Journal
APPLIED MATHEMATICAL MODELLING
Volume 73, Issue -, Pages 303-326Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.apm.2019.04.031
Keywords
Partially distributed follower force; Nonlinear dynamic analysis; Geometrically exact beam formulation
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This paper aims to investigate linear and nonlinear behavior of beams subjected to externally applied partially distributed follower forces. In this investigation, the nonlinear composite beam theory of Hodges is used. The system of nonlinear equations is linearized about the equilibrium, or rest structure state, and the linear system is solved numerically. The effects of follower force position on the behavior of eigenvalues at pre- and post-instability are reported. Additionally, the contours of critical follower force are obtained by changing the position of follower force in span-wise and chord-wise directions. The effects of different parameters such as the length, and position of follower force and the ratios of stiffnesses on the critical follower force as well as the nonlinear limit cycle oscillation (LCO) are reported. The obtained results indicate that the length and the position of the partially distributed follower forces considerably affect the stability of the beam. (C) 2019 Elsevier Inc. All rights reserved.
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