scholarly journals MATERIAL PROPERTIES AND BUCKLING BEHAVIOR OF COLD-FORMED THIN-WALLED STEEL MEMBERS UNDER ELEVATED TEMPERATURES DUE TO FIRE

2004 ◽  
Vol 69 (582) ◽  
pp. 155-162
Author(s):  
Koji HANYA ◽  
Ryoichi KANNO ◽  
Shosuke MORINO ◽  
Mamoru KOHNO
Keyword(s):  
Material Properties ◽  
Elevated Temperatures ◽  
Steel Members ◽  
Buckling Behavior ◽  
Thin Walled

Numerical investigation on the buckling behavior of damaged steel members constrained by outer tubes

Structures ◽  
2021 ◽  
Vol 34 ◽  
pp. 1068-1079
Author(s):  
Jian Feng ◽  
Shuxuan Ren ◽  
Qian Zhang ◽  
Yixiang Xu ◽  
Jianyu Li ◽  
...  
Keyword(s):  
Numerical Investigation ◽  
Steel Members ◽  
Buckling Behavior

Geometrical Stiffness of Thin-Walled I-Beam Element Based on Rigid-Beam Assemblage Concept

2012 ◽  
Vol 28 (1) ◽  
pp. 97-106 ◽  
Author(s):  
J. D. Yau ◽  
S.-R. Kuo
Keyword(s):  
Stiffness Matrix ◽  
Virtual Work ◽  
Bending Moment ◽  
Beam Element ◽  
Narrow Beam ◽  
Cross Sectional ◽  
Geometric Stiffness ◽  
Buckling Behavior ◽  
Post Buckling ◽  
Thin Walled

ABSTRACTUsing conventional virtual work method to derive geometric stiffness of a thin-walled beam element, researchers usually have to deal with nonlinear strains with high order terms and the induced moments caused by cross sectional stress results under rotations. To simplify the laborious procedure, this study decomposes an I-beam element into three narrow beam components in conjunction with geometrical hypothesis of rigid cross section. Then let us adopt Yanget al.'s simplified geometric stiffness matrix [kg]12×12of a rigid beam element as the basis of geometric stiffness of a narrow beam element. Finally, we can use rigid beam assemblage and stiffness transformation procedure to derivate the geometric stiffness matrix [kg]14×14of an I-beam element, in which two nodal warping deformations are included. From the derived [kg]14×14matrix, it can take into account the nature of various rotational moments, such as semi-tangential (ST) property for St. Venant torque and quasi-tangential (QT) property for both bending moment and warping torque. The applicability of the proposed [kg]14×14matrix to buckling problem and geometric nonlinear analysis of loaded I-shaped beam structures will be verified and compared with the results presented in existing literatures. Moreover, the post-buckling behavior of a centrally-load web-tapered I-beam with warping restraints will be investigated as well.

scholarly journals FE Model Validation and Advanced Analyses of Steel Members with Steel Claddings at Elevated Temperatures

ce/papers ◽  
2021 ◽  
Vol 4 (2-4) ◽  
pp. 1203-1212
Author(s):  
Zhongcheng Ma ◽  
Jarmo Havula ◽  
Attila Joo ◽  
Anita Lendvai
Keyword(s):  
Model Validation ◽  
Elevated Temperatures ◽  
Fe Model ◽  
Steel Members
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