کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
500484 | 863091 | 2006 | 19 صفحه PDF | دانلود رایگان |
In this paper a finite element for the non-linear analysis of two-dimensional beams and axisymmetric shells is presented. The element uses classical thin shell assumptions (no transverse shear strains). The main feature of the element is that it has no rotational degrees of freedom. Curvatures are computed using geometrical information from the patch of three elements formed by the main element and the two neighbor (adjacent) elements. Special attention is devoted to non-smooth geometries and branching shells. An elastic–plastic material law is considered. Large strains are treated using a logarithmic strain measure and a through-the-thickness numerical integration of the constitutive equations. Several examples are presented including linear problems to study convergence properties, and non-linear problems for both elastic and elastic–plastic materials and large strains.
Journal: Computer Methods in Applied Mechanics and Engineering - Volume 195, Issues 41–43, 15 August 2006, Pages 5297–5315