MOMPA: Multi-objective marine predator algorithm

K Zhong, G Zhou, W Deng, Y Zhou, Q Luo - Computer Methods in Applied …, 2021 - Elsevier
In this paper, a multi-objective version of the recently proposed marine predator algorithm
(MPA) is presented, which is called the multi-objective marine predator algorithm (MOMPA) …

Machine learning-based multi-objective optimization for efficient identification of crystal plasticity model parameters

K Veasna, Z Feng, Q Zhang, M Knezevic - Computer Methods in Applied …, 2023 - Elsevier
A set of constitutive model parameters along with crystallography governs the activation of
deformation mechanisms in crystal plasticity. The constitutive parameters are typically …

Crystal plasticity modeling of strain-induced martensitic transformations to predict strain rate and temperature sensitive behavior of 304 L steels: Applications to …

Z Feng, R Pokharel, SC Vogel, RA Lebensohn… - International Journal of …, 2022 - Elsevier
This paper advances crystallographically-based Olson-Cohen (direct γ→ α') and
deformation mechanism (indirect γ→ ε→ α') phase transformation models for predicting …

Experimental characterization and crystal plasticity modeling for predicting load reversals in AA6016-T4 and AA7021-T79

S Daroju, T Kuwabara, R Sharma, DT Fullwood… - International Journal of …, 2022 - Elsevier
The detailed contribution of microstructural-level phenomena, such as dislocation structure
development and annihilation, as well as inter-granular and intra-granular backstress fields …

Nonlinear optimization for compact representation of orientation distributions based on generalized spherical harmonics

RE Marki, M Knezevic - Journal of the Mechanics and Physics of Solids, 2024 - Elsevier
An orientation distribution is a necessary input in any crystal plasticity simulation. The
computational time involved in crystal plasticity simulations scales linearly with the number …

Analytic model of dislocation density evolution in fcc polycrystals accounting for dislocation generation, storage, and dynamic recovery mechanisms

A Hunter, DL Preston - International Journal of Plasticity, 2022 - Elsevier
An analytic model of the evolution of dislocation density in fcc polycrystals is described. The
evolution equations approximately account for most known dislocation storage, dynamic …

A multiscale investigation on the preferential deformation mechanism of coarse grains in the mixed-grain structure of 316LN steel

Y Li, H Zhang, X Shang, M Liu, S Zhao, Z Cui - International Journal of …, 2022 - Elsevier
Mixed-grain structure with millimeter-grade coarse grains (MCGs) is an intolerable defect
often found in heavy forgings. Eliminating this microstructural defect through …

A crystal plasticity finite element model embedding strain-rate sensitivities inherent to deformation mechanisms: Application to alloy AZ31

WG Feather, DJ Savage, M Knezevic - International Journal of Plasticity, 2021 - Elsevier
The fundamental power-law relationship representing the flow rule in crystal visco-plasticity
ensures uniqueness in the selection of slip systems accommodating imposed plastic strain …

Correlated structure viscoplastic self-consistent polycrystal plasticity: application to modeling strain rate sensitive deformation of Ti-6Al-4 V

IA Riyad, BA McWilliams, B Pramanik… - International Journal of …, 2023 - Elsevier
This paper presents a multi-level viscoplastic self-consistent (VPSC) model for correlated
structures (CS-VPSC). A polycrystalline aggregate response is homogenized over …

Assessing strength of phases in a quadruplex high entropy alloy via high-throughput nanoindentation to clarify origins of strain hardening

J Weiss, E Vasilev, M Knezevic - Materials Characterization, 2024 - Elsevier
This paper describes the main findings from an experimental investigation into local and
overall strength and fracture behavior of a microstructurally flexible, quadruplex, high …