VIRTUAL MATERIAL SIMULATION OF CONTACT PROPERTIES OF STEEL-BFPC JOINT SURFACE BASED ON DISCRETE PRINCIPLE

In order to accurately calculate the actual contact area ratio of the steel-BFPC joint surface, a virtual material simulation method for the contact performance of the steel-BFPC joint surface based on discrete method was established. The calculation method of the actual contact area ratio of the steel-BFPC joint surface was established by discretizing the contact rubbings of the joint surface, and the corresponding calculation program was compiled to analyze the influence law of different joint surface pressure on actual contact area ratio. Based on the calculated actual contact area ratio, a virtual material simulation analysis model of the steel-BFPC joint surface was established. Through virtual material simulation and experiment, the modal characteristics of steel-BFPC joint surface piece were studied respectively, and the results of the two methods were compared and analyzed. The results show that the maximum relative error between the natural frequency of the two is +6.48% and the vibration mode is consistent. The accuracy of the discrete calculation method of the actual contact area ratio of the steel-BFPC joint surface and the virtual material simulation method has been proved.