ボルト締結と接着を併用した接合体における界面剛性のマルチスケールモデリング

抄録

This study has developed a multiscale model which simulates stiffness reduction of interfaces of bolted and bonded joints. The multiscale model describes microscopic contact of asperities formed on the interfaces. A series of hammering tests and numerical simulations by the finite element method have been conducted. Various patterns of surface texture are given to the jointed interfaces of the specimen. The multiscale model is introduced as interfacial elements into the finite element model. The natural frequency of specimen obtained by the numerical simulations agree with the hammering tests. The bonded parts reduce the effects of the surface texture of the interfaces and the clamping force by the bolt and nut.