Elastoplastic stress analysis for cylindrical shell with flat strip imperfection |
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| Authors: | Xin-Tang Wang and Zhan-Xin Mei |
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| Institution: | (1) Qingdao Institute of Architectural Engineering, China;(2) Xi'an Institute of Metallurgy and Construction Engineering, China |
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| Abstract: | Based on unequidistant B-spline function, generalized spline subdomain displacement mode of rotational shell is obtained by taking double-direction interpolation of spline. The elastoplastic constitutive equation of shells is established by using the endochronic theory.According to the initial deflection theory of shells, the elastoplastic stress analysis of cylindrical shells with flat strip geometrical imperfection is studied. Numerical results show that the geometrical imperfection has a great effect on the stress distribution of shells. |
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| Keywords: | flat strip geometrical imperfection generalized spline subdomain approach cylindrical shells |
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