Application of nonlocal continuum theory to the primary resonance analysis of an axially loaded nano beam under time delay control
| Autor: | Wenquan Wang, Chun-Xia Liu, Yan Yan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Applied Mathematics Modulus 02 engineering and technology Mechanics 01 natural sciences Vibration Nonlinear system 020303 mechanical engineering & transports 0203 mechanical engineering Control theory Modeling and Simulation 0103 physical sciences Nano Wavenumber Axial symmetry 010301 acoustics Beam (structure) |
| Zdroj: | Applied Mathematical Modelling. 85:124-140 |
| ISSN: | 0307-904X |
| DOI: | 10.1016/j.apm.2020.03.039 |
| Popis: | The paper is concerned with the nonlinear primary resonance of nano beams with axial load under the velocity time delay control. In order to have a deep insight into the system, the amplitude frequency response curve of the system is firstly obtained using the multiple scales method. The effects of the control gains and time delays on the system stability are then investigated. The analyses illustrated that both delay feedback gain coefficient and velocity time delay control can mitigate the system vibrations properties (e.g. hardening nonlinearity, resonance amplitude and the corresponding width) to an excellent level. The nonlinear primary resonance of nano beam is also discussed with the influences of small scale effect, axial initial load, wave number, Winkler foundation modulus and the ratio of the length to the diameter. This paper establishes the relationship between the time delay controller and vibration properties of a nano beam system which provides the guidance for applying time delayed active control for different types of nano devices in engineering practices. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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