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《Chinese Journal of Mechanical Engineering》 2005-05
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FATIGUE LIFE PREDICTION BASED ON DYNAMIC RESPONSE FINITE ELEMENT SIMULATION FOR SPOT-WELDED JOINT

Shang Deguang Wang Ruijie (College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022)  
Fatigue crack characteristics are investigated based on the dynamic response simulation by finite element and the dynamic response experiments for tensile-shear spot-welded specimens. In the different fatigue damage cumulative quantity, the dynamic response frequency is measured during the fatigue damage process. The results show that the natural frequency varies non-linearly with the fatigue damage fraction. On the basis of the relationship between the crack length and the natural frequency, the definition of fatigue crack initiation stage is proposed. Fatigue crack initiation life is predicted by the local stress and strain approach with the proposed fatigue crack initiation stage for tensile-shear spot-welded specimens. The results show that good agreement is achieved with experimental data.
【Fund】: 北京市自然科学基金(3042003) 北京市教委科技发展基金资助项目。
【CateGory Index】: TG407
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【References】
Chinese Journal Full-text Database 6 Hits
1 SHEN Tong SHANG DeGuang WANG RuiJie LI LiSen DING Lei YAN ChuLiang(College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100022,China);VARIATION OF NATURAL FREQUENCY FOR SPOT-WELDED JOINTS DURING FATIGUE DAMAGE PROCESS[J];Journal of Mechanical Strength;2007-02
2 LI LiSen SHANG DeGuang WANG RuiJie SHEN Tong DENG Jing(College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100022,China);FATIGUE DAMAGE ANALYSIS BASED ON FE SIMULATION AND DYNAMIC RESPONSE FOR DOUBLE-SPOT WELDED JOINTS[J];Journal of Mechanical Strength;2008-02
3 WANG Ruijie SHANG Deguang SHEN Tong LI Lisen YAN Chuliang (College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022);DAMAGE PARAMETERS OF TWO-SPOT WELDS USING VARIATION OF NATURAL FREQUENCY[J];Chinese Journal of Mechanical Engineering;2007-05
4 LI Xuepeng,SHANG Deguang,ZHOU Jianwei,BAO Ming(College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100124,China);Prediction of fatigue life based on change of natural frequency and load characteristic for spot welded joint[J];Transactions of the China Welding Institution;2010-05
5 Wang Ruijie,Xu Xiaodong,Liu Hongbin(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650093);Fatigue Damage Analysis Based on Natural Frequency for Tension Shear Spot Welds under Two-step Loading[J];Mechanical Science and Technology for Aerospace Engineering;2010-09
6 Shen Tong~(1,2) Shang Deguang~1 Zhang Furong~3 Wang Ruijie~1 1.College of Mechanical Engineering aud Applied Electronics Technology,Beijing University of Technology,Beijing 100022;2.Beijing Aeronautical Manufacturing Technology Research Institute,Beijing 100024;3.Daqin Railway Co.,Ltd,Datong 037005;A Study on Fatigue Damage and Life Prediction for Spot-welded Joints Based on Dynamic Response Characteristics[J];Automotive Engineering;2008-01
【Co-references】
Chinese Journal Full-text Database 10 Hits
1 SHANG De-guang ( College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China );Fatigue Damage Parameter of Spot-welded Joints Based on Dynamic Response Characteristics[J];Journal of Beijing Polytechnic University;2004-02
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【Secondary References】
Chinese Journal Full-text Database 2 Hits
1 LI Xuepeng,SHANG Deguang,ZHOU Jianwei,BAO Ming(College of Mechanical Engineering and Applied Electronics Technology,Beijing University of Technology,Beijing 100124,China);Prediction of fatigue life based on change of natural frequency and load characteristic for spot welded joint[J];Transactions of the China Welding Institution;2010-05
2 LIANG ZhaoFeng1,2,3 ZHOU GuangPing1 MO XiPing3 ZHANG YiHui 1(1.Department of Electronic Engineering,Shenzhen Polytechnic,Shenzhen 518055,China)(2.Graduate University of Chinese Academy of Sciences,Beijing 100080,China)(3.Institute of Acoustics,Chinese Academy of Sciences,Beijing 100080,China);DESIGN OF LARGE CROSS-SECTION CYLINDRICAL-TYPE ULTRASONIC PLASTIC WELDING HORNS WITH SLOTS[J];Journal of Mechanical Strength;2010-04
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