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CivilComp Proceedings
ISSN 17593433 CCP: 93
PROCEEDINGS OF THE TENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by:
Paper 255
A CoRotation Shell Element with Material Nonlinearities J. Xu^{1}, K.H. Tan^{1}, Z.X. Li^{2} and C.K. Lee^{1}
^{1}School of Civil and Environmental Engineering, Nanyang Technological University, Singapore
J. Xu, K.H. Tan, Z.X. Li, C.K. Lee, "A CoRotation Shell Element with Material Nonlinearities", in , (Editors), "Proceedings of the Tenth International Conference on Computational Structures Technology", CivilComp Press, Stirlingshire, UK, Paper 255, 2010. doi:10.4203/ccp.93.255
Keywords: corotational approach, vectorial rotational variable, layered model, material nonlinearity, mixed interpolation of tensorial components, discrete shear gap.
Summary
A sixnode curved corotational shell element with layered model is presented. Since the vectorial rotational variables [1,2] are employed in this shell element, the moment corresponding to this new defined rotational variable and the relationship between the vectorial rotational variables and rotational angles are shown in this work. The present element has several features:
The technique of mixed interpolation of tensorial components [3] and discrete shear gap [4] are adopted in this element to circumvent the membrane locking and the shear locking, respectively. The forward Euler algorithm with subincrement technique [5] is used for elastoplastic analyses. Owen's concrete model [6] is adopted in the present shell element for the current version so that this element can be used for reinforced concrete slabs. Five sets of numerical examples are shown to verify the effectiveness and robustness of this element in the shell structures with different geometry (initially flat plate, initially curved in one direction roof, initially curved in two directions shell) and different material constitutions (linear elastic material, functionally graded material, reinforced concrete and elastoplastic material). References
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