Anisotropic rough surfaces representation in geometrical deviations modeling for tolerance analysis

Nan Shao, Jianhua Liu*, Nabil Anwer

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

Abstract

Accurate modeling of geometrical deviations is the premise and critical step for tolerance analysis. Traditional tolerance modeling methods usually simplify deviations to variations in degrees of freedom. Although this facilitates the uniform representation and accumulative calculation, it is not possible to consider the effects of real topography over mating interfaces on tolerance analysis in high-precision scenarios. In this regard, this paper proposed a tolerance modeling method for representing anisotropic rough surfaces information under the framework of Skin Model Shapes. Specifically, the spatial information on rough surfaces is represented by autocorrelation functions. A set of nonlinear equations are constructed according to given autocorrelation functions and then solved to obtain the desired surface topography. In case studies simulated rough surfaces with different input parameters are illustrated and the consistency of this method is verified. The proposed method provides an accurate and practical way to represent anisotropic rough surfaces for tolerance modeling and analysis.

Original languageEnglish
Pages (from-to)91-96
Number of pages6
JournalProcedia CIRP
Volume129
DOIs
Publication statusPublished - 2024
Event18th CIRP Conference on Computer Aided Tolerancing, CAT 2024 - Huddersfield, United Kingdom
Duration: 26 Jun 202428 Jun 2024

Keywords

  • Anisotropic Rough Surfaces
  • Geometrical Deviations Modeling
  • Skin Model Shapes
  • Tolerance Analysis

Cite this