Viscoelastic effects on nonlinear dynamics of microplates with fluid interaction based on consistent couple stress theory
- سال انتشار: 1400
- محل انتشار: مجله مکانیک کاربردی محاسباتی، دوره: 52، شماره: 3
- کد COI اختصاصی: JR_JCAM-52-3_002
- زبان مقاله: انگلیسی
- تعداد مشاهده: 246
نویسندگان
Department of Mechanical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran
School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
چکیده
In this study, the vibrations of a viscoelastic microplate in incompressible still fluid are investigated. The microplate is supposed simply supported in stationary fluid and made of viscoelastic material that follow the Leaderman viscoelastic model The fluid inertial effects as well as fluid damping on microplate vibration are also studied by applying three dimensional aerodynamic theory. The added mass values are obtained for various aspect ratios of the microplate and compared with available models. The non-classic stress and couple-stress tensors are calculated based on consistent couple stress theory and Leaderman integral. The resultant virtual works inserted in Hamilton’s principle and the governing equations of motion are derived. These coupled equation are simplified by Galerkin method and solved using harmonic balance analytical method. The results show that considering the added mass effects reduces the microsystem nonlinearity.کلیدواژه ها
microplate, fluid effects, added mass, consistent couple stress, Viscoelasticاطلاعات بیشتر در مورد COI
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