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Editorial
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: It is a great honor and privilege for me to begin my term as Editor of the JEMT. I have served and contributed to the JEMT for over 20 years as a reviewer, author, guest editor for ...
Stochastic Dislocation Dynamics for Dislocation-Defects Interaction: A Multiscale Modeling Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A stochastic dislocation dynamics (SDD) model is developed to investigate dislocation glide through dispersed obstacles. The model accounts for: 1) the dynamics of the flight process between ...
Multiscale Modeling of Inclusions and Precipitation Hardening in Metal Matrix Composites: Application to Advanced High-Strength Steels
Publisher: American Society of Civil Engineers
Abstract: The strengthening effect of precipitates in metals is investigated within a multiscale approach that utilizes models of various length scales; namely, molecular mechanics (MM), discrete dislocation dynamics (DD), and an ...
Optimum Forming Loading Paths for Pb-Sn Superplastic Sheet Materials
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The bulge forming performance of Pb-Sn superplastic sheet materials is evaluated under different forming pressure-time profiles. In addition, an “optimum” pressure-time profile based on variable ...
Free-Surface Effects in 3D Dislocation Dynamics: Formulation and Modeling
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Recent advances in 3-D dislocation dynamics include the proper treatment of free surfaces in the simulations. Dislocation interaction and slip is treated as a boundary-value problem for which a ...
Soil Arching in Dry Sand: Numerical Simulations Using Double-Slip Plasticity Gradient Model
Publisher: ASCE
Abstract: The arching phenomenon is intrinsic to granular materials and is a manifestation of the effects of their discrete microstructure. The fundamental mechanism of arching is the ability of discrete granular particles to transfer ...
Special Issue on Multi-Scale Modeling of Deformation and Fracture
Publisher: The American Society of Mechanical Engineers (ASME)
Special Issue on Multi-Scale Modeling of Plastic Deformation Phenomena
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The majority of the papers contributed toward this special issue were presented at the symposium “Multi-scale Modeling of Plastic Deformation Phenomena” which was co-chaired by Prof. Tariq Khraishi ...
A Multiscale Model of Plasticity Based on Discrete Dislocation Dynamics
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: We present a framework coupling continuum elasto-viscoplasticity with three-dimensional discrete dislocation dynamics. In this approach, the elastic response is governed by the classical Hooke’s law ...
Determination of Dislocation Interaction Strengths Using Discrete Dislocation Dynamics of Curved Dislocations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In latent interactions of dislocations, junction formation is one of the most important phenomena that contribute to the evolution of strength. In this work, the latent hardening coefficients ...