基于等效结构应力法的正弦波纹腹板焊接梁疲劳评定研究

详细信息    查看全文 | 推荐本文 |

英文篇名：Equivalent structure stress based fatigue evaluation for welded girders with sinusoidally corrugated webs 作者：马超 ; 范勤 ; 魏国前 英文作者：MA Chao;FAN Qin;WEI Guoqian;School of Machinery and Automation,Wuhan University of Science and Technology; 关键词：正弦波纹腹板 ; 焊接梁 ; 等效结构应力法 ; 疲劳评定 英文关键词：sinusoidally corrugated webs;;welded girders;;equivalent structural method;;fatigue evaluation 中文刊名：ZJYC 英文刊名：Manufacturing Technology & Machine Tool 机构：武汉科技大学机械自动化学院; 出版日期：2016-02-02 出版单位：制造技术与机床 年：2016 期：No.644 基金：湖北省自然科学基金(2014CFB803);; 湖北省教育厅重点项目(D20131102) 语种：中文; 页：ZJYC201602031 页数：4 CN：02 ISSN：11-3398/TH 分类号：87-90

摘要

针对Harrison的正弦波纹腹板焊接梁试验模型,采用等效结构应力法,研究了焊缝焊趾的等效结构应力分布特性及网格大小对应力分布的影响,分析了裂纹萌生位置及其疲劳寿命。对比Harrison的试验结果,验证了等效结构应力法在正弦波纹腹板焊接梁疲劳评定方面的适用性。
        For welded girders with sinusoidally corrugated webs,through Harrison test model,using the equivalent structural method,the stress distribution in welds and the influence of grid size on the stress distribution have been studied,the cracks position has been analyzed,and the fatigue life has been calculated.Compared Harrison test result,equivalent structural method shows better applicability in terms of fatigue evaluation for welded girders with sinusoidally corrugated webs.

引文

[1]周张义,李芾,卜继玲.基于名义应力的焊接结构疲劳强度评定方法研究[J].内燃机车,2007,7(7):1-7.
    [2]彭凡,姚建云,顾勇军.热点应力法评定焊接接头疲劳强度的影响因素[J].焊接学报,2010(7):83-86.
    [3]Dong P.A structural stress definition and numerical implementation for fatigue analysis of welded joints[J].International Journal of Fatigue,2001,23(10):865-876.
    [4]Dong P,Hong J K,Osage D,et al.Master S-N Curve Method for Fatigue Evaluation of Welded Components[J].WRC Bulletin,2002(8):474.
    [5]Anami K,Sause R,Abbas H H.Fatigue of web-flange weld of corrugated web girders:1.Influence of web corrugation geometry and flange geometry on web-flange weldtoe stresses[J].International Journal of Fatigue,2005,27(4):373-381.
    [6]Anami K,Sause R.Fatigue of web-flange weld of corrugated web girders:2.Anaiytical evaluation of fatigue strength of corrugated web-flange weld[J].International Journal of Fatigue,2005,27(4):383-393.
    [7]董亚飞,魏国前,岳旭东,等.梯形波纹腹板焊接梁疲劳寿命分析[J].焊接学报,2015(2):79-82.
    [8]Harrison,J D.Exploratory fatigue tests on two girders with corrugated webs[J].British Welding Journal,1965(3):121-125.