Simulation of CFRP components subjected to dynamic crash loads

Waimer, Matthias; Siemann, Martin; Feser, Thomas

doi:10.1016/j.ijimpeng.2016.11.011

Cited by 41 publications

(8 citation statements)

References 26 publications

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“…The adopted failure criterion was strain-based. It was preferred over the energy-based, as an energy-based criterion requires data from double cantilever beam (DCB) and end-notched flexure (ENF) tests, which were not available [ 24 , 43 , 44 ]. DCB and ENF tests are used to obtain mode I and mode II fracture toughness, respectively, of composite materials.…”

Section: Methodsmentioning

confidence: 99%

“…Use of advanced numerical tools can help reduce these monetary and time costs by aiding prediction of component, assembly, and full-scale behavior [ 11 ]. To aid prediction quality, material cards need to be calibrated using a trial-and-error approach at an element level [ 18 , 19 , 20 , 21 , 22 , 23 ] or calculated using analytical models based on experimental data available [ 24 ]. Trial-and-error approaches are time consuming and it is not always possible to obtain all the data required for analytical models.…”

Section: Introductionmentioning

confidence: 99%

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Predicting Composite Component Behavior Using Element Level Crashworthiness Tests, Finite Element Analysis and Automated Parametric Identification

et al. 2020

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Fibre reinforced plastics have tailorable and superior mechanical characteristics compared to metals and can be used to construct relevant components such as primary crash structures for automobiles. However, the absence of standardized methodologies to predict component level damage has led to their underutilization as compared to their metallic counterparts, which are used extensively to manufacture primary crash structures. This paper presents a methodology that uses crashworthiness results from in-plane impact tests, conducted on carbon-fibre reinforced epoxy flat plates, to tune the related material card in Radioss using two different parametric identification techniques: global and adaptive response search methods. The resulting virtual material model was then successfully validated by comparing the crushing behavior with results obtained from experiments that were conducted by impacting a Formula SAE (Society of Automotive Engineers) crash box. Use of automated identification techniques significantly reduces the development time of composite crash structures, whilst the predictive capability reduces the need for component level tests, thereby making the development process more efficient, automated and economical, thereby reducing the cost of development using composite materials. This in turn promotes the development of vehicles that meet safety standards with lower mass and noxious gas emissions.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Predicting Composite Component Behavior Using Element Level Crashworthiness Tests, Finite Element Analysis and Automated Parametric Identification

et al. 2020

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“…Abq_ply_Fabric has the potential to sustain a progressive stiffness degradation and provides a homogeneous orthotropic linear elastic formulation with damage initiation and evolution laws. Such laws based on fracture energies ensure that the correct amount of energy dissipates [29] [30] [31] [32].…”

Section: Numerical Modelingmentioning

confidence: 99%

Comparative Study of Energy Absorption Capability of Flat Plate Coupons Made by CFRP Plain Weave Fabric Composites

Lombarkia¹,

Gakwaya²,

Nandlall³

et al. 2021

WJM

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Despite years of governmental and academic institutions' researches, no experimental standards are established for evaluating crush Specific Energy Absorption SEA for plain weave fabric woven carbon-fiber-reinforced composites used in modern aircraft structures as elements of the boxes to mitigate damage during crush events. At the laboratory scale, this paper proposes a comparative study of energy absorption capability of flat plate coupons made by CFRP plain weave fabric composites. A new fixture design and setup were created with hydraulic pressure and drop tower machines to carry out tests of flat plate composite specimens under quasi-static and low velocity on-axis crash loading. For investigating parameters sensibility of triggers and layups, numerical and experimental results of four trigger types and three stacking sequences were compared. A confrontation between experimental and predeveloped UL-Crush numerical material model results confirms that coupons with 0˚ oriented central plies and saw teeth or corrugated triggers dissipates higher energy during crush, compared to coupons with 90˚ or 45˚ oriented central plies and chamfer 45˚ or steeple triggers. An efficient and simplified experimental methodology was developed to measure and investigate different parameters influencing SEA of composites under crush load. Comparison between experimental and UL-Crush material model confirms the performance of such simulation tool.

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“…delamination, was not considered here. This material model was previously used by other researchers, who successfully managed to simulate the crushing behaviour of this type of material [39,40]. It assumes a linear-elastic response up to failure for fibre-dominated damage, i.e.…”

Section: Materials Responsementioning

confidence: 99%

Assessing the current modelling approach for predicting the crashworthiness of Formula One composite structures

Dalli

Varandas

Catalanotti

et al. 2020

Composites Part B: Engineering

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This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Simulation of CFRP components subjected to dynamic crash loads

Cited by 41 publications

References 26 publications

Predicting Composite Component Behavior Using Element Level Crashworthiness Tests, Finite Element Analysis and Automated Parametric Identification

Predicting Composite Component Behavior Using Element Level Crashworthiness Tests, Finite Element Analysis and Automated Parametric Identification

Comparative Study of Energy Absorption Capability of Flat Plate Coupons Made by CFRP Plain Weave Fabric Composites

Assessing the current modelling approach for predicting the crashworthiness of Formula One composite structures

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