The Damping Effect on Critical Values of Nonconservative Loads
| Autor: | V. P. Chirkov, Olga V. Novikova, V. P. Radin, V. N. Shchugorev, A. V. Shchugorev |
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| Rok vydání: | 2020 |
| Předmět: |
Physics
Cantilever Double pendulum Mechanical Engineering Flow (psychology) 02 engineering and technology Mechanics Dissipation 01 natural sciences Industrial and Manufacturing Engineering Mechanical system 020303 mechanical engineering & transports 0203 mechanical engineering Distributed parameter system Kelvin–Voigt material 0103 physical sciences Supersonic speed Safety Risk Reliability and Quality 010301 acoustics |
| Zdroj: | Journal of Machinery Manufacture and Reliability. 49:122-128 |
| ISSN: | 1934-9394 1052-6188 |
| Popis: | A systematic study of the effect of energy dissipation on critical nonconservative loads within the stability calculation is carried out. Some classical nonconservative elastic stability problems are considered: the stability of a linear form of equilibrium of a double pendulum under the action of a follower force, the stability of a cantilever beam compressed by a follower force (Beck’s problem), and the stability of a flat panel in a supersonic gas flow. The dependences of critical loads on the damping parameters are built, and the conditions of mechanical system stabilization and destabilization are determined for the cases when damping coefficients vary over a wide range and for various ratios. The external and internal frictions (according to the Voigt model) are considered for the distributed parameter systems. Conclusions about the effect of various types of energy dissipation on the critical values of nonconservative load parameters and about the conditions of nonconservative system destabilization due to the energy dissipation are formulated. |
| Databáze: | OpenAIRE |
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