این سایت در حال حاضر پشتیبانی نمی شود و امکان دارد داده های نشریات بروز نباشند
International Journal of Engineering، جلد ۲۶، شماره ۱۲، صفحات ۱۵۰۵-۱۵۱۴
عنوان فارسی
چکیده فارسی مقاله
کلیدواژه‌های فارسی مقاله
عنوان انگلیسی Thermo-Elastic Damping in Nano-beam Resonators Based on Nonlocal Theory
چکیده انگلیسی مقاله In this article thermoelastic damping in nano-beam resonators is investigated based on nonlocal theory of elasticity and the Euler-Bernoulli beam assumptions. The governing equation of deflection of the beam is obtained from shear and moment resultants and stress–strain relationship of the nonlocal elasticity model and also the governing equations of thermoelastic damping are established by using, two dimensional non-Fourier heat conduction with one relaxation time based on continuum theory frame. Free vibration of the nano-beam resonators is analyzed using Galerkin reduced order model formulation for the first mode of vibration. In the present investigation a clamped-clamped nano-beam with isothermal boundary conditions at both ends is studied. This nonlocal nano-beam model incorporates the length scale parameter (nonlocal parameter) which can capture the small scale effect. The obtained results are compared with the numerical results of the classical thermoelastic models. Thermoelastic damping effects on the damping ratio are studied for the various nano-beam thicknesses and ambient temperatures. In addition to, the study includes computations for different values of nonlocal theory parameter. The results show that with increasing the amount of nonlocal parameter and also with decreasing the length of the nano-beam, difference of the results of classical and nonlocal theory increases.
کلیدواژه‌های انگلیسی مقاله
نویسندگان مقاله ali khanchehgardan |
Mechanical Engineering Department, Urmia University

Ali Shah-Mohammadi-Azar |
Mechanical Engineering Department, Urmia University

Ghader rezazadeh |
mechanical engineering, Urmia university

rasoul shabani |
mechanical engineering, Urmia university

نشانی اینترنتی http://www.ije.ir/article_72221_35c612c27ede9a9685656f6289c80aee.pdf
فایل مقاله اشکال در دسترسی به فایل - ./files/site1/rds_journals/409/article-409-2062820.pdf
کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده
نوع مقاله منتشر شده
برگشت به: صفحه اول پایگاه   |   نسخه مرتبط   |   نشریه مرتبط   |   فهرست نشریات