| 基于有限元的搭接接头应力集中系数分析 |
| |
| 引用本文： | 付雷,程荣龙,杨建国,王涛,方洪渊.基于有限元的搭接接头应力集中系数分析[J].焊接学报,2013,34(7):109-112. |
| |
| 作者姓名： | 付雷 程荣龙 杨建国 王涛 方洪渊 |
| |
| 作者单位： | 1. 哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨,150001
2. 哈尔滨工业大学先进焊接与连接国家重点实验室,哈尔滨150001;浙江工业大学化工机械设计研究所,杭州310014 |
| |
| 摘 要： | 针对双侧焊接的搭接接头进行有限元建模,计算不同搭接长度、焊缝宽度和焊趾过渡圆弧半径下焊根和焊趾处的应力集中系数,回归分析建立应力集中系数与各几何参数的关系方程.结果表明,搭接长度对应力集中系数的影响最显著,随着搭接长度增大,焊根和焊趾处应力集中系数都增大；随着焊缝宽度增大,焊根应力集中系数降低,焊趾应力集中系数升高；焊趾过渡半径较大时,随着焊趾过渡半径增大,焊根应力集中系数小幅增大,焊趾应力集中系数基本不变；应力集中系数关系方程与有限元计算结果吻合较好,焊根和焊趾应力集中系数的相对误差在5％和2％以内.
|
| 关 键 词： | 搭接接头 应力集中系数 焊根 焊趾 有限元 |
| 收稿时间： | 2012/5/31 0:00:00 |
Analysis of stress concentration factors of overlap joints based on finite element method |
| |
| FU Lei,CHENG Ronglong,YANG Jianguo,WANG Tao and FANG Hongyuan.Analysis of stress concentration factors of overlap joints based on finite element method[J].Transactions of The China Welding Institution,2013,34(7):109-112. |
| |
| Authors: | FU Lei CHENG Ronglong YANG Jianguo WANG Tao and FANG Hongyuan |
| |
| Affiliation: | State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China;Institute of Process Equipment and Control Engineering, Zhejiang University of Technology, Hangzhou 310014, China,State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China and State Key Laboratory of Advanced Welding and Joining, Harbin Institute of Technology, Harbin 150001, China |
| |
| Abstract: | Stress concentration factors have a significant effect on the load capacity of overlap joint.The influence of joint geometric parameters on stress concentration factors of bilateral welded undermatching overlap joints were studied based on the finite element method,and the stress concentration equation was founded based on regression analysis method.The result shows that the lap length plays the most important role in stress concentration factors.The stress concentration factors at weld root increase with the lap length increasing,weld width decreasing and weld toe smooth transition radius decreasing.The stress concentration factors at weld toe increase with the lap length and weld width increasing.Weld toe with smooth transition radius has little effect on concentration factors at weld toe.The stress concentration equation has a good agreement with the finite element result. |
| |
| Keywords: | overlap joint stress concentration factors weld root weld toe finite element |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《焊接学报》浏览原始摘要信息 |
|
点击此处可从《焊接学报》下载全文 |
|
