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http://dx.doi.org/10.12989/sem.2019.70.6.711

Buckling analysis of arbitrary point-supported plates using new hp-cloud shape functions  

Jamshidi, Sajad (Department of Civil Engineering, University of Guilan)
Fallah, N. (Faculty of Civil Engineering, Babol Noshirvani University of Technology)
Publication Information
Structural Engineering and Mechanics / v.70, no.6, 2019 , pp. 711-722 More about this Journal
Abstract
Considering stress singularities at point support locations, buckling solutions for plates with arbitrary number of point supports are hard to obtain. Thus, new Hp-Cloud shape functions with Kronecker delta property (HPCK) were developed in the present paper to examine elastic buckling of point-supported thin plates in various shapes. Having the Kronecker delta property, this specific Hp-Cloud shape functions were constructed through selecting particular quantities for influence radii of nodal points as well as proposing appropriate enrichment functions. Since the given quantities for influence radii of nodal points could bring about poor quality of interpolation for plates with sharp corners, the radii were increased and the method of Lagrange multiplier was used for the purpose of applying boundary conditions. To demonstrate the capability of the new Hp-Cloud shape functions in the domain of analyzing plates in different geometry shapes, various test cases were correspondingly investigated and the obtained findings were compared with those available in the related literature. Such results concerning these new Hp-Cloud shape functions revealed a significant consistency with those reported by other researchers.
Keywords
elastic buckling; point-supported plates; hp-cloud shape functions; Kronecker Delta property; arbitrary shape;
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