Geometric Nonlinear Stiffness Matrix Based on Tension-Compression and Torsion-Warping Interpolation Function
LIU Jian~
DOI:10.11835/j.issn.1674-4764.2004.02.012
Received ,Revised December 20, 2003, Accepted , Available online July 01, 2015
Volume ,2004,Pages 48-53
- Abstract
The conception and calculation formula on torsion-warping stability function is brought forward and the torsion-warping tangent stiffness matrix of bi-axisymmetric open thin wall and lightweight beam-column element is derived for the first time, based on torsion-warping stability interpolation function. At the same time, the spatial geometric tangent stiffness matrixes for beam-column element of lightweight steel structure based on tension-compression and torsion warping stability interpolation function are presented as well.