Materials, 2020-04, Vol.13 (8), p.1984
2020
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Details
- Autor(en) / Beteiligte
- Titel
- Nonlinear Buckling Behavior of Spiral Corrugated Sandwich FGM Cylindrical Shells Surrounded by an Elastic Medium
- Ist Teil von
- Materials, 2020-04, Vol.13 (8), p.1984
- Ort / Verlag
- Switzerland: MDPI AG
- Erscheinungsjahr
- 2020
- Quelle
- EZB Electronic Journals Library
- Beschreibungen/Notizen
- This paper presents a semi-analytical approach for investigating the nonlinear buckling and postbuckling of spiral corrugated sandwich functionally graded (FGM) cylindrical shells under external pressure and surrounded by a two-parameter elastic foundation based on Donnell shell theory. The improved homogenization theory for the spiral corrugated FGM structure is applied and the geometrical nonlinearity in a von Karman sense is taken into account. The nonlinear equilibrium equation system can be solved by using the Galerkin method with the three-term solution form of deflection. An explicit solution form for the nonlinear buckling behavior of shells is obtained. The critical buckling pressure and the postbuckling strength of shells are numerically investigated. Additionally, the effects of spiral corrugation in enhancing the nonlinear buckling behavior of spiral corrugated sandwich FGM cylindrical shells are validated and discussed.
- Sprache
- Englisch
- Identifikatoren
- ISSN: 1996-1944eISSN: 1996-1944DOI: 10.3390/MA13081984Titel-ID: cdi_doaj_primary_oai_doaj_org_article_93c78c98318745a894ef654121f0cc67
- Format
- –
- Schlagworte
- Boundary conditions, Buckling, Civil engineering, Coordinate transformations, Cylindrical shells, Elastic foundations, Elastic media, Equilibrium equations, External pressure, Functionally gradient materials, Galerkin method, Homogenization, Nonlinearity, Postbuckling, postbuckling behavior, sandwich FGM, semi-analytical approach, Shear strain, Shell theory, Shells, spiral corrugated cylindrical shells, Temperature effects