TY - JOUR ID - 83736 TI - Viscoelastic effects on nonlinear dynamics of microplates with fluid interaction based on consistent couple stress theory JO - Journal of Computational Applied Mechanics JA - JCAMECH LA - en SN - 2423-6713 AU - Ajri, Masoud AU - Seyyed Fakhrabadi, Mir Masoud AU - Asemani, Hamidreza AD - Department of Mechanical Engineering, Faculty of Engineering, University of Mohaghegh Ardabili, Ardabil, Iran AD - School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran Y1 - 2021 PY - 2021 VL - 52 IS - 3 SP - 394 EP - 407 KW - microplate KW - fluid effects KW - added mass KW - consistent couple stress KW - Viscoelastic DO - 10.22059/jcamech.2021.320034.603 N2 - 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. UR - https://jcamech.ut.ac.ir/article_83736.html L1 - https://jcamech.ut.ac.ir/article_83736_40f5a90d182db02bdd42dad6ffc35dc8.pdf ER -