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Influence of Stress Shape Function on Analysis of Contact Problem Using Hybrid Photoelasticity

광탄성 실험 하이브리드 법에 의한 접촉응력 해석시 응력형상함수의 영향

  • 신동철 (거제대학교 기계공학과) ;
  • 황재석 (영남대학교 기계공학부)
  • Received : 2012.08.02
  • Accepted : 2012.11.12
  • Published : 2013.03.01

Abstract

In this research, a study on stress shape functions was conducted to analyze the contact stress problem by using a hybrid photoelasticity. Because the contact stress problem is generally solved as a half-plane problem, the relationship between two analytical stress functions, which are compositions of the Airy stress function, was similar to one of the crack problem. However, this relationship in itself could not be used to solve the contact stress problem (especially one with singular points). Therefore, to analyze the contact stress problem more correctly, stress shape functions based on the condition of two contact end points had to be considered in the form of these two analytical stress functions. The four types of stress shape functions were related to the stress singularities at the two contact end points. Among them, the primary two types used for the analysis of an O-ring were selected, and their validities were verified in this work.

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