界面要素を用いたFEMによる溶接高温割れに関する理論的研究(第三報) : 静的-動的混合解法の開発

概要

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The authors proposed a FEM code for hot cracking analysis using temperature dependent interface element in the first report. It was applied to the analysis of hot cracking test under welding. Thrugh comparison with experimental results, the validity of proposed method was demonstrated. However, the stable static solution is not always guaranteed due to the strong nonlinearity of the interface elelment. To avoid this problem, static-dynamic hybrid method is developed. The proposed method is applied to tensile test of elastic and elastic-plastic plates with initial crack, It is also applied to Fish Bone type hot cracking test and the versatility of proposed method is examined. By introducing static-dynamic hybrid method, it becomes possible to analyze the entire process of crack growth from the initiation to its arrest.
2001-03-25