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 8 of 8 for “"Beam on an elastic foundation"”.
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Effects of Surface Microstructure on the Strength of Adhesively Bonded Structures
"The experimental investigation in the present research is focused on the influence of surface roughness on the fracture resistance of an aluminum-epoxy interface. A layered double cantilever beam (LDCB) specimen was chosen for this experiment. The LDCB specimen was debonded by peeling off the …
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Mechanisms and mechanics of non-structural adhesion
Two topics dealing with adhesion are addressed: an investigation of the cling of thin polymeric films and an analysis of the effects of viscoelasticity on adhesive systems involving curvature mismatch. The results of an investigation into the mechanisms of adhesion and debonding energy associated …
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Ruga mechanics of composite media with soft inclusions
This thesis presents an investigation for the elastic deformation of two-phase fibril composites with soft inclusions, specifically, the influence of soft inclusions on the behavior of fibrils under compressive loading. It is demonstrated that the inclusion of soft material in the fibril matrix …
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Structural Optimization of Regeneratively Cooled Rotating Detonation Rocket Engines
Combustors in rotating detonation rocket engines (RDREs) must withstand prolonged exposure to high heat fluxes (>10 MW/m2 ) and ultrasonic-frequency detonative loading. Regenerative cooling is being considered for thermal management in RDREs, but there is concern that the cooling channels may fail …
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Computational Methods for Estimating Rail Life
In American rail operations, rails fail due to the combined effects of rail wear due to repetitive wheel contact and the growth of surface and sub-surface cracks and flaws. Rail maintenance includes frequent uncoupled wear and ultrasonic inspections that determine the amount of wear that the rail …
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Modeling Compressive Stress Distributions at the Interface between a Pallet Deck and Distribution Packaging
Three components, a pallet, packaging, and material handling equipment, of the unit load portion of the supply chain are physically and mechanically interacting during product storage and shipping. Understanding the interactions between two primary components, a pallet and packaging, in a unit load …
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Experimental and Theoretical Studies of Friction and Adhesion of Elastomeric Materials
In this dissertation, four distinct but in some ways related topics, mostly related to experimental and theoretical investigations of friction and adhesion of elastomeric materials, are presented. First, an experimental and theoretical study of the interaction between elastic beams and granular …
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Nonlinear vibration of beams and plates resting on elastic foundations having nonlinear stiffness properties
Beam elements are used to model components in which one dimension (the length) is significantly greater than the other two dimensions. On the other hand, a plate is a structural element char- acterised by its thickness being very small compared with the other two dimensions. Beams and plates find …