Search Results - "Clayton, J.D."

A continuum description of nonlinear elasticity, slip and twinning, with application to sapphire by Clayton, J.D

“…A model is developed for elasticity, plasticity and twinning in anisotropic single crystals subjected to large deformations. Dislocation glide and deformation…”
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Phase-field analysis of fracture-induced twinning in single crystals by Clayton, J.D., Knap, J.

“…Deformation twinning at the tip of a straight crack or notch is analyzed using a phase-field method that seeks equilibrium twin morphologies via direct…”
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Simulation of shock wave propagation in single crystal and polycrystalline aluminum by Lloyd, J.T., Clayton, J.D., Becker, R., McDowell, D.L.

“…•We create and apply a micromechanics based model to shock loading of aluminum.•We compare simulated wave profiles with experimental data from 2 to 110GPa.•We…”
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Dynamic plasticity and fracture in high density polycrystals: constitutive modeling and numerical simulation by Clayton, J.D.

“…Presented is a constitutive framework for modeling the dynamic response of polycrystalline microstructures, posed in a thermodynamically consistent manner and…”
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Modeling effects of crystalline microstructure, energy storage mechanisms, and residual volume changes on penetration resistance of precipitate-hardened aluminum alloys by Clayton, J.D.

“…An anisotropic nonlinear crystal mechanics model is developed for a class of ductile aluminum alloys, with the intent of relating microscopic features and…”
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Dimensional analysis and extended hydrodynamic theory applied to long-rod penetration of ceramics by Clayton, J.D.

“…Principles of dimensional analysis are applied in a new interpretation of penetration of ceramic targets subjected to hypervelocity impact. The analysis…”
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Modeling dynamic plasticity and spall fracture in high density polycrystalline alloys by Clayton, J.D.

“…The dynamic thermomechanical response of a tungsten heavy alloy is investigated via modeling and numerical simulation. The material of study consists of…”
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Analysis of shear localization in viscoplastic solids with pressure-sensitive structural transformations by Clayton, J.D.

“…Localization, in the form of adiabatic shear, is analyzed in viscoplastic solids that may undergo structural transformation driven by pressure, shear stress,…”
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Nonlinear thermodynamic phase field theory with application to fracture and dynamic inelastic phenomena in ceramic polycrystals by Clayton, J.D.

“…A geometrically nonlinear phase field theory accounting for dissipation, rate effects, nonlinear thermoelasticity, fracture, and other structural changes is…”
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Phase field modeling of directional fracture in anisotropic polycrystals by Clayton, J.D., Knap, J.

“…[Display omitted] •New phase field theory for fracture in fully anisotropic heterogeneous crystalline solids is developed.•3D simulations of tension of SiC and…”
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Compatibility conditions from a Gram–Schmidt decomposition of deformation gradient in two dimensions by Clayton, J.D.

“…•A Gram-Schmidt decomposition with upper triangular stretch tensor is invoked to analyze compatibility conditions for planar motions.•New PDEs for upper…”
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Finsler geometry of nonlinear elastic solids with internal structure by Clayton, J.D.

“…Concepts from Finsler differential geometry are applied towards a theory of deformable continua with internal structure. The general theory accounts for finite…”
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Phase field modeling and simulation of coupled fracture and twinning in single crystals and polycrystals by Clayton, J.D., Knap, J.

“…A phase field theory incorporating both fracture and deformation twinning behaviors in crystalline solids is described and implemented in finite element…”
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Simulation and dimensional analysis of instrumented dynamic spherical indentation of ductile metals by Clayton, J.D., Lloyd, J.T., Casem, D.T.

“…Finite element (FE) modeling of instrumented dynamic indentation experiments in a miniature Kolsky bar is undertaken. Geometry, including an output bar with…”
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Analysis of shock waves in a mixture theory of a thermoelastic solid and fluid with distinct temperatures by Clayton, J.D.

“…The continuum theory of mixtures is used to describe a medium consisting of a solid phase and fluid phase, both compressible and attributed distinct…”
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A phase field model of deformation twinning: Nonlinear theory and numerical simulations by Clayton, J.D., Knap, J.

“…A continuum phase field theory and corresponding numerical solution methods are developed to describe deformation twinning in crystalline solids. An order…”
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Nonlinear thermomechanics for analysis of weak shock profile data in ductile polycrystals by Clayton, J.D.

“…Modeling of shock compression of isotropic, polycrystalline elastic-plastic solids that deform by dislocation glide is undertaken. Internal energy density of…”
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A nonlinear anisotropic elastic–inelastic constitutive model for polycrystalline ceramics and minerals with application to boron carbide by Clayton, J.D., Tonge, A.L.

“…A new continuum constitutive theory is developed and implemented for study of polycrystalline brittle solids subjected to possibly large stress and finite…”
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On rate dependence and anisotropy in phase field modeling of polycrystalline fracture by Clayton, J.D., Knap, J., Leavy, R.B.

“…A phase field theory of fracture incorporating rate dependence (i.e., kinetic viscosity) and anisotropic elasticity is implemented to study strength and…”
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Analysis of shock compression of strong single crystals with logarithmic thermoelastic-plastic theory by Clayton, J.D.

“…A finite strain theory is developed for anisotropic single crystals undergoing shock loading. Inelastic deformation may arise from dislocation slip, twinning,…”
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