Many studies on the assembly of non-rigid parts suggest that the part variation affects the assembly dimensional quality. However, little is known about how the detailed microstructure of part variation influences the assembly dimensional quality. In this paper, a new method based on the finite element method (FEM) and fractal geometry is proposed to explore the influence of the part variation microstructure on the assembly dimensional variation. In the new method, a special fractal function, the Weierstrass-Mandelbrot (W-M) function, is used to extract and represent the characteristics of the part variation microstructure. FEM is applied to analyze the deformation of non-rigid parts by integrating the part variation microstructure. The contribution of the detailed part variation to the final assembly deformation is obtained by the influence coefficients method. The proposed method is implemented by using commercial software tools, ANSYS and Matlab. The proposed method is illustrated through a case study on an assembly of two flat sheet metal parts. This new approach should benefit high precision assemblies.
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ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
September 28–October 2, 2004
Salt Lake City, Utah, USA
Conference Sponsors:
- Design Engineering Division and Computers and Information in Engineering Division
ISBN:
0-7918-4696-2
PROCEEDINGS PAPER
Variation Analysis of Non-Rigid Assembly Using FEM and Fractals
Xiaoyun Liao,
Xiaoyun Liao
University of Manitoba, Winnipeg, MB, Canada
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G. Gary Wang
G. Gary Wang
University of Manitoba, Winnipeg, MB, Canada
Search for other works by this author on:
Xiaoyun Liao
University of Manitoba, Winnipeg, MB, Canada
G. Gary Wang
University of Manitoba, Winnipeg, MB, Canada
Paper No:
DETC2004-57753, pp. 685-692; 8 pages
Published Online:
June 27, 2008
Citation
Liao, X, & Wang, GG. "Variation Analysis of Non-Rigid Assembly Using FEM and Fractals." Proceedings of the ASME 2004 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 3d: 8th Design for Manufacturing Conference. Salt Lake City, Utah, USA. September 28–October 2, 2004. pp. 685-692. ASME. https://doi.org/10.1115/DETC2004-57753
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