Enhancing multiscale simulations with constitutive relations‐aware deep operator networks

Abstract: Multiscale problems are widely observed across diverse domains in physics and engineering. Translating these problems into numerical simulations and solving them using numerical schemes, for example, the finite element method, is costly due to the demand of solving initial boundary‐value problems at multiple scales. On the other hand, multiscale finite element computations are commended for their ability to integrate micro‐structural properties into macroscopic computational analyses using homogenization techniques. Recently, neural operator‐based surrogate models have shown trustworthy performance for solving a wide range of partial differential equations. In this work, we propose a hybrid method in which we utilize deep operator networks for surrogate modeling of the microscale physics. This allows us to embed the constitutive relations of the microscale into the model architecture and to predict microscale strains and stresses based on the prescribed macroscale strain inputs. Furthermore, numerical homogenization is carried out to obtain the macroscale quantities of interest. We apply the proposed approach to quasi‐static problems of solid mechanics. The results demonstrate that our constitutive relations‐aware DeepONet can yield accurate solutions even when being confronted with a restricted dataset during model development.

Location
Deutsche Nationalbibliothek Frankfurt am Main
Extent
Online-Ressource
Language
Englisch

Bibliographic citation
Enhancing multiscale simulations with constitutive relations‐aware deep operator networks ; day:29 ; month:08 ; year:2024 ; extent:9
Proceedings in applied mathematics and mechanics ; (29.08.2024) (gesamt 9)

Creator
Eivazi, Hamidreza
Alikhani, Mahyar
Tröger, Jendrik‐Alexander
Wittek, Stefan
Hartmann, Stefan
Rausch, Andreas

DOI
10.1002/pamm.202400123
URN
urn:nbn:de:101:1-2408291431159.867106948016
Rights
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Last update
15.08.2025, 7:26 AM CEST

Data provider

This object is provided by:
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.

Associated

  • Eivazi, Hamidreza
  • Alikhani, Mahyar
  • Tröger, Jendrik‐Alexander
  • Wittek, Stefan
  • Hartmann, Stefan
  • Rausch, Andreas

Other Objects (12)