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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 국제구조공학회 Structural Engineering and Mechanics, An Int'l Journal Structural Engineering and Mechanics, An Int'l Journal Vol.53 No.4
- 발행연도
- 2015.1
- 수록면
- 703 - 723 (21page)
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In this paper optimization of volume fraction distribution in a thick hollow cylinder with finite length made of two-dimensional functionally graded material (2D-FGM) and subjected to steady statethermal and mechanical loadings is considered. The finite element method with graded material properties within each element (graded finite elements) is used to model the structure. Volume fractions of constituent materials on a finite number of design points are taken as design variables and the volume fractions at any arbitrary point in the cylinder are obtained via cubic spline interpolation functions. The objective function selected as having the normalized effective stress equal to one at all points that leads to a uniform stress distribution in the structure. Genetic Algorithm jointed with interior penalty-function method for implementing constraints is effectively employed to find the global solution of the optimization problem.
Obtained results indicates that by using the uniform distribution of normalized effective stress as objective function, considerably more efficient usage of materials can be achieved compared with the power law volume fraction distribution. Also considering uniform distribution of safety factor as design criteria instead of minimizing peak effective stress affects remarkably the optimum volume fractions.
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참고문헌 (35)
참고문헌 신청
Abudi, J. / 1996 / Thermoelastic theory for the response of materials functionally graded in two directions / Int. J. Solid. Struct 33(7):931~966
Arora, J. / 2004 / Introduction to Optimum Design / Academic Press
Asgari, M. / 2009 / Transient heat conduction in two-dimensional functionally graded hollow cylinder with finite length / Heat Mass Trans 45:1383~1392
Asgari, M. / 2010 / Transient thermal stresses in two-dimensional functionally graded thick hollow cylinder with finite length / Arch. Appl. Mech 80:353~376
Asgari, M. / 2011 / Thermo-mechanical analysis of 2D-FGM thick hollow cylinder using graded finite elements / Adv. Struct. Eng 14:1059~1073
Arora, J. / 2004 / Introduction to Optimum Design / Academic Press
Asgari, M. / 2009 / Transient heat conduction in two-dimensional functionally graded hollow cylinder with finite length / Heat Mass Trans 45:1383~1392
Asgari, M. / 2010 / Transient thermal stresses in two-dimensional functionally graded thick hollow cylinder with finite length / Arch. Appl. Mech 80:353~376
Asgari, M. / 2011 / Thermo-mechanical analysis of 2D-FGM thick hollow cylinder using graded finite elements / Adv. Struct. Eng 14:1059~1073
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