Search Results - "MCDOWELL, David"

Nonequilibrium statistical thermodynamics of thermally activated dislocation ensembles: part 3—Taylor–Quinney coefficient, size effects and generalized normality by McDowell, David L.

“…The nonequilibrium statistical thermodynamics framework for thermally activated dislocation ensembles introduced in Parts 1 and 2 is applied to interpret and…”
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Nonequilibrium statistical thermodynamics of thermally activated dislocation ensembles: part 2—ensemble evolution toward correlation of enthalpy barriers by McDowell, David L.

“…In part 1, we formally defined important physical concepts in statistical thermodynamics that undergird internal state variable (ISV) theory such as…”
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Nonequilibrium statistical thermodynamics of thermally activated dislocation ensembles: part 1: subsystem reactions under constrained local equilibrium by McDowell, David L.

“…This three-part paper lends new insight into the interpretation of internal state variable (ISV) theory and fundamentals of the behavior of thermally activated…”
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A perspective on trends in multiscale plasticity by McDowell, David L.

“…Research trends in metal plasticity over the past 25 years are briefly reviewed. The myriad of length scales at which phenomena involving microstructure…”
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Systems Approaches to Materials Design: Past, Present, and Future by Arróyave, Raymundo, McDowell, David L

“…There is increasing awareness of the imperative to accelerate materials discovery, design, development, and deployment. Materials design is essentially a…”
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Key computational modeling issues in Integrated Computational Materials Engineering by Panchal, Jitesh H., Kalidindi, Surya R., McDowell, David L.

“…Designing materials for targeted performance requirements as required in Integrated Computational Materials Engineering (ICME) demands a combined strategy of…”
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Effect of grain orientations on fracture behavior of polycrystalline metals by Roy, Ushasi, McDowell, David L., Zhou, Min

“…Currently no systematic approach exists to explicitly quantify the combined effects of anisotropic grain orientations and grain boundary behavior on the…”
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Crystal plasticity investigation of the microstructural factors influencing dislocation channeling in a model irradiated bcc material by Patra, Anirban, McDowell, David L.

“…A continuum crystal plasticity framework is used to study the effect of microstructure and mesoscopic factors on dislocation channeling and flow localization…”
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Micromechanical crystal plasticity back stress evolution within FCC dislocation substructure by Zirkle, Theodore, Zhu, Ting, McDowell, David L.

“…•A micromechanical back stress form is implemented in a crystal plasticity model.•Equations are developed for dislocation density and substructure…”
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Constitutive equations for modeling non-Schmid effects in single crystal bcc-Fe at low and ambient temperatures by Patra, Anirban, Zhu, Ting, McDowell, David L.

“…•A crystal plasticity framework is developed for modeling non-Schmid effects in bcc crystals.•Decay of the non-Schmid stresses with increase in temperature is…”
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Microscale residual stresses in additively manufactured stainless steel by Chen, Wen, Voisin, Thomas, Zhang, Yin, Forien, Jean-Baptiste, Spadaccini, Christopher M., McDowell, David L., Zhu, Ting, Wang, Y. Morris

“…Additively manufactured (AM) metallic materials commonly possess substantial microscale internal stresses that manifest as intergranular and intragranular…”
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Modeling cyclic deformation of austenitic stainless steels at elevated temperatures using a physically-based mesoscale crystal plasticity framework by Zirkle, Theodore, McDowell, David L.

“…Austenitic stainless steels demonstrate significant changes in key macroscale deformation responses at elevated temperatures; these changes are relatively…”
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Failure of metals II: Fatigue by Pineau, André, McDowell, David L., Busso, Esteban P., Antolovich, Stephen D.

“…In this interpretive review, fatigue in metallic systems is considered primarily from the perspective of interactions between the microstructure, the…”
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Mesoscale cyclic crystal plasticity with dislocation substructures by Castelluccio, Gustavo M., McDowell, David L.

“…Constitutive formulations have increasingly focused on physically-based approaches that are less phenomenological and incorporate information from multiple…”
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A dislocation-based constitutive model for viscoplastic deformation of fcc metals at very high strain rates by Austin, Ryan A., McDowell, David L.

“…In this work a physically-based model is developed to address slip in polycrystalline metals and alloys subjected to very high rates of deformation (10 4–10 8…”
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Chemomechanical Origin of Hydrogen Trapping at Grain Boundaries in fcc Metals by Zhou, Xiao, Marchand, Daniel, McDowell, David L, Zhu, Ting, Song, Jun

“…Hydrogen embrittlement of metals is widely observed, but its atomistic origins remain little understood and much debated. Combining a unique identification of…”
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Gaps and Barriers to Successful Integration and Adoption of Practical Materials Informatics Tools and Workflows by McDowell, David L.

“…Preparation of the future materials workforce consistent with major imperatives rooted in integrated computational materials engineering (ICME) and the…”
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Viscoplasticity of heterogeneous metallic materials by McDowell, David L.

“…Viscoplastic behavior of metallic materials is manifested by collective behavior of lattice defects at multiple length scales. The full gamut of length scales,…”
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Bayesian analysis of parametric uncertainties and model form probabilities for two different crystal plasticity models of lamellar grains in α+β Titanium alloys by Venkatraman, Aditya, McDowell, David L., Kalidindi, Surya R.

“…•A three-step Bayesian protocol was developed to estimate parametric uncertainty and model probability of crystal plasticity models.•The protocol was deployed…”
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Simulation-based strategies for microstructure-sensitive fatigue modeling by McDowell, David L.

“…Further efforts to provide more direct dependence of fatigue life estimation methods on microstructure of alloy systems must consider various factors that are…”
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