Buckling of axial compressed cylindrical shells with stepwise variable thickness

Fan, H.G.; Chen, Z.P.; Feng, W.Z.; Zhou, F.; Shen, X.L.; Cao, G.W.

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자료유형: 학술저널

저자정보: Fan, H.G. (Institute of Process Equipment, Zhejiang University) Chen, Z.P. (Institute of Process Equipment, Zhejiang University) Feng, W.Z. (Institute of Process Equipment, Zhejiang University) Zhou, F. (Institute of Process Equipment, Zhejiang University) Shen, X.L. (Institute of Process Equipment, Zhejiang University) Cao, G.W. (Institute of Process Equipment, Zhejiang University)

저널정보: 테크노프레스 Structural engineering and mechanics : An international journal Structural engineering and mechanics : An international journal 제54권 제1호

발행연도: 2015.1

수록면: 87 - 103 (17page)

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This paper focuses on an analytical research on the critical buckling load of cylindrical shells with stepwise variable wall thickness under axial compression. An arctan function is established to describe the thickness variation along the axial direction of this kind of cylindrical shells accurately. By using the methods of separation of variables, small parameter perturbation and Fourier series expansion, analytical formulas of the critical buckling load of cylindrical shells with arbitrary axisymmetric thickness variation under axial compression are derived. The analysis is based on the thin shell theory. Analytic results show that the critical buckling load of the uniform shell with constant thickness obtained from this paper is identical with the classical solution. Two important cases of thickness variation pattern are also investigated with these analytical formulas and the results coincide well with those obtained from other authors. The cylindrical shells with stepwise variable wall thickness, which are widely used in actual engineering, are studied by this method and the analytical formulas of critical buckling load under axial compression are obtained. Furthermore, an example is presented to illustrate the effects of each strake's length and thickness on the critical buckling load.

#cylindrical shells #tanks #stepwise variable wall thickness #axial compression #critical buckling load

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