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 19 of 19 for “"Elastic solids"”.
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Stresses in Layered Two-Dimensional Elastic Solids
Made available in DSpace on 2015-05-12T17:06:23Z (GMT). No. of bitstreams: 2 license.txt: 4848 bytes, checksum: 96035ab3f5e1c23cc7138a224ce498bd (MD5) 0025239.PDF: 4562641 bytes, checksum: 3e2ed5ac6f7c8222b30894b6bcb8ff18 (MD5) Previous issue date: 1957
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Lattice-based peridynamic modeling of linear elastic solids
… for developing the lattice-based linear elastic peridynamic model. The microelastic constants for the lattice micropolar peridynamic model are derived and successfully implemented. A convergence study demonstrates the accuracy of this model. The results are compared to a previous version …
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Modeling and Simulation of Morphological Instabilities in Thin Elastic Solids
… study of morphological instabilities in thin solids, such as buckling of thin shells and wrinkling of thin sheets, is of growing interest to a number of academic disciplines including en-gineering, physics, biology, and many others. For example, buckling has traditionally been re-garded as an …
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Semi-Analytical Finite-Element Analysis for Elastic Solids of Revolution
Made available in DSpace on 2014-12-14T14:42:10Z (GMT). No. of bitstreams: 1 7624044.pdf: 3939485 bytes, checksum: f68a86b89be290aa76f6034d8f776fb4 (MD5) Previous issue date: 1976
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Design tools and predictions for nonlinear elastic solids in soft machine design
… tools (Chapter 2) for rheologically-complex soft solids. We identify material properties and features that may be vital for optimal soft machine performance, such as intrinsic nonlinearities, variable stiffness, and strain to break. Keeping these properties in mind, we explore new design-based …
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Visualization of wave propagation in elastic solids using a mass-spring lattice model
Thesis (M.S.V.S.)--Massachusetts Institute of Technology, Dept. of Architecture, February 1990.
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Y-shaped cutting as a characterization method for the failure of soft elastic solids
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2023-12-01
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Simulation of thin elastic solids in the incompressible viscous flow using implicit interface representation
… The interface is assumed very thin and has zero elastic stress when it is flat. The interface gives singular forces to the incompressible viscous fluid and the fluid solver handles discontinuities across the interface. Instead of solving two dynamic systems (i.e., fluid and solid), we solve the …
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A New Node-to-Node Approach to Contact/impact Problems for Two Dimensional Elastic Solids Subject to Finite Deformation
Problems of interest in this study are contact/impact problems wherein the implicit mid-point rule is used as the primary time stepping algorithm to find the solution incrementally. In order to conserve the system energy, the persistency condition is incorporated as the contact constraint. The …
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Microstructural non-linear finite-element analysis of rat myocardium with hydrogel biomaterial inclusions
… and hy drogel injectate could be described as elastic solids, and provided a basis for extension to more complex descriptions of material behaviour. A realistic microstructural finite-element (FE) mesh was reconstructed from high-resolution confocal mi croscopy imaging data of rat myocardium. …
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A gradient-damage theory for quasi brittle fracture
… modeling of brittle fracture of linear elastic solids has been the subject of several studies in the past 25 years. An attractive feature of this approach to model fracture is its seamless ability to simulate the complicated fracture processes of nucleation, propagation, branching and …
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Design tools for linear viscoelastic fluids
… use of conventional materials such as hard, elastic solids and simple, Newtonian fluids. Rheologically-complex materials (non-Newtonian fluids and soft solids) demonstrate useful and novel properties in both engineered and biological systems. Incorporating these materials in rational …
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Dislocations and Green's functions in prestressed solids
… dislocation (and inclusion) fields in non-linear elastic solids is analyzed by extending previous solutions by Eshelby and Willis. Employing a plane strain constitutive model (for incompressible incremental non-linear elasticity) to describe the behaviour a broad class of (anisotropic) materials, …
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Buckling Patterns and Mechanics of Thin Interfacial Polymer Films
<p>Thin elastic solids are easily deformed and will readily collapse into complex buckling modes. They can also transition between distinct buckling modes when the confining forces evolve over time, forming a variety of robust and striking patterns. Here we explore how thin interfacial films and …
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Methods for the integrated design of viscoelastic materials and structural geometry
… selected simple materials, including linear elastic solids and Newtonian fluids, for their designs, and optimize designed systems within the limitations of preselected materials. However, allowing complex materials (e.g., viscoelastic materials and soft solids) as options for system materials …
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Co-design of surface textures and non-newtonian fluids for decreased friction
Engineering design is typically limited to linear elastic solids or Newtonian fluids; however, design with more complex materials (for example non-linear viscoelastic materials) can provide ways to enhance performance. The main problems for design with non-linear viscoelastic materials are 1)~there …
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Boundary Value Problems in Rectilinearly Anisotropic Thermoelastic Solids
… crack (or cracks) in an anisotropic thermoelastic solid. The thermoelastic field, in such materials, when the infinitesimal theory is employed, is governed by a set of elliptic partial differential equations. The general solution of these equations is expressed in terms of arbitrary …
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Nonlinear dynamics of complex fluids in fragmentation and fracture
… or biological macromolecules that result in viscoelastic fluid characteristics. For many of these processes the effects of varying the rheological properties on the dynamics of fragmentation or fracture are still poorly understood. In this thesis, we investigate some of the underlying complexities …