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Showing 1 to 20 of 49 for “"Elastic Foundation"”.
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Nonlinear Symmetrical Vibrations of a Circular Plate on an Elastic Foundation
Made available in DSpace on 2014-12-10T17:25:40Z (GMT). No. of bitstreams: 1 6808027.pdf: 1542493 bytes, checksum: 4ac9e1c7278b18c37ec5c2d41abbf5ac (MD5) Previous issue date: 1967
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An Analysis of Circular Cylindrical Shells Surrounded by An Elastic Foundation
Made available in DSpace on 2014-12-08T23:57:05Z (GMT). No. of bitstreams: 1 6901322.pdf: 3487443 bytes, checksum: b4f00bed334a80b5bc7ebc7e09775227 (MD5) Previous issue date: 1968
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Infinite Orthotropic plate on an elastic foundation with a traverse point load
… an infinite orthotropic plate on a frictionless elastic foundation subjected to a transverse point load. We are concerned with the stress distribution in the vicinity of the load application. Based on the assumption of a uniform stress distribution under the load, a Fourier Transform technique is …
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Compressive buckling of a clamped circular plate on an elastic foundation not in attachment
… under radial compressive forces resting on an elastic foundation not in attachment was studied with regard to it's behavior in the 2nd mode shape. Two regions of action are controlled by two differential equations of the fourth order which were solved in terms of the Bessel functions. The …
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Some problems in the axially symmetrical bending of a thick circular plate resting on an elastic foundation
From the results of the cases discussed, it can be concluded that the neglect of transverse-shear deformation and normal stress results in expressions for bending moments and deflection which may be seriously in error. /
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The Effects of Elasticity in the Foundation on the Flutter of a Metallic High Aspect Ratio Wing
… chord across the semis-span, and a simulated elastic foundation. The general planform of the wing is similar to the one found in a High- Altitude Long-Endurance Uninhabited Aerial Surveillance Vehicle (HALE USAV).</p> <p>The problem is studied using a simplified aerodynamic loading based on …
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Investigation of the Stability of Metallic/Composited-Cased Solid Propellant Rocket Motors under External Pressure
… the stability analyses. The inner, low-strength elastic cores are modeled as linear and nonlinear elastic foundations. A general, refined, Sanders' nonlinear shell theory, which accounts for geometric nonlinearity in the form of von Karman type of nonlinear strain-displacement relations, is used …
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Inelastic Analysis of the Loop Tack Test for Pressure Sensitive Adhesives
… and three-dimensional (3D) models. A bilinear elastic-plastic constitutive law is used for the strip. The deformation of the pressure sensitive adhesive is approximated as uniaxial extension of independent adhesive strands. A Winkler-type nonlinear elastic foundation and a viscoelastic …
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Eigenvalue optimization and its applications in buckling and vibration
… were given. A mathematical model for columns on elastic foundation also was derived and transformed to an affine sum problem. Unimodal solution of shape of the strongest pinned-pinned column on an elastic foundation was obtained. In addition the application in vibration and buckling, it is …
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Structural Optimization of Regeneratively Cooled Rotating Detonation Rocket Engines
… hot wall is approximated as a beam on an elastic foundation, where the stiffness of the elastic foundation is a function of the cooling channel geometry and the properties of the combustor material. The structural optimization framework is applied to an exemplary RP2/GOX RDRE combustor, …
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Effects of Surface Microstructure on the Strength of Adhesively Bonded Structures
… the specimen geometry based on a ""beam on an elastic foundation"" model. The experimental observations established a direct relationship between the surface roughness of aluminum substrates and the fracture resistance of the aluminum-epoxy interface. This relationship provides guidance to …
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Closed/Semi-Closed Form Solutions for Face/Core Debonds in Sandwich Beams
… and study such debonds analytically, an Elastic Foundation Analysis (EFA) can be used to incorporate the effects of crack tip deformation in beam theory. In this model, EFA is extended further to better capture the effects of transverse shear. Unlike most models, this approach can be …
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Structural analysis of multi-layered concrete pavement systems
… may be treated as a Burmister layer, or as an elastic spring bed, or as a plate. This study is useful for comparison of different models of pavement systems. The proposed procedure is implemented in the FORTRAN code DIPLOMAT. An edge loading solution for two semi-infinite plates resting on a …
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Nonlinear vibration of beams and plates resting on elastic foundations having nonlinear stiffness properties
… more interested in it. Because the structure foundation is the most important part of the building process, engineers and designers dedicate more attention to that part of the structure. This contributes to the desire to build strong, safe, and economic structures for a sustainable …
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Characterization of a Pressure Sensitive Adhesive (PSA) for Mechanical Design
… and applying stress models, collecting visco-elastic material properties, and presenting the material data for use in adhesive joint designs. There are a number of models/theories that can be applied to the design of Pressure Sensitive Adhesive (PSA) joints. Unfortunately, few design engineers …
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Finite Element Analysis of Geotextile Tubes
… ratio of 5:1. The tubes are modeled resting on elastic foundations. For each initial shape, the elastic foundation is modeled using two different stiffnesses; one allows a minimum amount of "sinking" into the foundation and the other allows a considerable amount. The weight of the geotextile is …
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Patterns in an elastic bar
… Yip's formulation of the Ericksen model for an elastic bar on an elastic foundation [63] which leads to the Euler-Lagrange equation for the functional ε(u) = ∫ between 0 and 1 (γu²xx +W(ux) + ɑu²)dx, where x is an element of the set (0, 1). with double Dirichlet boundary conditions. Here the …
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Computer aided analyses of symmetrically loaded thin cylindrical shell using transfer matrix method
… and the analogy between shell and beam on elastic foundation is proved. This analogy between shell and beam is used as a foundation to analyze the shell. Several different loading conditions, e.g., uniform and variable pressure load, ring load etc. are considered. The displacement, shear, …
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Experimental analysis of king-post truss with semi-rigid joints
… a rafter member is supported by a continuous elastic foundation; i.e. by equally spaced nails. It yields results which are reasonably close to those found experimentally. The Moire Fringe effect was introduced to measure the rotation of the wooden chords relative to the gusset plates of small …
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Determination of axial load and support stiffness of continuous beams by vibration analysis
… a continuous prismatic Bernoulli-Euler beam on elastic supports, subjected to a compressive axial load. The first model, which approximates support stiffnesses by an equivalent elastic foundation, is found to be inaccurate for wave lengths close to the support spacing. A discrete mass model is …
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