Contact Analysis for Joint Interfaces of Machine Tools Based on a 3-D Anisotropic Asperity Model
In this paper, a 3-D contact model for anisotropic rough surfaces based on 3-D statistically measurements is established and finite element contact analysis is conducted. The average height of the asperity (h), the average summit distances between two neighboring peaks of asperities (Sx and Sy) are selected as the characterized parameters of the rough surface. Finite element simulation results show that the normal contact pressure has an exponential relation with the normal deformation and an exact linear relationship between the normal deformation and the real contact pressure of the surfaces is obtained. At last, the normal contact stiffness of the joint interface is obtained empirically with the exponential relationship assumption.
Zhengyi Jiang, Shanqing Li, Jianmin Zeng, Xiaoping Liao and Daoguo Yang
H. T. Liu et al., "Contact Analysis for Joint Interfaces of Machine Tools Based on a 3-D Anisotropic Asperity Model", Advanced Materials Research, Vols. 189-193, pp. 114-120, 2011