finite element formulation for stability and free vibration analysis of timoshenko beam
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2013
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Abstract
A two-node element is suggested for analyzing the stability and free vibration of Timoshenko beam. Cubic displacement polynomial and quadratic rotational fields are selected for this element. Moreover, it is assumed that shear strain of the element has the constant value. Interpolation functions for displacement field and beam rotation are exactly calculated by employing total beam energy and its stationing to shear strain. By exploiting these interpolation functions, beam elements' stiffness matrix is also examined. Furthermore, geometric stiffness matrix and mass matrix of the proposed element are calculated by writing governing equation on stability and beam free vibration. At last, accuracy and efficiency of proposed element are evaluated through numerical tests. These tests show high accuracy of the element in analyzing beam stability and finding its critical load and free vibration analysis.
| Reference Key |
moallemi-oreh2013advancesfinite
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|---|---|
| Authors | ;Abbas Moallemi-Oreh;Mohammad Karkon |
| Journal | malaria journal |
| Year | 2013 |
| DOI |
10.1155/2013/841215
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| URL | |
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