Search results for " First Order Shear Deformation"

showing 4 items of 4 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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Post-Buckling Analysis of Damaged Multilayered Composite Stiffened Plates by Rayleigh-Ritz Method

2016

A Rayleigh-Ritz approach for the analysis of buckling and post-buckling behavior of cracked composite stiffened plates is presented. The structure is modeled as the assembly of plate elements modeled by the first order shear deformation theory and taking geometric nonlinearities into account through the von Karman’s theory assumptions. Continuity along the plate elements connected edges and the enforcement of rigid and elastic restraints of the plate boundaries are obtained by using penalty techniques, which also allow to straightforwardly implement efficient crack modeling strategies. General symmetric and unsymmetric stacking sequences are considered and numerical procedures have been dev…

Rayleigh–Ritz methodcomposite plates cracked plates post-buckling analysis Ritz method first order shear deformation theory (FSDT)Materials sciencebusiness.industryShear deformation theoryComposite numberStacking02 engineering and technologyGeneral MedicineStructural engineeringFirst order01 natural sciencesFinite element methodRitz methodPhysics::Fluid Dynamics010101 applied mathematics020303 mechanical engineering & transports0203 mechanical engineeringBuckling0101 mathematicsbusinessSettore ING-IND/04 - Costruzioni E Strutture Aerospaziali
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A single-domain Ritz approach for buckling and post-buckling analysis of cracked plates

2019

Abstract A Ritz approach for the analysis of buckling and post-buckling of plates with through-the-thickness cracks is presented. The plate behavior is described by the first order shear deformation theory and von Karman’s geometric nonlinearity. The admissible functions used in the displacements approximation are series of regular orthogonal polynomial supplemented with special functions able to decribe the dicontinuity across the crack and the singularity at the crack tips; boundary functions are used to fullfill the homogeneous essential boundary conditions. Convergence studies and analysis results are presented for buckling and post-buckling of plates with a central through-the-thicknes…

Series (mathematics)Applied MathematicsMechanical EngineeringMathematical analysisDegrees of freedom (statistics)Boundary (topology)02 engineering and technology021001 nanoscience & nanotechnologyCondensed Matter PhysicsPlate buckling Plate post-buckling Ritz method First order shear deformation theoryNonlinear system020303 mechanical engineering & transportsSingularity0203 mechanical engineeringBucklingMechanics of MaterialsSpecial functionsModeling and SimulationGeneral Materials ScienceBoundary value problemSettore ING-IND/04 - Costruzioni E Strutture Aerospaziali0210 nano-technologyMathematicsInternational Journal of Solids and Structures
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Postbuckling analysis of cracked stiffned plates by pb–2 Rayleigh-Ritz method

2015

A Rayleigh-Ritz approach for the analysis of buckling and post-buckling behavior of cracked composite stiffened plates is presented. The structure is thought as the assembly of plate elements modeled by the first order shear deformation theory. Continuity along the edges common to contiguous elements are enforced by using penalty techniques, which also allow to straightforwardly implement efficient crack modeling strategies. General symmetric and unsymmetric stacking sequences are considered and numerical procedures have been developed and used to validate the present solution by comparison with FEA results. Original results are also presented for post-buckling solution of multilayered stif…

composite plates cracked plates post-buckling analysis pb2 Ritz method first order shear deformation theory (FSDT).Settore ING-IND/04 - Costruzioni E Strutture Aerospaziali
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