Research on the micro and dynamic characteristics of combination surface based on fractal theory
<p>The dynamic characteristics of the mechanical joint surface are important aspects of the dynamic theoretical analysis and optimization design of the machine tool. In this paper, the typical mechanical joint surface is taken as the research object. Through the combination of theoretical anal...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2020-01-01
|
| Series: | Mechanical Sciences |
| Online Access: | https://www.mech-sci.net/11/1/2020/ms-11-1-2020.pdf |
| Summary: | <p>The dynamic characteristics of the mechanical joint surface are important
aspects of the dynamic theoretical analysis and optimization design of the
machine tool. In this paper, the typical mechanical joint surface is taken
as the research object. Through the combination of theoretical analysis and
experimental analysis, the dynamic characteristics of typical joint surface
parameters with different surface textures and the influence of texture
parameters on the dynamic characteristics of the joint surface are studied.
Based on the Hertz elastic contact theory and the contact fractal theory,
the normal and tangential contact fractal models of the joint surface are
derived, and then a mathematical model of the joint surface normal and
tangential contact stiffness considering the domain expansion factor is
established. The influence of surface texture parameters on the dynamic
characteristics of the surface is further studied according to the model. In
addition, the design of the experimental device and experimental scheme
design are completed by the contact resonance method and the ERA algorithm,
and the joint surface parameter identification experiment with texture is
conducted. The normal and tangential frequency response functions of the
joint surface, the dynamic characteristic parameters of the joint surface
and the influence law of the joint surface parameters on the contact
characteristics are obtained through the dynamic test analysis technology.</p> |
|---|---|
| ISSN: | 2191-9151 2191-916X |