Study on Yield Load and Maximum Load of Front Fillet Weld Joint

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  • 前面隅肉溶接継手の降伏荷重および最大荷重に関する研究

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The purpose of this paper is to examine the yield load, yield angle, maximum load, and fracture angle of the front fillet weld joint, following experiments and analytical studies. According to the research of the past, it is known that the strength of front fillet weld joint is higher than the strength of side fillet weld joint. However, the detailed stress state of front fillet weld joint has not been investigated. The yield load, yield angle, maximum load, and fracture angle were investigated by loading test using specimen which was cut by electric discharge machining in order to match the material characteristic of the front fillet weld joint part and the plate elements. In this paper, the mechanical performance of shape of front fillet weld joint was clarified through loading test. Then, detailed stress state and strain state of fillet weld joint are investigated by 3D analytical studies as it could not be grasped by loading test. <br>As a result of the studies, loading test indicates that the yield load is 1.16 and 1.17 times, the maximum load is 1.83 times and 1.84 times design formula of front fillet weld joint, yield surface is 27°, fracture surface is 21° and 15°. Then, in the 3D analytical study, the yield load is 1.27 times and the maximum load is 1.97 times.

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