فصلنامه
نوع مقاله : مقاله پژوهشی
نویسندگان
1 مهندسی مکانیک/دانشگاه اراک/اراک/ایران
2 گروه مهندسی مکانیک، دانشکده فنی و مهندسی، دانشگاه اراک، اراک، ایران
3 دانشگاه اراک - دانشکده فنی و مهندسی - گروه مهندسی مکانیک
کلیدواژهها
عنوان مقاله English
نویسندگان English
In the present study, the vibrational analysis of a three-layer sandwich plate with an auxetic core under aerodynamic forces with simply supported boundary conditions has been investigated. In this sandwich plate, the middle layer, or the so-called core, is made of auxetic material. The plate is subjected to aerodynamic forces on one side. To reduce the intensity of vibrations in the structure, the plate has been reinforced with carbon nanotubes. For the analysis and modeling of the plate’s vibrations, the modified shear deformation plate theories were employed, and the aerodynamic force exerted by the airflow on the plate was assumed based on first-order piston theory. Using Hamilton's principle, the governing equations for the vibrational behavior of the sandwich plate were derived, and the Galerkin weighted residual method was utilized to solve these equations. To demonstrate the validity of the obtained relationships and the proposed solution method, the results of this study were compared with results published in reputable journals and numerical solutions obtained using the finite element method through commercial software. Finally, the effects of various parameters such as the geometric dimensions of the sandwich plate, the dimensions of the auxetic core, aerodynamic pressure, and the volume fraction of carbon nanotubes on the vibrations of the structure were examined and analyzed.
کلیدواژهها English
