Thermal postbuckling behavior of size-dependent functionally graded Timoshenko microbeams
作者： R. Ansari , M. Faghih Shojaei , R. Gholami , V. Mohammadi , M.A. Darabi
DOI: 10.1016/J.IJNONLINMEC.2012.10.010
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摘要: Abstract The thermal postbuckling characteristics of microbeams made functionally graded materials (FGMs) undergoing loads are investigated based on the modified strain gradient theory (MSGT). volume fraction ceramic and metal phases FGM is expressed by using a power low function. non-classical beam model presented herein capable interpreting size effects through introducing material length scale parameters encompasses couple stress (MCST) classical (CT). Based non-linear Timoshenko principle virtual work, stability equations associated boundary conditions derived then solved generalized differential quadrature (GDQ) method in conjunction with direct approach without linearization. influences index, parameter, behavior comprehensively investigated. Also, this study compares results obtained from MSGT those CT. effect geometrical imperfection buckling deformation prebuckled postbuckled states discussed.
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