G0301102 き裂進展を考慮したスポット溶接部の疲労寿命解析(第2報,スポット溶接部のき裂発生・進展予測解析手法の開発)

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タイトル別名
  • G0301102 Fatigue Life Prediction for Spot Weld Joints Considering Crack Propagation (2nd Report, Fatigue Life Prediction Method for Spot Weld Joints using Crack Propagation Simulation)

説明

Many kinds of joining methods are proposed for thin plate structures such as an automotive body. It is important to investigate the fatigue behavior of these joints. However, a large amount of fatigue tests are necessary to recognize the fatigue lives of these joints. Therefore, it is efficient to predict the fatigue life by numerical simulations to reduce the tests. In this paper, a fatigue life prediction method considering the transition from surface crack to through crack is reported. Numerical results of spot-welding specimens for SPC270 and SCGA590 are compared with the S-N curves obtained from fatigue tests, and proposed methodology is considered to be efficient for predicting S-N curves.

収録刊行物

  • 年次大会

    年次大会 2015 (0), _G0301102--_G0301102-, 2015

    一般社団法人 日本機械学会

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