周期的波を有する円筒の軸圧潰に関する数値解析的研究

概要

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In this paper, elastoplastic nonlinear behaviors of circular tubes with grooved surface subjected to axial compression are studied by using finite element method. The effect of grooves is to control the deformation pattern and to decrease the fluctuation in the load-displacement curve for circular tubes. It is found from numerical results that the deformation mode corresponding to the corrugation can be classified into aisymmetric mode and non-symmetrical mode, and the axisymmetric mode is classified into progressive crush mode, in which compressive force vibrates with the wrinkles forming one after another, and simultaneous crush mode, in which compressive force increases uniformly. A mode classification chart is produced for various combination of wavelength 2λ and wave-altitude α.
一般社団法人日本機械学会の論文
2006-10-25