Monotonous, symmetric, and nonsymmetric patterns of porous core in vibration study of nano-composite sandwich plate bonded by piezoelectric sheets
محل انتشار: مجله مکانیک کاربردی محاسباتی، دوره: 53، شماره: 3
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 195
فایل این مقاله در 34 صفحه با فرمت PDF قابل دریافت می باشد
- صدور گواهی نمایه سازی
- من نویسنده این مقاله هستم
استخراج به نرم افزارهای پژوهشی:
شناسه ملی سند علمی:
JR_JCAM-53-3_010
تاریخ نمایه سازی: 17 مهر 1401
چکیده مقاله:
This paper deals with the free vibrations of a ۵-layer sandwich plate consisting of a sutured porous material core. Two randomly oriented straight single-walled carbon nanotube (CNT) reinforced composites and face sheets manufactured of piezoelectric material that is subjected to an external electric voltage, are placed on a Visco-Pasternak foundation. The relationship between strain and stress in the core is expressed by considering the pore fluid pressure based on the Biot theory, and for pore distribution along the core thickness, three uniform, symmetric and nonsymmetric patterns are considered. A quasi-۳D sinusoidal shear deformation theory which that couples the effects of shear strain and normal deformation without the need for any shear correction factor which uses Hamilton’s principle and Navier’s method is used to derive the governing equations of the sandwich structure for the simply supported case. Effects of different parameters on the natural frequencies of the plate are studied including layer thickness ratio, porosity parameter, porosity distribution pattern, pores compressibility, the volume fraction of CNTs and external voltage. The maximum frequency in different modes could be an important design factor that is calculated based on the type of the porosity distribution. Controlling the material properties based on specific needs is the most important advantage of the ۵-layer sandwich structure. This paper introduces sandwich panels with porous cores, nanocomposite layers and piezoelectric overlays for the first time which is analyzed to determine system vibration frequencies under external voltage and by changing various parameters with emphasis on different porosity distributions. The frequency of monotonous distribution was ۴% higher than symmetric and asymmetric distributions for a constant porosity.
کلیدواژه ها:
نویسندگان
M. Pakize
Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran.
Z. Khoddami Maraghi
Faculty of Engineering, Mahallat Institute of Higher Education, Mahallat, Iran.
M. Irani Rahaghi
Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran.
S. Niknejad
Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran.
A. Ghorbanpour Arani
Department of Solid Mechanics, Faculty of Mechanical Engineering, University of Kashan, Kashan, Iran.
مراجع و منابع این مقاله:
لیست زیر مراجع و منابع استفاده شده در این مقاله را نمایش می دهد. این مراجع به صورت کاملا ماشینی و بر اساس هوش مصنوعی استخراج شده اند و لذا ممکن است دارای اشکالاتی باشند که به مرور زمان دقت استخراج این محتوا افزایش می یابد. مراجعی که مقالات مربوط به آنها در سیویلیکا نمایه شده و پیدا شده اند، به خود مقاله لینک شده اند :