期刊
MECHANICAL SYSTEMS AND SIGNAL PROCESSING
卷 158, 期 -, 页码 -出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ymssp.2021.107739
关键词
Beam-tendon system; Free vibration analysis; Euler?Bernoulli beam; Frequency loci veering; Frequency-loading diagram
资金
- European Community's Horizon 2020 Program through the project Shape Adaptive Blades for Rotorcraft Efficiency (SABRE) [723491]
- H2020 Societal Challenges Programme [723491] Funding Source: H2020 Societal Challenges Programme
This paper investigates the free vibration and stability analysis of a system consisting of an Euler-Bernoulli beam axially loaded by a tendon. The impact of the number and location of attachment points on the frequency-loading diagram of the beam-tendon system is explored for the first time. The study also reveals that the critical force of the system with intermittently attached tendon is higher than that of a system with no attachment points.
Free vibration and stability analysis of the system consisting of the Euler-Bernoulli beam axially loaded by a tendon is studied in the paper. The tendon is attached to the cantilever beam at the tip as well as in several spanwise locations using mechanical attachment points. This novel beam-tendon system is modelled using a set of partial differential equations and the coupling between the beam and the tendon is ensured by the boundary and continuity conditions. Computational free vibration analysis is conducted using a boundary value problem solver and the results are thoroughly experimentally validated using a bench-top experiment. In particular, the effect of the number of the attachment points and their location on the frequency-loading diagram of the beam-tendon system is investigated for the first time. It is found that the applied axial load causes a frequency shift of beam-dominated natural frequencies, and frequency loci veering between beam dominated and tendon-dominated modes. Both of these features are shown to be dependent on a number and location of the attachment points. In addition, the effect of the attachment points on the structural stability of the system is numerically studied and it is observed that the critical force of the system with the intermittently attached tendon is always higher than for the system with no attachment points. (c) 2021 Elsevier Ltd. All rights reserved.
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