Optimum Design of Thermoelastic Multi-Layer Cylindrical Tube

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Journal of the Korea Institute of Military Science and Technology 2000;3(2):179-188.

열탄성 거동을 나타내는 다층 실린더의 최적설계

조희근, 박영원

아주대학교 시스템공학과

Abstract

Multi-disciplinary optimization design concept can provide a solution to many engineering problems. In the field of structural analysis, much development of size or topology optimization has been achieved in the application of research. This paper demonstrates an optimum design of a multi-layer cylindrical tube which behaves thermoelastically. A multi-layer cylindrical tube that has several different material properties at each layer is optimized within allowable stress and temperature range when mechanical and thermal loads are applied simultaneously. When thermal loads are applied to a multi-layer tube, stress phenomena become complicated due to each layer's thermal expansion and the layer thicknesses. Factors like temperature; stress; and material thermal thicknesses of each tube layer are very difficult undertaking. To analyze these problems using an efficient and precise method, the optimization theories are adopted to perform thermoelastic finite element analysis.

Key Words: Thermoelastic, Finite Element Method, Thermal Stress