INVESTIGATION ON BUCKLING OF ORTHOTROPIC CIRCULAR AND ANNULAR PLATES OF CONTINUOUSLY VARIABLE THICKNESS BY OPTIMIZED RITZ METHOD

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FARHATNIA F.; GHOL SHAH A.

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Journal: JOURNAL OF SIMULATION AND ANALYSIS OF NOVEL TECHNOLOGIES IN MECHANICAL ENGINEERING (JOURNAL OF SOLID MECHANICS IN ENGINEERING) Year:2008 | Volume:1 | Issue:2 Page(s): 31-40

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Title

INVESTIGATION ON BUCKLING OF ORTHOTROPIC CIRCULAR AND ANNULAR PLATES OF CONTINUOUSLY VARIABLE THICKNESS BY OPTIMIZED RITZ METHOD

Author(s)

FARHATNIA F. | GHOL SHAH A. | Issue Writer Certificate

Keywords

BUCKLINGQ2

OPTIMIZED RAYLEIGH-RITZ METHODQ3

ORTHOTROPIC PLATEQ2

VARIABLE THICKNESSQ3

Abstract

This paper investigates symmetrical BUCKLING of orthotropic circular and annular plates of continuous VARIABLE THICKNESS. Uniform compression loading is applied at the plate outer boundary. Thickness varies linearly along radial direction. Inner edge is free, while outer edge has different boundary conditions: clamped, simply and elastically restraint against rotation. The OPTIMIZED RAYLEIGH-RITZ METHOD is applied for BUCKLING analysis. In this method, a polynomial function that is based on static deformation of orthotropic circular plates in bending is used. Also, by employing an exponential parameter in deformation function, eigenvalue is minimized in respect to that parameter. The advantage of this procedure is simplicity in comparison with other methods, while whole algorithm for solution can be coded for computer programming. The effect of variation of radius, thickness, different boundary conditions, ratio of radial Young Modulus to circumferential one, ratio of outer radius to inner one in annular plates on critical BUCKLING coefficient are investigated. The obtained results show that in plate with identical thickness, increasing of outer radius decreases the critical BUCKLING coefficient. In addition increasing of thickness of the plates results in increase of critical BUCKLING coefficient.

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APA: Copy

FARHATNIA, F., & GHOL SHAH, A.. (2008). INVESTIGATION ON BUCKLING OF ORTHOTROPIC CIRCULAR AND ANNULAR PLATES OF CONTINUOUSLY VARIABLE THICKNESS BY OPTIMIZED RITZ METHOD. JOURNAL OF SIMULATION AND ANALYSIS OF NOVEL TECHNOLOGIES IN MECHANICAL ENGINEERING (JOURNAL OF SOLID MECHANICS IN ENGINEERING), 1(2), 31-40. SID. https://sid.ir/paper/171463/en

Vancouver: Copy

FARHATNIA F., GHOL SHAH A.. INVESTIGATION ON BUCKLING OF ORTHOTROPIC CIRCULAR AND ANNULAR PLATES OF CONTINUOUSLY VARIABLE THICKNESS BY OPTIMIZED RITZ METHOD. JOURNAL OF SIMULATION AND ANALYSIS OF NOVEL TECHNOLOGIES IN MECHANICAL ENGINEERING (JOURNAL OF SOLID MECHANICS IN ENGINEERING)[Internet]. 2008;1(2):31-40. Available from: https://sid.ir/paper/171463/en

IEEE: Copy

F. FARHATNIA, and A. GHOL SHAH, “INVESTIGATION ON BUCKLING OF ORTHOTROPIC CIRCULAR AND ANNULAR PLATES OF CONTINUOUSLY VARIABLE THICKNESS BY OPTIMIZED RITZ METHOD,” JOURNAL OF SIMULATION AND ANALYSIS OF NOVEL TECHNOLOGIES IN MECHANICAL ENGINEERING (JOURNAL OF SOLID MECHANICS IN ENGINEERING), vol. 1, no. 2, pp. 31–40, 2008, [Online]. Available: https://sid.ir/paper/171463/en

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