An adaptive floating node based formulation for the analysis of multiple delaminations under quasi-static loading

Guillem Gall Trabal; Brian Lau Verndal Bak; Boyang Chen; Esben Lindgaard

doi:10.1016/j.compositesa.2022.106846

An adaptive floating node based formulation for the analysis of multiple delaminations under quasi-static loading

Guillem Gall Trabal, Brian Lau Verndal Bak, Boyang Chen, Esben Lindgaard^*

^*Corresponding author for this work

Aerospace Structures & Computational Mechanics

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

A novel and efficient numerical formulation for the modelling of multiple delaminations growth in laminated composite materials subjected to quasi-static loading is presented. The proposed formulation alleviates the high computational cost associated with models featuring cohesive elements by using a novel Adaptive Refinement Scheme and an Adaptive Floating Node Method Element to refine the model effectively during the analysis without modifying the global finite element connectivity. The formulation has been implemented in a MATLAB finite element code and validated with single and multiple delamination numerical models with varying mode mixities. The new formulation provides accurate results comparable to standard fully refined finite element models while drastically lowering the computational time of the analysis.

Original language	English
Article number	106846
Journal	Composites Part A: Applied Science and Manufacturing
Volume	156
DOIs	https://doi.org/10.1016/j.compositesa.2022.106846
Publication status	Published - 2022

Keywords

Adaptive refinement
Cohesive element
Delamination
Floating node method
Laminated composite structures

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10.1016/j.compositesa.2022.106846

1-s2.0-S1359835X22000409-main-1Final published version, 2.09 MBLicence: CC BY

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title = "An adaptive floating node based formulation for the analysis of multiple delaminations under quasi-static loading",

abstract = "A novel and efficient numerical formulation for the modelling of multiple delaminations growth in laminated composite materials subjected to quasi-static loading is presented. The proposed formulation alleviates the high computational cost associated with models featuring cohesive elements by using a novel Adaptive Refinement Scheme and an Adaptive Floating Node Method Element to refine the model effectively during the analysis without modifying the global finite element connectivity. The formulation has been implemented in a MATLAB finite element code and validated with single and multiple delamination numerical models with varying mode mixities. The new formulation provides accurate results comparable to standard fully refined finite element models while drastically lowering the computational time of the analysis.",

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author = "Trabal, {Guillem Gall} and Bak, {Brian Lau Verndal} and Boyang Chen and Esben Lindgaard",

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AU - Trabal, Guillem Gall

AU - Bak, Brian Lau Verndal

AU - Chen, Boyang

AU - Lindgaard, Esben

PY - 2022

Y1 - 2022

N2 - A novel and efficient numerical formulation for the modelling of multiple delaminations growth in laminated composite materials subjected to quasi-static loading is presented. The proposed formulation alleviates the high computational cost associated with models featuring cohesive elements by using a novel Adaptive Refinement Scheme and an Adaptive Floating Node Method Element to refine the model effectively during the analysis without modifying the global finite element connectivity. The formulation has been implemented in a MATLAB finite element code and validated with single and multiple delamination numerical models with varying mode mixities. The new formulation provides accurate results comparable to standard fully refined finite element models while drastically lowering the computational time of the analysis.

AB - A novel and efficient numerical formulation for the modelling of multiple delaminations growth in laminated composite materials subjected to quasi-static loading is presented. The proposed formulation alleviates the high computational cost associated with models featuring cohesive elements by using a novel Adaptive Refinement Scheme and an Adaptive Floating Node Method Element to refine the model effectively during the analysis without modifying the global finite element connectivity. The formulation has been implemented in a MATLAB finite element code and validated with single and multiple delamination numerical models with varying mode mixities. The new formulation provides accurate results comparable to standard fully refined finite element models while drastically lowering the computational time of the analysis.

KW - Adaptive refinement

KW - Cohesive element

KW - Delamination

KW - Floating node method

KW - Laminated composite structures

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VL - 156

JO - Composites Part A: Applied Science and Manufacturing

JF - Composites Part A: Applied Science and Manufacturing

M1 - 106846

ER -

An adaptive floating node based formulation for the analysis of multiple delaminations under quasi-static loading

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Keywords

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