This paper presents a systematic finite element model to predict the fixture unit stiffness by introducing nonlinear contact elements on the contact surface between fixture components. The contact element includes three independent springs: two in tangential directions and one in the normal direction of the contact surface. Strong nonlinearity is caused by possible separation and sliding between two fixture components. The problem is formulated by the penalty function method and is solved by the Newton-Raphson procedure. The model was validated by two cases of analysis of a linear cantilever beam and a simple fixture unit with two components. The results are in agreement with the corresponding analytical solution of beams and the previous experimental results for fixture in the literature.
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May 2005
Technical Briefs
A Finite Element Analysis For Stiffness of Fixture Units
Y. Zheng,,
Y. Zheng,
Worcester Polytechnic Institute, Worcester, MA 01609
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Y. Rong, and,
Y. Rong, and
Worcester Polytechnic Institute, Worcester, MA 01609
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Z. Hou
Z. Hou
Worcester Polytechnic Institute, Worcester, MA 01609
Search for other works by this author on:
Y. Zheng,
Worcester Polytechnic Institute, Worcester, MA 01609
Y. Rong, and
Worcester Polytechnic Institute, Worcester, MA 01609
Z. Hou
Worcester Polytechnic Institute, Worcester, MA 01609
Contributed by the Manufacturing Engineering Division for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received May 4, 2003; revised June 8, 2004. Associate Editor: E. C. DeMeter.
J. Manuf. Sci. Eng. May 2005, 127(2): 429-432 (4 pages)
Published Online: April 25, 2005
Article history
Received:
May 4, 2003
Revised:
June 8, 2004
Online:
April 25, 2005
Citation
Zheng, , Y., Rong, and , Y., and Hou , Z. (April 25, 2005). "A Finite Element Analysis For Stiffness of Fixture Units ." ASME. J. Manuf. Sci. Eng. May 2005; 127(2): 429–432. https://doi.org/10.1115/1.1871183
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