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RISApproximate analytical solutions to a conservative oscillator using global residue harmonic balance method
In the current research paper, a conservative system comprising of a mass grounded by linear and nonlinear springs in series connection is studied. The equation of motion for the aforementioned system has been derived as ...
بررسی کارایی الگوریتم جستجوی گرانشی در بهینه سازی سازه های ساندویچی تحت بارگذاری طولی با در نظر گرفتن قیدهای تسلیم و کمانش
سازه های ساندویچی سازه هایی هستند که با وجود وزن کم دارای استحکام قابل توجهی می باشند. پانل های ساندویچی با هسته های باز و منشوری گروهی از این سازه ها بوده که دارای ویژگی هایی منحصر به فرد هستند. نام گذاری این پانلها براساس ...
The Effects of Connecting Region Length on the Natural Frequencies of Straight and Non-straight Hetero-junction Carbon Nanotubes
In the present study, the vibrational properties of straight and non-straight hetero-junction carbon nanotubes (HJCNTs) are investigated. The molecular mechanics technique in combination with the finite element method is ...
Free vibration analysis of dissimilar connected CNTs with atomic imperfections and different locations of connecting region
In this paper, the vibrational characteristics of hetero-junction carbon nanotubes (HJCNTs) are investigated using the well-known molecular mechanics approach. The paper contains two main novel parts. In the first part, ...
Axial vibration of hetero-junction CNTs mass nanosensors by considering the effects of small scale and connecting region: An analytical solution
This paper aims to introduce a new nonlocal rod model for studying axial vibrations of hetero-junction CNTs (HJCNTs). The proposed model takes the connecting region of HJCNTs into account and is identically applicable to ...
Lateral vibrations of embedded hetero-junction carbon nanotubes based on the nonlocal strain gradient theory: Analytical and differential quadrature element (DQE) methods
In the current paper, lateral vibrations of embedded hetero-junction carbon nanotubes (HJCNTs) are investigated. HJCNT and its surrounding medium are idealized as two different connected nonlocal strain gradient Rayleigh ...