(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;School of Naval Architecture,Ocean and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]武汉理工大学船海与能源动力工程学院,武汉430063

出　　处：《武汉理工大学学报》2024年第5期64-70,共7页Journal of Wuhan University of Technology

基　　金：国家自然科学基金(51908437);中央高校基本科研业务费专项资金资助项目(2020IVB009,2019IVA024).

摘　　要：基于ABAQUS有限元分析,将钢十字形焊接接头形状参数和超声冲击参数与缺口应力集中系数建立直接联系,分析不同参数组合下超声冲击处理效果以及冲击后缺口应力集中系数的变化,拟合得到焊接接头超声冲击处理后缺口半径ρ、凹槽深度h、缺口应力集中系数K_(t)的计算公式。结果表明,该公式拟合程度较好,可用于预测超声冲击处理后十字形钢焊接接头的缺口应力集中系数。Based on ABAQUS finite element analysis,a direct relationship between the shape parameters and ultrasonic impact parameters of the steel cruciform welded joint and the notch stress concentration factor was established.The effect of ultrasonic impact treatment under different parameter combinations and the influence of the notch stress concentration factor after impact were analyzed,and the calculation formulas for the notch radiusρ,notch depth h,and notch stress concentration factor Ktof the welded joint after ultrasonic impact treatment were fitted.The results show that the formula fits well and can be used to predict the notch stress concentration factor of cruciform welded joints after ultrasonic impact treatment.

关 键 词：有限元分析 十字形焊接接头 超声冲击处理 缺口应力集中系数 

分 类 号：TG457.11[金属学及工艺—焊接]