%0 Journal Article
%T Nonlinear Finite Element Analysis of Bending of Straight Beams Using hp-Spectral Approximations
%J Journal of Solid Mechanics
%I Islamic Azad University - Arak Branch
%Z 2008-3505
%A Ranjan, R
%D 2011
%\ 03/30/2011
%V 3
%N 1
%P 96-113
%! Nonlinear Finite Element Analysis of Bending of Straight Beams Using hp-Spectral Approximations
%K spectral/hp method
%K Timoshenko Beam Theory
%K Euler-Bernoulli beam theory
%K Nodal expansions
%K Displacement and mixed finite element models
%R
%X Displacement finite element models of various beam theories have been developed using traditional finite element interpolations (i.e., Hermite cubic or equi-spaced Lagrange functions). Various finite element models of beams differ from each other in the choice of the interpolation functions used for the transverse deflection w, total rotation φ and/or shear strain γxz, or in the integral form used (e.g., weak form or least-squares) to develop the finite element model. The present study is concerned with the development of alternative beam finite elements using hp-spectral nodal expansions to eliminate shear and membrane locking. Both linear and non-linear analysis are carried out using both displacement and mixed finite element models of the beam theories studied. Results obtained are compared with both analytical (series) solutions and non-linear finite element solutions from literature, and excellent agreement is found for all cases.
%U http://jsm.iau-arak.ac.ir/article_514402_2ad9d83b9ba030e504a0d4e604a7fc73.pdf