抄録
intensity analysis and damage experiments of a universal joint. The Kashiwazaki Kariwa nuclear power plant suffered damage from the Niigata Chuetsu offing earthquake. The earthquake motion damaged an overhead traveling crane of the No.6 nuclear reactor building. The damaged portion consisted of the universal joint. As a cause of the damage it is thought that the universal joint was loaded from the torque of the earthquake motion. In the experiment, the miniature model of the universal joint is loaded with the torque and damaged. Similarly, in the analysis by 3DCAD and CAE, the miniature model is loaded with the torque and damaged. The experimental result is compared with the analysis result and the validity of the analysis is examined.