SURFACE ENERGY EFFECTS ON FREQUENCY ANALYSIS OF DW PIEZOELECTRIC CYLINDRICAL NANOSHELL
محل انتشار: دومین کنفرانس بین المللی فناوری های نوین در علوم
سال انتشار: 1397
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 429
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شناسه ملی سند علمی:
CMTS02_157
تاریخ نمایه سازی: 29 تیر 1398
چکیده مقاله:
In this paper, vibration analysis of double walled piezoelectric cylindrical nanoshell (DWPECNS) subjected to Visco-Pasternak medium and van der Waals force is investigated using Gurtin–Murdoch surface/interface theory, Donnell s theory, Hamilton’s and also the assumed mode method. The effects of the surface energy and length of nanoshell and piezoelectric layer, boundary condition and van der Waals (vdW) force on the natural frequencies of DWPECNS is studied. Also, the results are shown that in the nanoscale system is considered surface effects (SE) without considering the surface density (SD), we will have the maximum frequency. As a result, controlling the frequency of the system in this case is essential and it is quite clear that considering the effects of the surface energy (SE) will have a remarkably effect in the natural frequency of the piezo-viscoelastic nanoshell.
کلیدواژه ها:
Double walled piezoelectric nanoshell ، Surface elasticity ، Gurtin–Murdoch surface/interface theory ، Visco-Pasternak medium ، Donnell s theory ، van der Waals force.
نویسندگان
Sayyid H. Hashemi Kachapi
Department of Mechanical Engineering, Babol Noshirvani University of Technology, P.O.Box۴۸۴, Shariati Street, Babol, Mazandaran۴۷۱۴۸-۷۱۱۶۷, Iran
Morteza Dardel
Department of Mechanical Engineering, Babol Noshirvani University of Technology, P.O.Box۴۸۴, Shariati Street, Babol, Mazandaran۴۷۱۴۸-۷۱۱۶۷, Iran
Hamidreza Mohamadi daniali
Department of Mechanical Engineering, Babol Noshirvani University of Technology, P.O.Box۴۸۴, Shariati Street, Babol, Mazandaran۴۷۱۴۸-۷۱۱۶۷, Iran
Alireza Fathi
Department of Mechanical Engineering, Babol Noshirvani University of Technology, P.O.Box۴۸۴, Shariati Street, Babol, Mazandaran۴۷۱۴۸-۷۱۱۶۷, Iran