نتایج جستجو برای: natural material

تعداد نتایج: 826167  

Journal: :Energies 2021

Nowadays, Organic Rankine Cycle (ORC) is one of the most promising technologies analyzed for electrical power generation from low-temperature heat such as renewable energy sources (RES), especially solar energy. Because source variation throughout day, additional Thermal Energy Storage (TES) systems can be employed to store surplus saved during daytime, in order use it at nighttime or when mete...

Journal: :IOP Conference Series: Materials Science and Engineering 2018

Journal: :International Journal of Emerging Trends in Engineering Research 2020

Journal: :فصلنامه علمی پژوهشی مهندسی مکانیک جامدات واحد خمینی شهر 0
younes mohammadi assistant professor, department of industrial engineering and mechanical engineering, islamic azad university, qazvin, iran. keivan h safari assistant professor, department of industrial engineering and mechanical engineering, islamic azad university, qazvin, iran. mohsen rahmani phd student, department of industrial engineering and mechanical engineering, islamic azad university, qazvin, iran.

free vibration of sandwich plates with temperature dependent functionally graded (fg) face sheets in various thermal environments is investigated. the material properties of fg face sheets are assumed to be temperature-dependent and vary continuously through the thickness according to a power-law distribution in terms of the volume fractions of the constituents. also, the material properties of...

In this paper, the influence of the elastic foundation on the free vibration and buckling of thin-walled piezoelectric-based functionally graded materials (FGM) cylindrical shells under combined loadings is investigated. The equations of motion are obtained by using the principle of Hamilton and Maxwell's equations and the Navier's type solution used to solve these equations. Material propertie...

The vibration analysis is an important step in the design and optimization of microsensors. In most of the cases, COMSOL software is employed to consider the size-dependency on the dynamic behavior in the MEMS sensors. In this paper, the Modified Couple Stress Theory (MCST) is used to capture the size effect on dynamic behavior in a microsensor with two layers of the silicon and piezoelectric. ...

This study introduces the free vibration analysis of multilayered symmetric sandwich Timoshenko beams, made of functionally graded materials with two edge cracked, using the finite element method and linear elastic fracture mechanic theory. The FG beam consists of 50 layers, located symmetrically to the neutral plane, whose material properties distribution change along the beam thickness, accor...

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