Interface PINNs (I-PINNs): A physics-informed neural networks framework for interface problems

AK Sarma, S Roy, C Annavarapu, P Roy… - Computer Methods in …, 2024 - Elsevier
We present a novel physics-informed neural networks (PINNs) framework for modeling
interface problems, termed Interface PINNs (I-PINNs). I-PINNs uses different neural networks …

A phase‐field method for modeling cracks with frictional contact

F Fei, J Choo - International Journal for Numerical Methods in …, 2020 - Wiley Online Library
We introduce a phase‐field method for continuous modeling of cracks with frictional
contacts. Compared with standard discrete methods for frictional contacts, the phase‐field …

Adaptive phase-field modeling of fracture in orthotropic composites

I Jain, A Muixí, C Annavarapu, SS Mulay… - Engineering Fracture …, 2023 - Elsevier
An adaptive phase-field method is developed and applied to model fracture propagation in
orthotropic composites. The proposed approach extends the work of Muixí et al.(2020) to …

Multi-material isogeometric topology optimization in multiple NURBS patches

M Zhou, M Xiao, M Huang, L Gao - Advances in Engineering Software, 2023 - Elsevier
In design optimization of structures, design domains are often described by multiple non-
uniform rational B-spline (NURBS) patches. To perform multi-material topological design in …

A barrier method for frictional contact on embedded interfaces

Y Zhao, J Choo, Y Jiang, M Li, C Jiang… - Computer Methods in …, 2022 - Elsevier
We present a barrier method for treating frictional contact on interfaces embedded in finite
elements. The barrier treatment has several attractive features, including:(i) it does not …

Adaptive phase-field modeling of fracture propagation in bi-layered materials

S Khan, A Muixí, C Annavarapu… - Engineering Fracture …, 2023 - Elsevier
We study fracture propagation in bi-layered materials using an adaptive phase-field method.
The method combines a phase-field representation of fracture with spatial adaptivity to …

A robust Nitsche's formulation for interface problems with spline‐based finite elements

W Jiang, C Annavarapu, JE Dolbow… - International Journal for …, 2015 - Wiley Online Library
The extended finite element method (X‐FEM) has proven to be an accurate, robust method
for solving embedded interface problems. With a few exceptions, the X‐FEM has mostly …

Consistent immersed volumetric Nitsche methods for composite analysis

J Wang, G Zhou, M Hillman, A Madra, Y Bazilevs… - Computer Methods in …, 2021 - Elsevier
Generating quality body-fitting meshes for complex composite microstructures is a non-trivial
task. In particular, micro-CT images of composites can contain numerous irregularly-shaped …

[HTML][HTML] A stabilized mixed-FE scheme for frictional contact and shear failure analyses in deformable fractured media

L Wang, C Vuik, H Hajibeygi - Engineering Fracture Mechanics, 2022 - Elsevier
Simulation of fracture contact mechanics in deformable fractured media is of paramount
important in computational mechanics. Previous studies have revealed that compressive …

Block preconditioning for fault/fracture mechanics saddle-point problems

A Franceschini, N Castelletto, M Ferronato - Computer Methods in Applied …, 2019 - Elsevier
The efficient simulation of fault and fracture mechanics is a key issue in several applications
and is attracting a growing interest by the scientific community. Using a formulation based on …