Dynamic buckling of FGM truncated conical shells subjected to non-uniform normal impact load

• Published in: Composite structures Vol. 92; no. 12; pp. 2979 - 2983
• Main Authors: Zhang, Jinghua, Li, Shirong
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.11.2010; Elsevier
• Subjects: Buckling; Conical shells; Dynamics; Exact sciences and technology; Functionally graded materials (FGMs); Functionally gradient materials; Fundamental areas of phenomenology (including applications); Geometrical nonlinearity; Impact buckling; Impact loads; Initial imperfection; Loads (forces); Mathematical analysis; Nonlinearity; Physics; Shells; Solid mechanics; Static elasticity (thermoelasticity...); Structural and continuum mechanics; Truncated conical shell; Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...); Impact buckling; Functionally graded materials (FGMs); Truncated conical shell; Geometrical nonlinearity; Initial imperfection; High strain; Prestress; Conical shell; Displacement(deformation); Large displacement; Revolution shell; Dynamic buckling; Runge Kutta method; Modeling; Uniform load; Functionnally graded material; Truncated shape; Defect; Galerkin method; Non linear effect; Power law; Dynamic load; Mechanical shock; Normal incidence
• ISSN: 0263-8223; 1879-1085
• DOI: 10.1016/j.compstruct.2010.05.009

Dynamic buckling of functionally graded materials truncated conical shells subjected to normal impact loads is discussed in this paper. In the analysis, the material properties of functionally graded materials shells are assumed to be graded in the thickness direction according to a simple power law distribution in terms of the volume fractions of the constituents. Geometrically nonlinear large deformation and the initial imperfections are taken into account. Galerkin procedure and Runge–Kutta integration scheme are used to solve nonlinear governing equations numerically. From the characteristics of dynamic response obtain critical loads of the shell according to B-R criterion. From the research results it can be found that gradient properties of the materials have significant effects on the critical buckling loads of FGM shells.