Search results for " postbuckling"

showing 3 items of 3 documents

A Rayleigh-Ritz approach for postbuckling analysis of variable angle tow composite stiffened panels

2018

Abstract A Rayleigh-Ritz solution approach for generally restrained multilayered variable angle tow stiffened plates in postbuckling regime is presented. The plate model is based on the first order shear deformation theory and accounts for geometrical nonlinearity through the von Karman’s assumptions. Stiffened plates are modelled as assembly of plate-like elements and penalty techniques are used to join the elements in the assembled structure and to apply the kinematical boundary conditions. General symmetric and unsymmetric stacking sequences are considered and Legendre orthogonal polynomials are employed to build the trial functions. A computer code was developed to implement the propose…

Rayleigh–Ritz methodEngineeringSource codemedia_common.quotation_subjectComposite numberStructure (category theory)02 engineering and technologyPhysics::Fluid Dynamics0203 mechanical engineeringGeneral Materials ScienceBoundary value problemSettore ING-IND/04 - Costruzioni E Strutture AerospazialiVariable angle tow composites Composite stiffened plates Postbuckling analysis Rayleigh-Ritz method First Order Shear DeformationLegendre polynomialsCivil and Structural Engineeringmedia_commonbusiness.industryMechanical EngineeringStructural engineering021001 nanoscience & nanotechnologyFinite element methodComputer Science Applications020303 mechanical engineering & transportsModeling and SimulationOrthogonal polynomials0210 nano-technologybusinessComputers & Structures
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Buckling and post-buckling of variable stiffness plates with cutouts by a single-domain Ritz method

2023

Structural components with variable stiffness can provide better performances with respect to classical ones and offer an enlarged design space for their optimization. They are attractive candidates for advanced lightweight structural applications whose functionalities often impose the presence of cutouts that requires accurate and effective analysis for their design. In the present work, a single-domain Ritz formulation is proposed, implemented and validated for the analysis of buckling and post-buckling behaviour of variable stiffness plates with cutouts. The plate model is based on the first-order shear deformation theory with nonlinear von Karman strain–displacement relationships. The p…

Variable stiffness plates Cutouts Buckling Postbuckling Ritz methodMechanical EngineeringBuilding and ConstructionSettore ING-IND/04 - Costruzioni E Strutture AerospazialiCivil and Structural EngineeringThin-Walled Structures
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Buckling and post-buckling analysis of cracked composite plates via a single-domain Ritz approach

2018

Thin and moderately thick composite multi-layered plates are widely employed in many engineering applications, especially in naval and aerospace structures. These structural components can experience in service the presence of cracks, generated for example by corrosion, fatigue or accidental external causes. Cracks can affect the load carrying capability, buckling and post-buckling behaviour of plates; therefore, their effects need to be investigated and taken into account for fail safe or damage tolerant design. Additionally, attention should be devoted to the interaction of cracks with buckling and post-buckling behaviour, as the energy release rate in post-buckling regimes can be adverse…

Buckling postbuckling cracked plates multilayered compositeSettore ING-IND/04 - Costruzioni E Strutture Aerospaziali
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