Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"In-plane Compression"”.
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Minimum-weight design of symmetrically laminated composite plates for postbuckling performance under in-plane compression loads
A postbuckling analysis procedure for simply-supported, symmetrically laminated, rectangular, generally orthotropic plates under uniaxial compression based on a Marguerre-type energy method was developed. The analysis assumes the out-of-plane displacement to be represented by using a truncated …
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Ultimate Strength of Clamped Steel-Elastomer Sandwich Panels under Combined In-plane Compression and Lateral Pressure
An efficient interaction formula and a semi-analytical method are developed for calculating the ultimate strength of steel-elastomer sandwich panels under combined in-plane compression and lateral pressure. By using the Galerkin method and extending the semi-analytical method to clamped sandwich …
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Effect of non-linear loading paths on sheet metal fracture : large strain in-plane compression followed by uniaxial tension
… high strength steel sheets are rapidly entering the transport industry, as their high strength to weight ratio helps improving fuel and costs efficiency. The early ductile fracture of these materials limits their formability and crash-worthiness. A phenomenological criterion to predict …
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Compression and buckling of composite panels with curvilinear fibers
The plane in-plane compression response for a symmetrically laminated composite panel with a spatially varying fiber orientation has been analyzed for four different boundary conditions. Variation of the fiber angle along the length of a composite laminate results in stiffness properties that …
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Postbuckling Analysis of Delaminated Composite Plates Under Compression (Composite Laminates)
Failure mechanics of delamination problems in composite laminates under compression is investigated. The failure modes in general may include prebuckling, postbuckling, delamination growth and final failure. Buckling load is determined by solving an eigenvalue problem using a subspace iteration …
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Application of fracture mechanics to predict the growth of single and multi-level delaminations and disbonds in composite structures
… methods to capture the complex growth of damage in laminated composites leads to a conservative design approach applied in today's composite aircraft structures. The aim of the presented research was to develop an improved methodology for the failure prediction of laminated composites containing …
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At the Intersection of Bistability and Elastic Instability: Switching and Locking Structures using Asymmetric Carbon Fiber Composites
The next evolution of engineered structures would be to have an on-demand ability to become soft and foldable for packing in compact dimensions. This adaptive capability makes them convenient in transportation such as space structures where packaging of large deployable structures is crucial that …
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Nanoscale Coherent-Acoustic-Phonon Dynamics in Molybdenum Disulfide Using Ultrafast Electron Microscopy
In this dissertation, photoexcited, defect-mediated anisotropic acoustic-phonon dynamics in molybdenum disulfide (MoS2) have been directly imaged on the nanometer-picosecond spatiotemporal scales in real space. MoS2 is a prototypical material system of transition metal dichalcogenides extensively …
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Vibration and Buckling Analysis of Unitized Structure Using Meshfree Method and Kriging Model
The Element Free Galerkin (EFG) method, which is based on the Moving Least Squares (MLS) approximation, is developed here for vibration, buckling and static analysis of homogenous and FGM plate with curvilinear stiffeners. Numerical results for different stiffeners configurations and boundary …