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.
Results
Showing 1 to 20 of 32 for “"Elastic medium"”.
-
Realistic impulsive P wave source in an infinite elastic medium
… instantaneous impulsive pressure sources for an elastic P wave in an infinite medium lead to basic contradictions, a step function source yielding infinite displacements as the shear modulus goes to zero, and the total energy radiated by a delta function (or any derivative of the delta function) …
-
Fluid damping with elastic medium in 3-D printing process
Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
-
Scattering and inverse-scattering problems in a continuously varying elastic medium.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth and Planetary Sciences, 1969.
-
Static stiffness coefficients for circular foundations embedded in an elastic medium.
Thesis. 1975. M.S.--Massachusetts Institute of Technology. Dept. of Civil Engineering.
-
Stresses and Displacements Around an Unbraced Rectangular Excavation in an Elastic Medium
Made available in DSpace on 2014-12-08T23:56:33Z (GMT). No. of bitstreams: 1 6607736.pdf: 5176298 bytes, checksum: 7f48af39b15ea3d11b2ebfda3765d3d7 (MD5) Previous issue date: 1966
-
Spectral super-element approach for wave propagation in range dependent elastic medium
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1996.
-
On iso- and nonisothermal crack problems of a layered anisotropic elastic medium
… within the framework of linear anisotropic thermoelasticity and under the state of generalized plane deformation. The crack is assumed to be parallel to the layer bounding surfaces. By employing the Fourier integral transform technique and the flexibility/stiffness matrix formulation, the current …
-
Wave scattering from cylindrical fluid inclusions in an elastic medium and determination of effective medium properties
… fluid-filled inclusion in an attenuating elastic medium. The scattering vs. angle results are shown for a laboratory experiment in which a single water-filled cylindrical inclusion is embedded in polypropylene. Four different radius-towavelength ratios of 1.9, 2.4, 8.8 and 11.0 were …
-
Wave scattering from cylindrical fluid inclusions in an elastic medium and determination of effective medium properties
Thesis (Ocean. E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 1995.
-
An Energy Method for Analyzing Wave Propagation in Viscous Flow in An Elastic Tube Surrounded by An Elastic Medium
Made available in DSpace on 2014-12-14T14:42:14Z (GMT). No. of bitstreams: 1 7811307.pdf: 4785973 bytes, checksum: a35de094b8545bcec5ea20922572421c (MD5) Previous issue date: 1978
-
O método dos elementos finitos aplicado à análise de vigas e placas apoiadas em meio elástico
… as an isotropic, homogeneous and linear elastic medium. Some considerations about the actual behaviour of the soil and about the usual assumptions used to solve this and similar problems are discussed. The effects of eventual separation of contact surfaces are taken into account. A …
-
Propapation and attenuation characteristics of multilayered media
… arise when modelling the seafloor as a layered elastic medium are analyzed.
-
Codomain Rigidity of the Dirichlet to Neumann Operator for the Riemannian Wave Equation
… If the Riemannian manifold is modelled as an elastic medium, this operator represents the data available to an observer on the boundary of the manifold when the manifold is set into motion through boundary vibrations. We study the Dirichlet to Neumann operator when vibrations are imposed and …
-
Continuum Models of Collective Migration in Living Tissues
… via a continuum model of a tissue as an active elastic medium, where mechanical deformations are coupled to and feed back onto chemical signaling.</p> <p>We begin in Chapter 1 with a brief review of cell migration at both the single-cell and many-cell levels, and of the experimental tools used …
-
Compression Molding of Carbon Composite Prosthetic Foot Blade
… molding composites with curved surfaces where an elastic medium is used as an interface between the solid mold halve and a laminate.Two different test cases were created to compare appearance, strength and stiffness of compression molded samples to autoclave cured samples. The result of this …
-
Nonlinear effects near an explosions
… charge, in terms of the properties of the medium and the weight of the explosive charge; and then, to establish a relationship between the size of this nonlinear region and the frequency spectrum of the elastic signal. The computation of the size of the shattered zone, shows that this …
-
Interação estaqueamento - meio homogêneo
… pile groups, embedded in an homogeneous linear elastic medium, is presented in this work, with the intention of predicting displacents, rotations and forces distribution along the piles, considering pile-soil interaction. The present analysis is assumed to be completely linear elastic. A …
-
Statistical Physics of Soft Random Solids: Vulcanization, Heterogeneity, and Elasticity
… 3, 4, and 5, spatial heterogeneity in the elastic properties of soft random solids is examined via vulcanization theory. The spatial heterogeneity in the structure of soft random solids is a result of the fluctuations locked-in at their synthesis, which also brings heterogeneity in their …
-
Nonlocalized faulting in a thick lithosphere : application to lunar contraction
… We model the lunar lithosphere as a layered elastic medium that fails according to a Mohr-Coulomb criterion. We use elastic constants inferred from lunar seismic profiles, and use a finite element code to model the response of this lithosphere to contraction. We find that fault localization …
-
Destructive disassembly of bolts and screws using impact
… process by studying the characteristics of elastic waves caused by impact. This research presents a new method for increasing the shear stress applied on the bolt head without increasing the energy input invested on launching striker. The equations are developed for the elastic waves in …
Page 1 of 2