Three-dimensional fractal model of contact stress of cylinder joint

WANG Xue; LI XiaoPeng; XU JinChi

doi:10.16579/j.issn.1001.9669.2024.03.022

您当前的位置：

首页 >

文章列表页 >

Three-dimensional fractal model of contact stress of cylinder joint

Design·Calculation | 更新时间：2024-10-15

- Three-dimensional fractal model of contact stress of cylinder joint
- Journal of Mechanical Strength Vol. 46, Issue 3, Pages: 693-700(2024)
- 作者机构：
  
  1. 东北大学机械工程与自动化学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2024.03.022
  CLC： TH117.1
- Published：15 June 2024，
- 稿件说明：
移动端阅览
WANG Xue, LI XiaoPeng, XU JinChi. Three-dimensional fractal model of contact stress of cylinder joint. [J]. Journal of Mechanical Strength , 2024,46(3):693-700.
DOI：

WANG Xue, LI XiaoPeng, XU JinChi. Three-dimensional fractal model of contact stress of cylinder joint. [J]. Journal of Mechanical Strength , 2024,46(3):693-700. DOI： 10.16579/j.issn.1001.9669.2024.03.022.

摘要

为了对机械结构中圆柱结合部的承载能力进行研究

基于Hertz接触理论，并结合修正的三维分形理论

应用三维分形曲面来模拟实际工程中的结合面，在综合考虑宏观特性因素与微观形貌因素的情况下，建立了圆柱结合部接触应力的三维分形模型，并与Hertz接触模型进行了对比分析，证明了所建立模型的合理性。通过Matlab仿真分析得到，从宏观特性因素上，可以选用内接触圆柱结合部，或增大小圆柱体的半径来降低接触应力，提高承载能力；从微观形貌因素上，可以减小分形尺度参数，或减小材料特性参数来降低接触应力。分形维数对接触应力的影响比较复杂：当2.1≤

≤2.5时，增大分形维数，可以降低接触应力；当2.5≤

≤2.9时，减小分形维数，可以降低接触应力。

Abstract

In order to study the carrying capacity of the cylinder joint in the mechanical structure

based on Hertz contact theory and combined with the modified three-dimensional fractal theory

the three-dimensional fractal theory was applied to simulate the actual engineering joint surface

and a three-dimensional fractal model of the contact stress of the cylinder joint was established under the comprehensive consideration of the macroscopic characteristics and the microscopic morphology factors. And a comparative analysis was conducted with the

Hertz contact model

proving the rationality of the established model. Through Matlab simulation analysis

from the macro characteristics

the contact stress can be reduced and the carrying capacity can be improved by using the form of internal contact cylinder joint or by increasing the radius of the cylinder. From the aspect of microscopic morphology

the contact stress can be reduced by reducing the fractal dimension parameter and the material characteristic parameter. The influence of the fractal dimension of the micro-topography parameter on the contact stress is complex. When 2. 1 ≤

≤2.5

increasing the fractal dimension can reduce the contact stress. When 2.5 ≤

≤ 2. 9

reducing the fractal dimension can reduce the contact stress.

关键词

圆柱结合部三维分形理论接触应力承载能力

Keywords

Cylinder jointThree-dimensional fractal theoryContact stressCarrying capacity

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

STUDY ON CONTACT STRESS OF BEVELOID GEAR BASED ON FRACTAL THEORY

SIMPLIFIED CALCULATION OF MESHING STRENGTH OF FACE GEAR PAIR (MT)

ANALYSIS OF LOAD-BEARING MESHING CHARACTERISTICS OF CYCLOIDAL PINWHEEL OF RV REDUCER BASED ON FINITE ELEMENT MODELING (MT)

RESEARCH AND VERIFICATION OF CONTACT STRESS CALCULATION METHOD FOR FIVE-BALL FATIGUE TESTING MACHINE

RESEARCH ON THE CONTACT STRESS OF ROLLS AND FATIGUE DAMAGE DISTRIBUTION OF BACKUP ROLL IN FOUR HIGH PC MILL

Related Author

LI ZeYu

REN ZhongTao

WEI YongQiao

DONG ChangBin

WEI Shuai

LIU YongPing

PENG XianLong

FU XueZhong

Related Institution

School of Mechanical & Electrical Engineering, Lanzhou University of Technology

School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology

School of Mechanical Engineering, Xi′an University of Science and Technology

Hebei Key Laboratory of Robot Sensing and Human-Robot Integration, School of Mechanical Engineering,Hebei University of Technology

State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology

⁰