INTERFACIAL BEHAVIOR OF PIPE JOINTS UNDER TORSION LOADS  

作　　者：Jun Han Hong Yuan Jiayu Wu 

机构地区：[1]MOE Key Lab of Disaster and Control in Engineering, Institute of Applied Mechanics, Jinan University

出　　处：《Acta Mechanica Solida Sinica》2015年第5期521-535,共15页固体力学学报（英文版）

基　　金：supported by the Science and Technology Scheme of Guangzhou City(No.201510010013);the Science and Technology Scheme of Guangdong Province(No.2012A030200003);the National Natural Science Foundation of China(No.11032005)

摘　　要：The interfacial behavior of pipe joints is studied in this paper. Firstly, through nonlinear fracture mechanics, the analytical expressions of interfacial shear stress and the load- displacement relationship at loaded end of pipe joints under torsion loads are obtained. Thus the shear stress propagation and the debonding process of the whole interface for different bond lengths can be predicted. Secondly, through the analytical solutions, the influences of different bond lengths on the load-displacement curve and the ultimate load are studied. The stress trans- fer mechanism, the interface crack propagation and the ductility behavior of the joints can be explained.The interfacial behavior of pipe joints is studied in this paper. Firstly, through nonlinear fracture mechanics, the analytical expressions of interfacial shear stress and the load- displacement relationship at loaded end of pipe joints under torsion loads are obtained. Thus the shear stress propagation and the debonding process of the whole interface for different bond lengths can be predicted. Secondly, through the analytical solutions, the influences of different bond lengths on the load-displacement curve and the ultimate load are studied. The stress trans- fer mechanism, the interface crack propagation and the ductility behavior of the joints can be explained.

关 键 词：INTERFACE failure mechanism SOFTENING DEBONDING TORSION pipe joints 

分 类 号：O346[理学—固体力学]