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Vibration response of a sandwich higher-order micro beam based on shear and normal deformation theory on Kerr elastic foundation with thickness stretching effect | ||
| Mechanics of Advanced Composite Structures | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 27 فروردین 1404 اصل مقاله (2.53 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22075/macs.2025.35667.1749 | ||
| نویسندگان | ||
| Seyed Amir Sajadian1؛ Mehdi Mohammadimehr* 2؛ Mohsen Irani Rahaghi1 | ||
| 1Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Ghotb Ravandi Blvd., Kashan, Iran | ||
| 2Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran | ||
| تاریخ دریافت: 28 مهر 1403، تاریخ بازنگری: 23 اسفند 1403، تاریخ پذیرش: 27 فروردین 1404 | ||
| چکیده | ||
| The novelty of this study is to consider the vibration analysis of a sandwich structure using SNDBT with a porous core and various reinforcement materials, including CNRs, GPLs, and CNTs by considering size effect based on MCST or NSGT on various elastic foundation such as Winkler, Pasternak, and Kerr, simultaneously. Also, each layer in the microbeam has different mechanical properties as a function of temperature. The governing equations of motion are derived using Hamilton’s principle and the energy approach by considering variational method, and then these equations are solved using Navier's method. The results are compared with those recently published by other scientists. The purpose of this study is to present a comprehensive and efficient innovative analytical framework for understanding the vibration behavior of a sandwich micro-beams with different cores and reinforcements, and types of elastic foundation. In the higher-order shear and normal deformation theory by applying the stretching functions, the proposed model offers advantages that can increase the computational efficiency. In addition, a comprehensive parametric study is carried out to evaluate the effect of various properties, including porosity distributions, small scale parameters, different elastic foundations, thickness, axial wave number, small scale theories, volume fraction and different reinforcements such as GPLs, CNTs and CNRs. It is concluded that GPLs have the highest frequency, and CNRs have the lowest frequency. Also, by an increase in the volume fraction of the reinforcements, the natural frequency of the sandwich micro beam increases for GPLs by 10%, the CNTs by 7%, and the CNRs by 4%.The current study shows that considering of elastic foundation for a beam has been demonstrated to result in an increase in the frequencies. It decreases by 24.8% when FG-OO is compared to FG-UU. The sandwich beams are compared to without reinforcement. | ||
| کلیدواژه‌ها | ||
| Vibration responses؛ Shear and normal deformation theory؛ MCST/NSGT؛ Kerr elastic foundation؛ Thickness stretching effect | ||
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آمار تعداد مشاهده مقاله: 25 تعداد دریافت فایل اصل مقاله: 60 |
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