Abstract
In the previous research the intensity of singular stress at the end of interface for bonded plate was discussed under arbitrary material combinations. Then it was found that the bonded strength of butt joint can be evaluated in terms of the singular stress in good accuracy. In this study the intensity of singular stress for bonded pipe is newly discussed in comparison with the one of bonded plate. The finite element method is applied to calculate the intensity of singular stress with varying the material combination systematically. This method focuses on the results of first node locating at the end of the interface. Until now few studies are available for bonded pipe, in this study, the effect of the material combination on the intensity of singular stress is discussed by changing the material combination systematically. It is found that the intensity of singular stress of bonded pipe is 0.8-1.5times larger than the one of bonded plate for almost material combinations. This investigation may contribute to a better understanding of the debonding strength and initial interfacial cracking of bonded pipe.
