Abstract:  In order to reduce the quality of bearing rolling elements, a bionic ball bearing structure with threelayer material rolling elements was proposed through the layered structure of the bionic tortoise shell. First, the contact stress was calculated for the solid ball bearing conforming to the Hertz theory, then the Workbench software was used to perform the static simulation of the solid ball bearing. The simulation and theoretical values within the allowable error range were obtained. Finally, the analysis process was used to analyze the different intermediate layers. The bionic ball bearing with thick rolling elements was statically analyzed and compared with the solid ball bearing. The research results show that as the thickness of the intermediate layer of the rolling elements increases, the maximum contact stress of the bionic ball bearing shows a nonlinear downward trend and is lower than that of the solid ball bearing; the maximum equivalent(von-Mises) stress of the bionic ball bearing shows first decrease and then increase in the designed simulation test, when the thickness of the middle layer of the rolling element is 5.0mm, the maximum equivalent(von-Mises) stress of the bionic ball bearing is the lowest and is lower than that of the solid ball bearing. The above research content provides a theoretical basis for the structural design of ball bearing rolling elements.

Key words:  layered structure;bionic ball bearing; static analysis; maximum contact stress; maximum equivalent stress

LI Hai-long, LI Cong, ZHANG Xin-ming, et al. Statics simulation analysis of bionic ball bearing based on tortoise shell structure［J］.Journal of Mechanical & Electrical Engineering, 2021,38(9):1117-1123.