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 15 of 15 for “"soft solids"”.
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Water driven deformation in soft solids
… they use, we are able to develop a self-actuated soft solid-liquid composite. This self-actuation is driven by the evaporation and resulting tension of water, which can deform soft materials. The effects that water droplets deforming in soft solids have need to be characterized in order to utilize …
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Localized deformation in soft solids around spherical cavities
… like internal organs, brain, or skin, are soft solids that may be exposed to injury inducing mechanisms at a range of rates, resulting in damage. Sport injuries, car crashes, traumatic brain injury, and ballistic impacts can produce strain rates from 10−10^5 1/s. The parameters governing …
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Enabling design with rheological complexity: intuition and optimization of viscoelastic materials
… or simple fluids for design. Complex materials (soft solids and non-Newtonian fluids) greatly increase the design space. Additionally, these materials add functionality (viscoelasticity, nonlinearity) that can achieve diverse performance objectives (user experience, vibration isolation, etc.). …
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Pick-and-place nanoassembly
… of viscous liquids, non-viscous liquids, and soft solids. Deposited volumes span a range of 10 orders of magnitude from 10-24 to 10-14 liters. Structures with dimensions of 60 to 100 nm are common.
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Modeling curvature-resisting material surfaces using isogeometric analysis
… for several numerical examples involving soft materials with thin coatings and liquid-shell surfaces, capturing budding-like behavior observed at cell membranes. Our results demonstrate a stiffer overall mechanical behavior when material surfaces resist bending deformations and illustrate …
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Shape formation via elastic instabilities
… modes in stiff material systems. However, soft highly deformable solids, such as rubbers and biological tissues, can undergo instabilities without failure, offering the opportunity to utilize instabilities to change their shape. Furthermore, the largestrain mechanics of soft solids …
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Design tools for linear viscoelastic fluids
… 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 engineering …
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Analysis of Dynamic Surface Instabilities in Soft Hydrogel Cylinders Subject to Laser-Driven Shock-Loading
Soft materials subject to both static and dynamic loading are known to exhibit a variety of mechanical instabilities which may lead to intricate surface deformation patterns. In particular, creases and wrinkles have been found to play an important role in the morphogenesis of soft tissues and tumor …
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Mathematical models of soft elasticity: elastomers, active solids and topological metamaterials
The mechanics of soft solids, from everyday materials like rubber to exotic metamaterials for emerging technologies, is elegantly described by the theory of elasticity, which uses a continuum field approach to capture universal features in the macroscopic physics of solids. Using this approach, we …
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On the two-potential constitutive modelling of rubber viscoelastic materials
U of I Only Restriction Lifted for Item 93166 on 2018-07-08T09:15:36Z.
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Design tools and predictions for nonlinear elastic solids in soft machine design
Soft machine design is a new frontier for using and designing rheologically complex materials, however we lack a systematic design toolbox for such efforts. We study existing design tools (Chapter 1), identify limitations (Chapter 1), and present new design tools (Chapter 2) for …
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Structure, slow dynamics, kinetic arrest, and massively reconfigurable assembly in colloidal suspensions
… liquids and the diverse non-equilibrium soft solids they can form, and how quenched disorder can be used to drive equilibrium assembly. These fundamental science topics are highly relevant for materials science and engineering applications. Chapters 2 through 5 focus predominantly on slow …
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Methods for the integrated design of viscoelastic materials and structural geometry
… 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 can …
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Novel Rheometric Techniques and Constitutive Models for Linear and Nonlinear Rheology: Applications to Polymeric Solutions and Colloidal Gels
… rheological properties of complex fluids and soft solids. In Part I of this thesis, we utilize fractional differential equations, formulated into fractional constitutive models, to describe the strain and rate-dependence of the stress response in complex fluids. This formulation is capable of …