Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Analysis of Anisotropic Structures under Multiphysics Environment

멀티피직스 환경하의 이방성 구조물 해석

  • Kim, Jun-Sik (Department of Intelligent Mechanical Engineering, Kumoh National Institute of Technology) ;
  • Lee, Jae-Hun (School of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Park, Jun-Young (Department of Mechanical Design Engineering, Kumoh National Institute of Technology)
  • Received : 2011.11.08
  • Accepted : 2011.12.06
  • Published : 2011.12.31
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Abstract

An anisotropic beam model is proposed by employing an asymptotic expansion method for thermo-mechanical multiphysics environment. An asymptotic method based on virtual work is introduced first, and then the variables of mechanical displacement and temperature rise are asymptotically expanded by taking advantage of geometrical slenderness of elastic bodies. Subsequently substituting these expansions into the virtual work principle allows us to asymptotically expand the virtual work. This will yield a set of recursive virtual works from which two-dimensional microscopic and one-dimensional macroscopic equations are systematically derived at each order. In this way, homogenized stiffnesses and thermomechanical coupling coefficients are derived. To demonstrate the validity and efficiency of the proposed approach, composite beams are taken as a test-bed example. The results obtained herein are compared to those of three-dimensional finite element analysis.

Keywords

Acknowledgement

Supported by : Kumoh National Institute of Technology

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