Ziwei Qi
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Ziwei Qi has a total of 5 co-authors. Here are the top co-authors by number of shared publications:
- Hanbin Zhu
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
1 shared publication - Huajie Wu
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
1 shared publication - Junbo Huang
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
1 shared publication - Laihua Tao
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou 310018, China
1 shared publication - Qiaoyi Wang
School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, China
1 shared publication
Latest Publications
- Open Access
Analysis of the Rolling Interface Contact Characteristics in Mixed Lubrication Based on Gaussian Distribution Theory
To reveal the influence of surface morphology characteristics in mixed lubrication on the contact characteristics of the rolling interface, a random three-dimensional rough surface model based on Gaussian distribution theory was established. The model utilizes the finite element method (FEM) to simulate the regular contact and tangential sliding behavior of micro-asperities at the rolling interface in mixed lubrication conditions. The connection bearing capacity of models with varied roughness in mixed lubrication was studied. Furthermore, the effect of various sliding and normal indentation amounts on the normal and friction stress was investigated. The simulation result reveals that the roughness of the surface influences the distribution of the lubricating oil film. The lubricating oil layer between the interfaces with a lower roughness has a higher bearing capacity due to its more uniform distribution of peaks and valleys. An increase in the normal indentation amount raises the friction stress and normal stress. In contrast, an increase in sliding lowers the normal pressure, substantially impacting the fluctuation of the friction coefficient dramatically. Finally, the random three-dimensional rough surface model is verified by comparing it with the experimental data in the related literature.
Open AccessAnalysis of the Rolling Interface Contact Characteristics in Mixed Lubrication Based on Gaussian Distribution Theory
To reveal the influence of surface morphology characteristics in mixed lubrication on the contact characteristics of the rolling interface, a random three-dimensional rough surface model based on Gaussian distribution theory was established. The model utilizes the finite element method (FEM) to simulate the regular contact and tangential sliding behavior of micro-asperities at the rolling interface in mixed lubrication conditions. The connection bearing capacity of models with varied roughness in mixed lubrication was studied. Furthermore, the effect of various sliding and normal indentation amounts on the normal and friction stress was investigated. The simulation result reveals that the roughness of the surface influences the distribution of the lubricating oil film. The lubricating oil layer between the interfaces with a lower roughness has a higher bearing capacity due to its more uniform distribution of peaks and valleys. An increase in the normal indentation amount raises the friction stress and normal stress. In contrast, an increase in sliding lowers the normal pressure, substantially impacting the fluctuation of the friction coefficient dramatically. Finally, the random three-dimensional rough surface model is verified by comparing it with the experimental data in the related literature.