Geometric Nonlinear Stiffness Matrix Based on Tension-Compression and Torsion-Warping Interpolation Function[J]. Journal of Civil and Environmental Engineering, 2004, 26(2): 48-53.
Geometric Nonlinear Stiffness Matrix Based on Tension-Compression and Torsion-Warping Interpolation Function[J]. Journal of Civil and Environmental Engineering, 2004, 26(2): 48-53. DOI: 10.11835/j.issn.1674-4764.2004.02.012.
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.