A locking-free quadratic nurbs-based isogeometric formulation for plates analysis

Thai Hoang Chien; Nguyen Xuan Hung; Nguyen Thoi Trung

2 (1) 2012

A locking-free quadratic nurbs-based isogeometric formulation for plates analysis

Author - Affiliation:

Thai Hoang Chien - Ton Duc Thang University HCM , Vietnam

Nguyen Xuan Hung - University of Science HCM , Vietnam

Nguyen Thoi Trung - University of Science HCM , Vietnam

Corresponding author: Nguyen Thoi Trung - kim.npt@ou.edu.vn

Abstract

A new Reissner-Mindlin plate formulation based on a quadratic NURBS-based isogeometric is presented. In order to avoid the transverse shear locking and to improve the accuracy of the present formulation, the quadratic NURBS-based isogeometric is incorporated with the Mixed Interpolation of Tensorial Components (MITC) technique to give a so-called quadratic NURBS-based isogeometric Mixed Interpolation of Tensorial Components method (Nurbs-MITC9). Numerical results of the proposed formulation show excellent performance compared to other available approaches.

Keywords

Isogeometric analysis; Non-Uniform Rational B-splines (NURBS); MITC; Reissner-Mindlin plate.

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