Journal of the Korean Society for Precision Engineering (한국정밀공학회지)
- Volume 14 Issue 4
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- Pages.72-77
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- 1997
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- 1225-9071(pISSN)
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- 2287-8769(eISSN)
Determination of the Overall Heat Transfer Coefficient for Non-isothermal Finite Element Analysis
비 등온 유한요소해석을 위한 접면열전달계수의 결정
Abstract
In the temperature analysis of hot metal forming process, the heat transfer conditions between the work-piece and the tool have improtant influences upon the temperature distribution. The accuracy of thermal analysis depends on the proper description of boundary conditions including heat transfer. At the contact surface of two materials with different temperatures, this requires the knowledge of the overall heat transfer coefficient. In order to determine the overall heat transfer coefficient, a technique is developed. The technique involves temperature measurement by using thermocouples during hot upsetting operations and finite element computation. The overall heat transfer coefficient is determined using a non-linear optimization technique.
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