关键词: 圆弧结合界面, 复合材料, 应力特性, 仿真方法

Abstract:

The mathematical models to calculate the resultant stress in transition area and the peak of interfacial stress were established based on the thick-cylinder theory and Hertz contact theory. And the analytical expression was derived. Simulation results reveal  the stress characteristics of arc binding interface.It is concluded that the axial stress  presents the U-distribution, both ends of the stress are large, the middle stress is relatively stable. Obvious stress mutations of the circumferential stress appear in the junction of bearing and non-bearing area. Comparing the calculated and simulated methods, the mean error of stress in arc binding interface is less than that in transition area, and both of them is less than 5%. Experiments show all errors of experimental values and simulated values are less than 2%. Experimental results are consistent with simulation ones. It suggests that analytic solution and simulation are relatively effective. This work can provide references for the theoretical calculation and experimental verification of interfacial binding strength, and give out some improvement recommendations for oil-film bearing maintenance.

Key words: arc , binding interface;composite material;stress characteristics;simulation method