no code implementations • 22 Sep 2024 • Nikita Kartashov, Nikolaos N. Vlassis
A retrained NER model extracts relevant microstructure descriptors from user-provided natural language inputs, which are then used by the DDPM to generate microstructures with targeted mechanical properties and topological features.
no code implementations • 6 May 2024 • Jan Niklas Fuhg, Govinda Anantha Padmanabha, Nikolaos Bouklas, Bahador Bahmani, WaiChing Sun, Nikolaos N. Vlassis, Moritz Flaschel, Pietro Carrara, Laura De Lorenzis
This review article highlights state-of-the-art data-driven techniques to discover, encode, surrogate, or emulate constitutive laws that describe the path-independent and path-dependent response of solids.
no code implementations • 7 Jun 2023 • Nikolaos N. Vlassis, WaiChing Sun, Khalid A. Alshibli, Richard A. Regueiro
In this paper, we introduce a denoising diffusion algorithm that uses a set of point clouds collected from the surface of individual sand grains to generate grains in the latent space.
no code implementations • 24 Feb 2023 • Nikolaos N. Vlassis, WaiChing Sun
The results of this study indicate that the denoising diffusion process is capable of creating microstructures of fine-tuned nonlinear material properties within the latent space of the training data.
no code implementations • 27 Sep 2022 • Ruben Villarreal, Nikolaos N. Vlassis, Nhon N. Phan, Tommie A. Catanach, Reese E. Jones, Nathaniel A. Trask, Sharlotte L. B. Kramer, WaiChing Sun
This new data leads to a Bayesian update of the parameters by the KF, which is used to enhance the state representation.
no code implementations • 30 Jul 2022 • Nikolaos N. Vlassis, WaiChing Sun
The history-dependent behaviors of classical plasticity models are often driven by internal variables evolved according to phenomenological laws.
no code implementations • 29 Nov 2021 • Nikolaos N. Vlassis, Puhan Zhao, Ran Ma, Tommy Sewell, WaiChing Sun
We present a machine learning framework to train and validate neural networks to predict the anisotropic elastic response of the monoclinic organic molecular crystal $\beta$-HMX in the geometrical nonlinear regime.
1 code implementation • 20 May 2021 • Xiao Sun, Bahador Bahmani, Nikolaos N. Vlassis, WaiChing Sun, Yanxun Xu
This paper presents a computational framework that generates ensemble predictive mechanics models with uncertainty quantification (UQ).
no code implementations • 15 Oct 2020 • Nikolaos N. Vlassis, WaiChing Sun
We introduce a deep learning framework designed to train smoothed elastoplasticity models with interpretable components, such as a smoothed stored elastic energy function, a yield surface, and a plastic flow that are evolved based on a set of deep neural network predictions.