Search Results for author: Shahed Rezaei

Found 7 papers, 3 papers with code

A finite operator learning technique for mapping the elastic properties of microstructures to their mechanical deformations

no code implementations28 Mar 2024 Shahed Rezaei, Shirko Faroughi, Mahdi Asgharzadeh, Ali Harandi, Gottfried Laschet, Stefanie Reese, Markus Apel

Our method, inspired by operator learning and the finite element method, demonstrates the ability to train without relying on data from other numerical solvers.

Operator learning

Integration of physics-informed operator learning and finite element method for parametric learning of partial differential equations

no code implementations4 Jan 2024 Shahed Rezaei, Ahmad Moeineddin, Michael Kaliske, Markus Apel

We benchmark our methodology against the standard finite element method, demonstrating accurate yet faster predictions using the trained neural network for temperature and flux profiles.

Operator learning

Learning solution of nonlinear constitutive material models using physics-informed neural networks: COMM-PINN

1 code implementation10 Apr 2023 Shahed Rezaei, Ahmad Moeineddin, Ali Harandi

In order to demonstrate the applicability of the methodology in handling complex path dependency in a three-dimensional (3D) scenario, we tested the approach using the equations governing a damage model for a three-dimensional interface model.

Mixed formulation of physics-informed neural networks for thermo-mechanically coupled systems and heterogeneous domains

1 code implementation9 Feb 2023 Ali Harandi, Ahmad Moeineddin, Michael Kaliske, Stefanie Reese, Shahed Rezaei

In this work, we propose applying the mixed formulation to solve multi-physical problems, specifically a stationary thermo-mechanically coupled system of equations.

Transfer Learning

AI enhanced finite element multiscale modelling and structural uncertainty analysis of a functionally graded porous beam

no code implementations2 Nov 2022 Da Chen, Nima Emami, Shahed Rezaei, Philipp L. Rosendahl, Bai-Xiang Xu, Jens Schneider, Kang Gao, Jie Yang

The error range of CNN models leads to an uncertain mechanical performance, which is further evaluated in a structural uncertainty analysis on the FG porous three-layer beam consisting of two thin high-density layers and a thick low-density one, where the imprecise CNN predicted moduli are represented as triangular fuzzy numbers in double parametric form.

A mixed formulation for physics-informed neural networks as a potential solver for engineering problems in heterogeneous domains: comparison with finite element method

1 code implementation27 Jun 2022 Shahed Rezaei, Ali Harandi, Ahmad Moeineddin, Bai-Xiang Xu, Stefanie Reese

Later on, the strong form which has a higher order of derivatives is applied to the spatial gradients of the primary variable as the physical constraint.

Lossless Multi-Scale Constitutive Elastic Relations with Artificial Intelligence

no code implementations5 Aug 2021 Jaber Rezaei Mianroodi, Shahed Rezaei, Nima H. Siboni, Bai-Xiang Xu, Dierk Raabe

To demonstrate the accuracy and the efficiency of the trained CNN model, a Finite Element Method (FEM) based result of an elastically deformed nanoporous beam equipped with the CNN as constitutive law is compared with that by a full atomistic simulation.

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