Numerical Evaluation of Stress Intensity Factors at Crack Tips in Weldments

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概要

• 論文の詳細を見る

• It is noted that the stress distribution around a crack tip in weldments is known as one of the most important factors to evaluate the fracture performances of the welded structures. However, it is still less economical to calculate the welding residual stress as well as the external restraint loading stress around a crack tip in weldments by the thermo-elasto-plastic finite element method. In this paper a different approach which combines the linear boundary element method with the linear finite element method is proposed in order to solve this kind of problems. Subsequently, a generalized stress distribution model is also intorduced in this paper. And hence, the stress intensity factor for all the cases can be evaluated accurately by linear extrapolation. Then, the analysis of a slit-type butt welded plate with a transverse delayed crack and subjected to external restraint tensile loading is carried out to demonstrate the validity of this proposed numerical method.

• 社団法人溶接学会の論文
• 1990-04-01

著者

• Chiou Yii

  Department Of Mechanical Engineering National Sun Yat Sen University

• CHIEN Chi

  Department of Mechanical Engineering, National Sun Yat Sen University

• CHEN Horng

  Department of Mechanical Engineering, National Sun Yat Sen University

• Chien Chi

  Department Of Mechanical Engineering National Sun Yat Sen University

• Chien Chi

  Department Of Cell Biology And Anatomy College Of Medicine National Cheng Kung University

• Chen Horng

  Department Of Mechanical Engineering National Sun Yat Sen University

関連論文

• Numerical Evaluation of Stress Intensity Factors at Crack Tips in Weldments
• The Estimation of Welding Residual Stresses by Using Simulated Inherent Strains
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