The Research on Finite Element Simulation of Deformable Bodies Contact
|Keywords:||有限元素法;接觸;赫茲問題;網格;接觸應力;Finite element method;contact;hertz problem;mesh;contact stress|
As the finite element method is used on surface contact problems of two deformable bodies, meshes should be built on both bodies. The solutions for these contact problems sometimes differ from each other only because of the variation of mesh system between contact interfaces. The purpose of this research is thus focused on finding suitable mesh systems for this kind of contact problem. In the beginning, a two-dimensional cylindrical Hertz bodies contact model was considered. The Hertzian analytical solution was used as a basis for the comparison of different mesh systems denoted as “localized element density”, “nodes touch on contact surfaces”, and “quadratic elements”. Through these comparisons, the characteristics of different meshes were obtained. Next, to validate universality of the above characteristics, similar simulations were tested on two-dimensional gear contact problem that has more complex surface features. Through these processes, mesh systems with higher numerical precision and suitable computing time were obtained for the contact simulation of deformable bodies.
|Appears in Collections:||Thesis|