The finite element model research of the pre-twisted thin-walled beam

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Chen, Chang Hong;Zhu, Yan Fei;Yao, Yao;Huang, Ying

  • 투고 : 2015.04.02
  • 심사 : 2015.12.25
  • 발행 : 2016.02.10

초록

Based on the traditional mechanical model of thin-walled straight beam, the paper makes analysis and research on the pre-twisted thin-walled beam finite element numerical model. Firstly, based on the geometric deformation differential relationship, the Saint-Venant warping strain of pre-twisted thin-walled beam is deduced. According to the traditional thin-walled straight beam finite element mechanical model, the finite element stiffness matrix considering the Saint-Venant warping deformations is established. At the same time, the paper establishes the element stiffness matrix of the pre-twisted thin-walled beam based on the classic Vlasov Theory. Finally, by calculating the pre-twisted beam with elliptical section and I cross section and contrasting three-dimensional solid finite element using ANSYS, the comparison analysis results show that pre-twisted thin-walled beam element stiffness matrix has good accuracy.

키워드

pre-twisted;thin-walled;coupling;warping;finite element model

참고문헌

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과제정보

연구 과제 주관 기관 : National Natural Science Foundation of China, Shanxi National Science Foundation of China, Central Universities