[HTML][HTML] Neural network-based multiscale modeling of finite strain magneto-elasticity with relaxed convexity criteria

KA Kalina, P Gebhart, J Brummund, L Linden… - Computer Methods in …, 2024 - Elsevier
We present a framework for the multiscale modeling of finite strain magneto-elasticity based
on physics-augmented neural networks (NNs). By using a set of problem specific invariants …

A framework for polyconvex large strain phase-field methods to fracture

C Hesch, AJ Gil, R Ortigosa, M Dittmann… - Computer Methods in …, 2017 - Elsevier
Variationally consistent phase-field methods have been shown to be able to predict complex
three-dimensional crack patterns. However, current computational methodologies in the …

[HTML][HTML] Nonlinear elastic vector solitons in hard-magnetic soft mechanical metamaterials

Q Zhang, AV Cherkasov, C **e, N Arora… - International Journal of …, 2023 - Elsevier
We propose a design of a metamaterial for magnetically tunable propagation of nonlinear
vector solitary waves. The metamaterial consists of a periodic array of units of hard-magnetic …

[HTML][HTML] Nonlinear electro-elastic finite element analysis with neural network constitutive models

DK Klein, R Ortigosa, J Martínez-Frutos… - Computer Methods in …, 2024 - Elsevier
In the present work, the applicability of physics-augmented neural network (PANN)
constitutive models for complex electro-elastic finite element analysis is demonstrated. For …

[HTML][HTML] Electro-mechanical actuation modulates fracture performance of soft dielectric elastomers

MA Moreno-Mateos, M Mehnert, P Steinmann - International Journal of …, 2024 - Elsevier
Soft dielectric elastomers respond to electric stimuli by undergoing large deformations and
changes in their material properties. The actuation with deformable electrodes attached to …

Learning nonlinear constitutive models in finite strain electromechanics with Gaussian process predictors

A Pérez-Escolar, J Martínez-Frutos, R Ortigosa… - Computational …, 2024 - Springer
This paper introduces a metamodelling technique that employs gradient-enhanced
Gaussian process regression (GPR) to emulate diverse internal energy densities based on …

A new framework for large strain electromechanics based on convex multi-variable strain energies: variational formulation and material characterisation

AJ Gil, R Ortigosa - Computer Methods in Applied Mechanics and …, 2016 - Elsevier
Following the recent work of Bonet et al.(2015), this paper postulates a new convex multi-
variable variational framework for the analysis of Electro Active Polymers (EAPs) in the …

[HTML][HTML] Cooling and energy-saving performance of different green wall design: A simulation study of a block

J Li, B Zheng, W Shen, Y **ang, X Chen, Z Qi - Energies, 2019 - mdpi.com
To mitigate the urban heat island (UHI) and release the low carbon potential of green walls,
we analyzed the cooling and energy-saving performance of different green wall designs …

Constitutive modeling of magneto-viscoelastic polymers, demagnetization correction, and field-induced Poynting effect

K Haldar - International Journal of Engineering Science, 2021 - Elsevier
Magneto-active polymers are polymer-based composites consisting of magnetizable micro-
particles embedded in an elastomeric matrix material. The presence of magnetic particles …

Gradient enhanced gaussian process regression for constitutive modelling in finite strain hyperelasticity

N Ellmer, R Ortigosa, J Martínez-Frutos… - Computer Methods in …, 2024 - Elsevier
This paper introduces a metamodelling technique that leverages gradient-enhanced
Gaussian process regression (also known as gradient-enhanced Kriging), effectively …