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Contact Heat Transfer Coefficient for Finite Element Analysis in Warm Forging Processes

온간단조 공정의 계면열전달계수

  • 강종훈 (발레오 전장 시스템(주)) ;
  • 고병호 (발레오 전장 시스템(주)) ;
  • 제진수 (경상대학교 수송기계공학부) ;
  • 강성수 (부산대학교 정밀기계공학과)
  • Published : 2006.04.01

Abstract

Heat transfer coefficients have great influence on finite element analysis results in elevated temperature forging processes. Experimentally calculated contact heat transfer coefficient is not suitable for one-time finite element analysis because analyzed temperature will be appeared to be too low. To get contact heat transfer coefficient for one-time finite element analysis, tool temperature in operation was measured with thermocouple and repeated finite element analysis was performed with experimentally calculated contact and cooling heat transfer coefficient. Surface temperature of active tool was obtained comparing measurement and analysis results. Contact heat transfer coefficient for one-time finite element analysis was achieved analyzing surface temperature between repeated finite element analysis and one-time finite element analysis results.

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