Determination of fatigue damage based on dynamic response characteristics for spot-welded joints - 文章详情页

作者：

Shang, Deguang (Shang, Deguang.) (学者：尚德广) | Wang, Ruijie (Wang, Ruijie.) | Li, Lisen (Li, Lisen.) | Shen, Tong (Shen, Tong.)

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摘要：

The　characteristics　of　natural　frequency　change　of　dynamic　response　was　investigated　in　the　fatigue　process　for　deferent　tensile-shear　spot-welded　joints.　The　results　showed　that　the　natural　frequency　varies　non-linearly　with　the　fatigue　damage　fraction.　According　to　the　fatigue　behavior　and　the　characteristics　of　dynamic　response　frequency　change,　a　fatigue　damage　parameter　was　defined　by　the　change　of　natural　frequency　by　the　natural　frequency　non-linear　behavior　with　the　cycle　ratio.　The　proposed　fatigue　damage　parameter　can　describe　the　non-linear　fatigue　damage　behavior.　A　nonlinear　fatigue　damage　evolution　model　was　developed　by　the　continuum　fatigue　damage　theory.

关键词：

Dynamic response Fatigue damage Materials science Natural frequencies Spot welding Welds

作者机构：

[ 1 ] [Shang, Deguang]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 2 ] [Wang, Ruijie]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 3 ] [Li, Lisen]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China
[ 4 ] [Shen, Tong]College of Mechanical Engineering and Applied Electronics Technology, Beijing University of Technology, Beijing 100022, China

通讯作者信息：

电子邮件地址：

shangdg@bjut.edu.cn

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