2024 : 4 : 15
Korosh Khorshidi

Korosh Khorshidi

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0002-7321-972X
Education: PhD.
ScopusId: 23970920600
Faculty: Engineering
Address: Arak University
Phone: 086-32625720


Free vibration analysis of an auxetic honeycomb sandwich plate placed at the wall of a fluid tank
Free vibrationFluid-sandwich plate interactionAuxetic honeycomb coreWet fundamental frequencyGalerkin methodFinite element analysis
Journal Ocean Engineering
Researchers Alireza Pakroyan ، Peyman Yousefi ، Korosh Khorshidi ، Mohammad Medhi Najafizadeh ، Alireza Nezamabadi


This paper presents a parametric investigation of the free vibration characteristics of an auxetic honeycomb sandwich plate mounted at the wall of a liquid tank. Frostig's second model is utilized in the core, while first-order shear deformation theory (FSDT) is applied to the face sheets. The honeycomb core is homogenized using one of the newest revised models (Tornabene's model), and the fluid is assumed to be ideal. The governing equations of motion are derived using Hamilton's principle and solved using the Galerkin method. Present solution method, honeycomb core homogenization formula, and mathematical framework for the fluid-sandwich plate interaction are verified using 3D Finite Element Analysis (FEA). Finally, the wet fundamental frequency is investigated with geometric parameters such as the ratio of tank dimensions to the plate length, fluid height from the plate's bottom edge, plate location at the tank wall, and honeycomb cell geometry. According to the results of this study, the thickness of the face sheet and the cell wall enhance the wet fundamental frequency, while the cell aspect ratio decreases it.