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Subdomain-Based Finite Element Method for Thermomechanical Analysis with Thermal Radiation

열복사를 고려한 열기계학적 해석을 위한 유한요소 부영역 결합법의 적용

  • 신의섭 (전북대학교 기계항공시스템공학부) ;
  • 진지만 (전북대학교 대학원, 현재 (주)데크)
  • Published : 2006.06.01

Abstract

A finite element method based on the penalized subdomain-interface framework is proposed for fully-coupled, nonlinear thermomechanical analyses with thermal contact anuor radiation boundaries. In the variational formulation, a well-known penalty functional scheme is adopted for connecting subdomains and interfaces that satisfy various continuity requirements. As a logical consequence, the whole domain can be arbitrarily divided into independently-modeled subdomains without considering the conformity of meshes along their interfaces. Since the nonlinearities due to the contact and radiation boundaries can be localized within a few subdomains, the computational efficiency of the present method is greatly increased with appropriate solution algorithms. By solving some numerical problems, these advantageous features are confirmed carefully.

Keywords

Subdomain;Finite Element Method;Thermomechanical Analysis;Thermal Radiation

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