Search Results for author: Xiaolong He

Found 9 papers, 2 papers with code

Weak-Form Latent Space Dynamics Identification

1 code implementation20 Nov 2023 April Tran, Xiaolong He, Daniel A. Messenger, Youngsoo Choi, David M. Bortz

With WLaSDI, the local latent space is obtained using weak-form equation learning techniques.

Investigating the Correlation between Force Output, Strains, and Pressure for Active Skeletal Muscle Contractions

no code implementations9 Oct 2023 Karan Taneja, Xiaolong He, John Hodgson, Usha Sinha, Shantanu Sinha, J. S. Chen

Experimental observations suggest that the force output of the skeletal muscle tissue can be correlated to the intra-muscular pressure generated by the muscle belly.

Data-Driven Modeling of an Unsaturated Bentonite Buffer Model Test Under High Temperatures Using an Enhanced Axisymmetric Reproducing Kernel Particle Method

no code implementations24 Sep 2023 Jonghyuk Baek, Yanran Wang, Xiaolong He, Yu Lu, John S. McCartney, J. S. Chen

In deep geological repositories for high level nuclear waste with close canister spacings, bentonite buffers can experience temperatures higher than 100 {\deg}C. In this range of extreme temperatures, phenomenological constitutive laws face limitations in capturing the thermo-hydro-mechanical (THM) behavior of the bentonite, since the pre-defined functional constitutive laws often lack generality and flexibility to capture a wide range of complex coupling phenomena as well as the effects of stress state and path dependency.

A Multi-Resolution Physics-Informed Recurrent Neural Network: Formulation and Application to Musculoskeletal Systems

no code implementations26 May 2023 Karan Taneja, Xiaolong He, Qizhi He, J. S. Chen

This work presents a multi-resolution physics-informed recurrent neural network (MR PI-RNN), for simultaneous prediction of musculoskeletal (MSK) motion and parameter identification of the MSK systems.

Transfer Learning

Certified data-driven physics-informed greedy auto-encoder simulator

1 code implementation24 Nov 2022 Xiaolong He, Youngsoo Choi, William D. Fries, Jonathan L. Belof, Jiun-Shyan Chen

A parametric adaptive greedy Latent Space Dynamics Identification (gLaSDI) framework is developed for accurate, efficient, and certified data-driven physics-informed greedy auto-encoder simulators of high-dimensional nonlinear dynamical systems.

Deep autoencoders for physics-constrained data-driven nonlinear materials modeling

no code implementations3 Sep 2022 Xiaolong He, Qizhi He, Jiun-Shyan Chen

In this study, the applicability of the proposed approach is demonstrated by modeling nonlinear biological tissues.

Thermodynamically Consistent Machine-Learned Internal State Variable Approach for Data-Driven Modeling of Path-Dependent Materials

no code implementations1 May 2022 Xiaolong He, Jiun-Shyan Chen

Characterization and modeling of path-dependent behaviors of complex materials by phenomenological models remains challenging due to difficulties in formulating mathematical expressions and internal state variables (ISVs) governing path-dependent behaviors.

gLaSDI: Parametric Physics-informed Greedy Latent Space Dynamics Identification

no code implementations26 Apr 2022 Xiaolong He, Youngsoo Choi, William D. Fries, Jon Belof, Jiun-Shyan Chen

To maximize and accelerate the exploration of the parameter space for the optimal model performance, an adaptive greedy sampling algorithm integrated with a physics-informed residual-based error indicator and random-subset evaluation is introduced to search for the optimal training samples on the fly.

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