Dynamic tensile fracture of iron: Molecular dynamics simulations and micromechanical model based on dislocation plasticity

VV Pogorelko, AE Mayer - International Journal of Plasticity, 2023 - Elsevier
Molecular dynamics (MD) shows a difference in the mechanisms of fracture of iron under
uniaxial and isotropic tension. Uniaxial tension leads to the formation of a complex …

Statistical model calibration and design optimization under aleatory and epistemic uncertainty

Y Jung, H Jo, J Choo, I Lee - Reliability Engineering & System Safety, 2022 - Elsevier
Statistical model calibration is a framework for inference on unknown model parameters and
modeling discrepancy between simulation and experiment through an inverse method in the …

Settlement-based framework for long-term serviceability assessment of immersed tunnels

C Tang, SY He, WH Zhou - Reliability Engineering & System Safety, 2022 - Elsevier
In immersed tunnels, the considerable settlement that can develop during their long-term
service period may induce structural damage that affects normal operations (ie …

Reliable neural networks for regression uncertainty estimation

T Tohme, K Vanslette, K Youcef-Toumi - Reliability Engineering & System …, 2023 - Elsevier
While deep neural networks are highly performant and successful in a wide range of real-
world problems, estimating their predictive uncertainty remains a challenging task. To …

GSR: A generalized symbolic regression approach

T Tohme, D Liu, K Youcef-Toumi - arXiv preprint arXiv:2205.15569, 2022 - arxiv.org
Identifying the mathematical relationships that best describe a dataset remains a very
challenging problem in machine learning, and is known as Symbolic Regression (SR). In …

[HTML][HTML] Modified Taylor impact tests with profiled copper cylinders: Experiment and optimization of dislocation plasticity model

ES Rodionov, VV Pogorelko, VG Lupanov, PN Mayer… - Materials, 2023 - mdpi.com
Current progress in numerical simulations and machine learning allows one to apply
complex loading conditions for the identification of parameters in plasticity models. This …

Dynamic deformation and fracture of brass: Experiments and dislocation-based model

ES Rodionov, VV Pogorelko, VG Lupanov… - International Journal of …, 2024 - Elsevier
In this work, we perform a comprehensive study of the dynamic deformation and fracture of
brass, including Taylor tests with classical and profiled cylinders and ball throwing …

Examination of machine learning method for identification of material model parameters

VV Pogorelko, AE Mayer, EV Fomin… - International Journal of …, 2024 - Elsevier
In this work, we compare two methods of using artificial neural network (ANN) to determine
the optimal parameters of material model by results of high-speed plate impact experiments …

MESSY Estimation: Maximum-entropy based stochastic and symbolic density estimation

T Tohme, M Sadr, K Youcef-Toumi… - arXiv preprint arXiv …, 2023 - arxiv.org
We introduce MESSY estimation, a Maximum-Entropy based Stochastic and Symbolic
densitY estimation method. The proposed approach recovers probability density functions …

Speeding up genetic programming based symbolic regression using gpus

R Zhang, A Lensen, Y Sun - Pacific Rim International Conference on …, 2022 - Springer
Symbolic regression has multiple applications in data mining and scientific computing.
Genetic Programming (GP) is the mainstream method of solving symbolic regression …