Performance Analyses of Passive Vibration Isolator with Parallel Connection of Quasi-Zero Stiffness and Inerter Dampers
| Autor: | Xiao Zheng, Jiafan Zhang, Huajiang Ouyang, Qinghua Yan, Yu Nanhui, Jian Ping Ye |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
negative stiffness
02 engineering and technology 01 natural sciences lcsh:Technology Damper law.invention lcsh:Chemistry 0203 mechanical engineering law 0103 physical sciences Inerter medicine General Materials Science inerter 010301 acoustics Instrumentation lcsh:QH301-705.5 Fluid Flow and Transfer Processes Physics shock isolation business.industry lcsh:T Process Chemistry and Technology Isolator General Engineering Stiffness Natural frequency Structural engineering Transmissibility (vibration) lcsh:QC1-999 Computer Science Applications Shock (mechanics) 020303 mechanical engineering & transports Vibration isolation displacement transmissibility lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 medicine.symptom business lcsh:Engineering (General). Civil engineering (General) lcsh:Physics passive vibration isolator |
| Zdroj: | Applied Sciences Volume 10 Issue 19 Applied Sciences, Vol 10, Iss 6894, p 6894 (2020) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10196894 |
| Popis: | This paper investigates a type of linear vibration isolator which incorporates two passive devices, negative stiffness elements and an inerter, into the conventional isolator (massstiffnessdamper). Two configurations of the passive devices are considered, respectively: (1) the direct parallel connection of the inerter and the negative stiffness element (2) the series connection of the inerter with the viscous damper, which, together, is then connected with the negative stiffness element in parallel. Numerical evaluations are presented for the isolators subject to base harmonic and shock excitation, in terms of the natural frequency, the displacement transmissibility and shock isolation performance. Compared with other corresponding linear isolators, it is found that in the majority of the excitation situations, the presented isolator with the second configuration has a better performance for some isolator parameter values, that is, the inertance-to-mass ratio, the ratio of negative to positive stiffness and the damping coefficient ratio of the two dampers. |
| Databáze: | OpenAIRE |
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