Functionally Graded Materials (FGMs) present numerous advantages containing improved stress distribution, higher fracture toughness, enhanced thermal resistance, and low stress intensity factors that introduce them noticeable option in various engineering application. Recently FGMs are extensively used in micro/nano structures such as thin films, microswitches, and nano-electromechanical systems. In thispaper the nonlocal buckling of FG nanobeams embedded in an elastic medium with considering surface effects has been studied. The governing equations are derived using Hamilton’s principle. Resulting system of ordinary differentialequations is solved analytically. The influences of the FG nanobeam length, volume fraction index and nonlocal parameter on the buckling of the FG nanobeams are discussed in detail. The results express that surface elasticity and residual surface tension influence the buckling performance of FG nanobeams and with increasing the ratio of surface area to bulk at nano-scale, the influence of surface energy becomes more significant.
کلید واژگان :Functionally Graded Materials, Nonlocal Elasticity, Surface Effect, Elastic Medium, Axial Bulking
ارزش ریالی : 600000 ریال
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