Examination on a Criterion for a Debonding Fracture of Single Lap Joints from the Intensity of Singular Stress Field
In this study,the experimental adhesive strength is newly considered in terms of the singular stress appearing at the end of interface between the adhesive and adherent.Here the critical intensity of singular stress field is examined as the debonding criterion for all types of single lap joints under different adhesive thickness and overlap length.The intensity of singular stress can be evaluated by the application of the finite element method focusing on the stress value at the end element of the interface.It should be noted that except for the case of small overlap length the separation always occurs at the edge of the interface causing unstable growth and final brittle fracture.In this type of fracture it is found that the critical intensity of the stress singular field is constant independent of the adhesive thickness and overlap length.
Adhesion Interface Intensity of Singular Stress Finite Element Method
Tatsujiro Miyazaki Nao-Aki Noda Rong Li Takumi Uchikoba Yoshikazu Sano
Department of Mechanical Engineering Systems,University of the Ryukyus,1 Senbaru,Nishihara-cho,Nakag Department of Mechanical Engineering,Kyushu Institute of Technology,1-1 Sensui-cho,Tobata-ku,Kitakyu Department of Mechanical and Control Engineering,Graduate School of Engineering,Kyushu Institute of
国际会议
北京
英文
1-7
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）