The linear-elastic stiffness matrix model analysis of pre-twisted Euler-Bernoulli beam

Ying Huang, Haoran Zou, Changhong Chen*, Songlin Bai, Yao Yao, Leon M. Keer

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Based on the finite element method of traditional straight Euler-Bernoulli beams and the coupled relations between linear displacement and angular displacement of a pre-twisted Euler-Bernoulli beam, the shape functions and stiffness matrix are deduced. Firstly, the stiffness of pre-twisted Euler-Bernoulli beam is developed based on the traditional straight Euler-Bernoulli beam. Then, a new finite element model is proposed based on the displacement general solution of a pre-twisted Euler-Bernoulli beam. Finally, comparison analyses are made among the proposed Euler-Bernoulli model, the new numerical model based on displacement general solution and the ANSYS solution by Beam188 element based on infinite approach. The results show that developed numerical models are available for the pre-twisted Euler-Bernoulli beam, and which provide more accurate finite element model for the numerical analysis. The effects of pre-twisted angle and flexural stiffness ratio on the mechanical property are investigated.

Original languageEnglish (US)
Pages (from-to)617-629
Number of pages13
JournalStructural Engineering and Mechanics
Volume72
Issue number5
DOIs
StatePublished - Jan 1 2019

Keywords

  • Euler-Bernoulli beam
  • Parametric analysis
  • Pre-twisted
  • Stiffness matrix

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanics of Materials
  • Mechanical Engineering

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