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부명환(Myung-Hwan Boo),박치용(Chi-Yong Park),김진원(Jin-Weon Kim),이선학(Seon-Hak Lee),정재경(Jai-Kyung Jung) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.8
In heavy industrial fields such as power plant and chemical plant, it is often necessary to restore a damaged part of large machinery or structure which is installed in the hazard working place. In this paper, to estimate residual stresses during the process of damaging and restoring of cylindrical beam structure, a finite element technique has been used. The variations of residual stresses on the process of damaging and restoring for surfaces and cross-sections have been examined. The results show that the maximum von Mises stresses occur outer cylinder surfaces of boundary between cylindrical beam support and cylindrical beam when deformation procedure and restoring force is applied. The maximum residual stress remain 158.6㎫ in the inner wall and this value correspond to 53% of yield stress when deformation and restoration procedure is finished.