Journal
JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
Volume 29, Issue 8, Pages 3373-3380Publisher
KOREAN SOC MECHANICAL ENGINEERS
DOI: 10.1007/s12206-015-0735-4
Keywords
Gradient elasticity theory; Microbeam; Stability analysis; Stokes' transformation
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Based on gradient elasticity theory with surface energy, a simple and unified method is presented for the stability analysis of a generally supported microbeam. The proposed method conveniently computes an accurate buckling parameter for microbeams using both classical and non-classical boundary conditions restrained by translational and rotational springs. The Fourier coefficient and fundamental relations of strain gradient beams are obtained first. Stokes' transformation is applied to transform these equations into a set of algebraic equations with buckling parameter. The derived expressions can be useful for theoretical investigation that leads to a determinant calculation of a 4 x 4 matrix. The critical buckling loads of microbeams for variant scale parameters under different boundary conditions are computed using the proposed method. Comparing results with those in the literature validates the present analysis.
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