Deflection analysis of composite micro-beam on elastic foundation by strain gradient theory

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Jafari Mehrabadi Saeed; NezamAbadi Alireza; Moayeedi Ehsan

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Journal Paper

Paper Information

Journal: Mechanics of Advanced and Smart Materials journal Year:2022 | Volume:2 | Issue:1 Page(s): 94-107

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Information Journal Paper

Title

Deflection analysis of composite micro-beam on elastic foundation by strain gradient theory

Author(s)

Jafari Mehrabadi Saeed | NezamAbadi Alireza | Moayeedi Ehsan | Issue Writer Certificate

Keywords

strain gradient theory

Functionally graded material

micro-beam

Elastic foundation

Abstract

In this article bending analysis of composite Euler-Bernoulli micro-beam made of Functionally graded materials resting on Elastic foundation by strain gradient theory has been studied. The material properties of structure have been assumed by Reddy’s power law model such as the bottom layer and top layer being ceramic and metal material respectively. At first, by using the assumptions of elasticity strain gradient theory and calculating the total potential energy of system after determining the work of external distributed load by using the Hamilton's principal the equations of motion have been derived. Note that the work down by the Winkler Elastic foundation is considered. Because the solutions of mentioned equations are not possible by analytical method, the equations have been solved by generalized differential quadrature method in simply supported boundary conditions. By comparing the answers of problem with other published references, we confident form the obtained results. At the end, effect of material length scale and power law index coefficient of Functionally graded materials and stiffness of Elastic foundation on deflection of micro-beam has been studied.

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