Coming out prevention by stopper for the shrink fitted sandwiched shaft from the ceramic sleeve

12th International Conference on Damage Assessment of Structures

Zhang, Guowei^1 ; Noda, Nao-Aki^1 ; Sano, Yoshikazu^1 ; Sakai, Hiromasa^1 ; Oda, Kazuhiro^2

Department of Mechanical and Control Engineering, Kyushu Institute of Technology, Sensui-Cho 1-1, Tobata-Ku, Kitakyushu-Shi, Fukuoka, Japan^1

Department of Mechanical and Energy Systems Engineering, Oita University, 700 Dannoharu, Oita-Shi, Oita, Japan^2

关键词: 2D simulations;    Compressive forces;    Contact forces;    Friction coefficients;    High temperature resistance;    Loading cycles;    Repeated loads;    Research focus;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/842/1/012051/pdf
DOI  :  10.1088/1742-6596/842/1/012051

来源: IOP

【 摘 要 】

Ceramic roller can be used in the heating furnace conveniently because of its high temperature resistance. The roller consists of sleeve and steel shaft connected only under a small shrink fitting ratio because of the brittleness. However, the coming out of the shaft may often happen from the ceramic sleeve under repeated bending load. Therefore, how to prevent the coming out failure becomes an important issue. Based on the previous study, a two-dimensional shrink fitted structure is considered by replacing the shaft with the inner plate and by replacing the sleeve with the outer plate. Then, this research focuses on preventing the inner plate coming out from the outer plate by introducing a newly designed stopper on the outer plate. The simulation results shows that the coming out phenomenon can be prevented effectively due to the contact between the inter plate and the stopper installed on the outer plate. In order to evaluate the contact force between the inner plate and the stopper, the coming out mechanism is clarified. To prevent the coming out by stopper safely, the effects of the magnitude of repeated load and the friction coefficient upon the contact compressive force are investigated under large number of loading cycles by using 2D simulation.