Quasistatic evolution for dislocation-free finite plasticity [PDF]
arXiv, 2019 We investigate quasistatic evolution in finite plasticity under the assumption that the plastic strain is compatible. This assumption is well-suited to describe the special case of dislocation-free plasticity and entails that the plastic strain is the gradient of a plastic deformation map.
arxiv
Equivalent Plastic Strain Gradient Plasticity with Grain Boundary Hardening and Comparison to Discrete Dislocation Dynamics [PDF]
, 2015 The gradient crystal plasticity framework of Wulfinghoff et al. [53] incorporating an equivalent plastic strain and grain boundary yielding, is extended with additional grain boundary hardening. By comparison to averaged results from many discrete dislocation dynamics (DDD) simulations of an aluminum type tricrystal under tensile loading, the new ...
arxiv +1 more source
Energetic Approach to Large Strain Gradient Crystal Plasticity [PDF]
, 2017 We formulate a problem of the evolution of elasto-plastic materials subjected to external loads in the framework of large deformations and multiplicative plasticity.
Kratochvíl , Jan, Kružík , Martin
core
Metals, 2020 Steel structures are designed to operate in an elastic domain, but sometimes plastic strains induce damage and fracture. Besides experimental investigation, a phase-field damage model (PFDM) emerged as a cutting-edge simulation technique for predicting ...
Jelena Živković +4 more
doaj +1 more source
The mechanisms of grain growth of Mg alloys: A review
Journal of Magnesium and Alloys, 2022 Grain growth directly influences the plasticity and strength of Mg alloys. As the grain size decreases from the microscale to the nanoscale, the plasticity of Mg alloys continually increases, whereas the strength first increases and later decreases ...
Qinghua Chen +8 more
doaj
Simulation of the Hall-Petch effect in FCC polycrystals by means of strain gradient crystal plasticity and FFT homogenization [PDF]
, 2019 The influence of grain size on the flow stress of various FCC polycrystals (Cu, Al, Ag and Ni) has been analyzed by means of computational homogenization of a representative volume element of the microstructure using a FFT approach in combination with a strain gradient crystal plasticity model.
arxiv +1 more source
Numerical treatment of cosserat based rate independent strain gradient plasticity theories
Ingeniería y Ciencia, 2008 The current trend towards miniaturization in the microelectronics industryhas pushed for the development of theories intended to explain the behaviorof materials at small scales.
Juan David Gómez C.
doaj
Strong and ductile medium Mn steel without transformation-induced plasticity effect
Materials Research Letters, 2018 The conventional alloy design of medium Mn steel is to optimize the transformation-induced plasticity (TRIP) effect. Here we show that a dual-phase heterogeneous structure is sufficient to develop a medium Mn steel with high yield strength (∼1.2 GPa) and
B. B. He, M. X. Huang
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Formulation, analysis and solution algorithms for a model of gradient plasticity within a discontinuous Galerkin framework [PDF]
, 2008 Includes bibliographical references (p. [221]-239).An investigation of a model of gradient plasticity in which the classical von Mises yield function is augmented by a term involving the Laplacian of the equivalent plastic strain is presented. The theory
McBride, Andrew Trevor
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Determination of Limiting Deformations at Testing Cylindrical Samples for Tension
Проблеми трибологіїThis paper proposes a method for calculating limiting deformations under conditions of localized deformation during tensile testing. The method for calculating limiting deformations was used to construct plasticity diagrams under conditions of strain ...
I. Iu. Kyrytsya +3 more
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