THE PRE- TWISTED THIN- WALLED BEAM ELEMENT STIFFNESS MATRIX CONSIDERING THE SAINT- VENANT WARPING DEFORMATION

Chen Changhong; Huang Ying; Shan Jian

doi:10.13204/j.gyjz201204013

Volume 42 Issue 4

Dec. 2014

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Chen Changhong, Huang Ying, Shan Jian. THE PRE- TWISTED THIN- WALLED BEAM ELEMENT STIFFNESS MATRIX CONSIDERING THE SAINT- VENANT WARPING DEFORMATION[J]. INDUSTRIAL CONSTRUCTION, 2012, 42(4): 60-64. doi: 10.13204/j.gyjz201204013

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THE PRE- TWISTED THIN- WALLED BEAM ELEMENT STIFFNESS MATRIX CONSIDERING THE SAINT- VENANT WARPING DEFORMATION

doi: 10.13204/j.gyjz201204013

1.
1. Institute of Mechanics and Civil Engineering,Northwestern Polytechnical University,Xi'an 710129,China;
2.
2. College of Civil Engineering,Xi'an University of Architecture and Technology,Xi'an 710055,China;
3.
3. College of Civil Engineering,Southeast University,Nanjing 210096,China

Received Date: 2011-11-23
Publish Date: 2012-04-20

Abstract

Abstract

Based on the traditional mechanical model of thin-walled straight beam,it is conducted a systematic analysis and research on the pre-twisted thin-walled beam finite element numerical model. Firstly,based on the geometric deformation differential relationship,it is deduced the pre-twisted thin-walled beam Saint-Venant warping strain. According to traditional thin-walled straight beam finite element mechanical model,it is also established its finite element stiffness matrix considering the Saint-Venant warping deformations. Finally,by calculating the pre- twisted elliptical section beam example,and contrasting three-dimensional solid finite element using ANSYS,the comparative analysis results show that pre-twisted thin-walled beam element stiffness matrix considering Saint-Venant warping deformation has a good accuracy.
- pre-twisted,
- thin-walled beam,
- Saint-Venant,
- warping deformation,
- stiffness matrix,
- ANSYS

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References(10)

References

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