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Effect of Vertex Angle on Elastic-Plastic Stability of a Steel Open Conical Shell

فصلنامه مکانیک جامد، دوره: 12، شماره: 4
Year: 1399
COI: JR_JSMA-12-4_005
Language: EnglishView: 71
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H Shokrollahi - Department of Mechanical Engineering, Faculty of Engineering, Kharazmi University, Tehran, Iran


In this paper, the stability of a conical shell panel in elastic-plastic domain is considered. The shell is made of an isotropic material (۳۱۶L steel) with linear work hardening behavior. The shell is placed on simply supported end constraints and the acting loads are in the form of longitudinal compressive force and lateral pressure. The incremental Prandtl-Reuss plastic flow theory and von Mises yield criterion are used in the analysis. The problem is formulated based on classical shell theory and nonlinear geometrical strain-displacement relations are assumed. The stability equations are derived using the principle of the stationary potential energy. Using Ritz method the equations are solved and the numerical results obtained for different values of semi vertex and subtended angles. The obtained results show that there is a distinct semi vertex angle in which the shell has the best stability conditions. Also, there will be a limiting condition for the semi vertex angels beyond which the instability will not occur.


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Shokrollahi, H,1399,Effect of Vertex Angle on Elastic-Plastic Stability of a Steel Open Conical Shell,

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  • Bushnell D., 1982, Plastic buckling of various shells, Jornal of ...
  • Jaskula L., Zielnica J., 2011, Large displacement stability analysis of ...
  • Kouchakzadeh M.A., Shakouri M., 2015, Analytical solution for axisymmetric buckling ...
  • Lee W.S., Lin C.F., Liu T.J., 2006, Strain rate dependence ...
  • Naderi A.A., Rahimi G.H., Arefi M., 2014, Influence of fiber ...
  • Paczos P., Zielnica J., 2008, Stability of orthotropic elastic–plastic open ...
  • Shakouri M., Spagnoli A., Kouchakzadeh M.A., 2016, Effects of imperfection ...
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