Analytical study of investment casting with webbed epoxy patterns

W. L. Yao, M. C. Leu, H. Wong, D. H. Sebastian

Research output: Contribution to conferencePaperpeer-review

5 Scopus citations

Abstract

We describe in this paper a finite element analysis (FEA) study to analyze the stresses in the ceramic shells and epoxy patterns that are induced by the thermal expansion of the patterns in investment casting. Because it is computationally prohibitive to perform FEA of the stresses due to the thermal expansion of a complex pattern with an internal web structure, we devise a method which replaces the effect of the internal web structure by a set of forces exerting on the skin of the pattern. These forces are simply estimated from the web geometry and the heating temperature. The validity of this method is verified by comparing the FEA results using this technique and the FEA results obtained with exact web structure patterns. Also discussed are the effect of web geometry and location on thermal stresses and buckling of the web structure.

Original languageEnglish (US)
Pages11-15
Number of pages5
StatePublished - Dec 1 1996
EventProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition - Atlanta, GA, USA
Duration: Nov 17 1996Nov 22 1996

Other

OtherProceedings of the 1996 ASME International Mechanical Engineering Congress and Exposition
CityAtlanta, GA, USA
Period11/17/9611/22/96

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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