XFEM crack growth virtual monitoring in self-sensing CNT reinforced polymer nanocomposite plates using ANSYS

Rodríguez-Tembleque, Luis; Vargas, José María; García‐Macías, Enrique; Buroni, Federico C.; Sáez, Andrés

doi:10.1016/j.compstruct.2021.115137

Cited by 13 publications

(4 citation statements)

References 68 publications

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“…In XFEM, the traditional finite element approximation is improved by introducing discontinuities in the problem using an extrinsic PU method. In the last two decades, XFEM has been widely used to model crack growth [17] .Cracks in the XFEM mesh are defined by enriching the elements with additional degrees of freedom. The shape function in the finite element follows the PU property.…”

Section: Extended Finite Element Fundamental Theorymentioning

confidence: 99%

Multi-Scale Model Crack Extension Study Based on XFEM

Liu¹,

Chen²

2023

Preprint

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The link of fracture analysis of large ships is an essential part of the structural safety of ships. However, the finite element analysis of large structure according to the traditional method not only has high requirements on the computer, but also the influence of the mesh encryption at special locations makes further requirements on the accuracy of the ship. In this paper, based on the extended finite element method (XFEM) and the multi-point constraint method (MPC), the dynamic crack expansion process of the rectangular plate containing cracks under the multi-scale model is comparatively studied by using ABAQUS simulation software Finally, the applicability of the method is verified by applying the multi-scale model of ship nodes. The results show that the computational effort of the multi-scale model is significantly reduced with the same accuracy and allowable error, which proves the accuracy and efficiency of the method.

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Section: Extended Finite Element Fundamental Theorymentioning

confidence: 99%

Multi-Scale Model Crack Extension Study Based on XFEM

Liu¹,

Chen²

2023

Preprint

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“…As shown in Fig. 21, the percolation mechanism can be described by the formation of random electrically conductive passages that contribute to reduced resistivity [7,70,71]. Electron movement owing to the quantum tunnelling effect is often used for the exploration of electrical conductivity in the quantum domain [7,72].…”

Section: Investigation Of Self-sensing Performance 321 Cnm-reinforced...mentioning

confidence: 99%

Three-dimensional braided composites as innovative smart structural reinforcements

Abedi

Hassanshahi²,

Barros³

et al. 2022

Composite Structures

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“…Exploiting the one-way coupling of piezoresistive materials, their approach employed a sequential two-step procedure [33]: the mechanical problem is solved first, and the resulting strain field is used to update the local electrical conductivity of the material and subsequently obtain a solution for the electrical field. Despite these encouraging results, X-FEM is known to suffer some computational limitations; these include the need for a-priori definition of the location and orientation of the crack, challenges in handling 3D boundary value problems, and difficulties when dealing with multiple interacting cracks, to mention a few.…”

Section: Introductionmentioning

confidence: 99%

Electromechanical phase-field fracture modelling of piezoresistive CNT-based composites

Quinteros¹,

García-Macías²,

Martínez-Pañeda³

2023

Preprint

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We present a novel computational framework to simulate the electromechanical response of selfsensing carbon nanotube (CNT)-based composites experiencing fracture. The computational framework combines electrical-deformation-fracture finite element modelling with a mixed micromechanics formulation. The latter is used to estimate the constitutive properties of CNT-based composites, including the elastic tensor, fracture energy, electrical conductivity, and linear piezoresistive coefficients. These properties are inputted into a coupled electro-structural finite element model, which simulates the evolution of cracks based upon phase-field fracture. The coupled physical problem is solved in a monolithic manner, exploiting the robustness and efficiency of a quasi-Newton algorithm. 2D and 3D boundary value problems are simulated to illustrate the potential of the modelling framework in assessing the influence of defects on the electromechanical response of meso-and macro-scale smart structures. Case studies aim at shedding light into the interplay between fracture and the electromechanical material response and include parametric analyses, validation against experiments and the simulation of complex cracking conditions (multiple defects, crack merging). The presented numerical results showcase the efficiency and robustness of the computational framework, as well as its ability to model a large variety of structural configurations and damage patterns. The deformation-electrical-fracture finite element code developed is made freely available to download.

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XFEM crack growth virtual monitoring in self-sensing CNT reinforced polymer nanocomposite plates using ANSYS

Cited by 13 publications

References 68 publications

Multi-Scale Model Crack Extension Study Based on XFEM

Multi-Scale Model Crack Extension Study Based on XFEM

Three-dimensional braided composites as innovative smart structural reinforcements

Electromechanical phase-field fracture modelling of piezoresistive CNT-based composites

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