Construction of beam elements considering von Karman nonlinear strains using B-spline wavelet on the interval

摘要

The current paper proposes the formulation of beam elements using B-spline wavelet on the interval based wavelet finite element method by incorporating von Karman nonlinear strains. Formulation is proposed for both Euler-Bernoulli beam theory and Timoshenko beam theory. A background cell based Gauss quadrature is proposed for numerical integration. Numerical examples are solved for transverse deflections and stresses in axial direction, and are compared with the existing converged results from finite element method. The issues of membrane and shear locking for the proposed elements are examined and solution techniques are suggested to overcome the issues. (C) 2018 Elsevier Inc. All rights reserved.