A dissipative constitutive model for woven composite fabric under large strain

Denis, Yvan; Guzman-Maldonado, E.; Hamila, Nahiene; Colmars, Julien; Morestin, Fabrice

doi:10.1016/j.compositesa.2017.11.018

Cited by 25 publications

(6 citation statements)

References 53 publications

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“…Possible expansions of the presented bending model could focus on more detailed investigation and modelling of the hitherto neglected plasticity and hysteresis behaviour. This could provide additional knowledge and a deeper material comprehension, similar to the inplane approaches presented by Denis et al [50] for dissipative constitutive models. Regarding thicker materials, suitable modelling approaches should account for transversal shear, for instance by using a second gradient approach [51].…”

Section: Resultsmentioning

confidence: 87%

Comparative experimental and numerical analysis of bending behaviour of dry and low viscous infiltrated woven fabrics

Poppe

Rosenkranz

Dörr

et al. 2019

Composites Part A: Applied Science and Manufacturing

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Wet compression moulding (WCM) provides high-volume production potential for continuous fibre-reinforced composite components via simultaneous draping and infiltration. Experimental and theoretical investigations proved strong mutual dependencies between resin flow and fabric deformation, which are not fully understood yet. This limits development of suitable process simulation methods and applies in particular for the characterisation of infiltrated bending behaviour-essential for an accurate prediction of draping effects. Therefore, a comparative characterisation of the bending behaviour of dry and infiltrated woven fabrics is presented using a modified cantilever and a rheometer bending test. Experimental results reveal both, rate-and viscosity-dependencies. A comparison of the quantitative results exposed an explicable systematic deviation between the two tests, whereas qualitative results are comparable. Finally, Finite Element forming simulations, comprising two bending models corresponding to cantilever and rheometer test are performed to evaluate the experimental findings on component level.

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Section: Resultsmentioning

confidence: 87%

Comparative experimental and numerical analysis of bending behaviour of dry and low viscous infiltrated woven fabrics

Poppe

Rosenkranz

Dörr

et al. 2019

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

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“…This is to be expected to be valid also for draping processes of engineering textiles including binders, which is not investigated so far. Besides this, currently much effort is done to further improve material modeling regarding rate de pendency [162,206] and also with respect to dissipative effects for non monotonous loading [209]. Regarding the different types of fiber ar chitectures, a focus on woven textiles can be recognized [210 213] and, in contrast, NCF are only investigated sparsely so far [160,214 216].…”

Section: Forming Simulationmentioning

confidence: 99%

Fast processing and continuous simulation of automotive structural composite components

Henning

Kärger

Dörr

et al. 2019

Composites Science and Technology

120

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Due to application-specific tailoring, continuous fiber reinforced plastics (CoFRP) provide an exceptional lightweight potential and are particularly suited for structural components. The use of CoFRP specifically for weight reduction of the automotive car body is the major focus of this feature article. Automotive mass production requires fast and qualified, thus highly automated and material efficient manufacturing technologies. Consequently, CoFRP manufacturing for automotive differs considerably from conventional CoFRP manufacturing for aerospace, particularly in terms of higher throughput with higher investment, but lower operating effort. Furthermore, automotive structures have smaller dimensions with more complex shapes, which makes it more challenging to avoid forming defects and to ensure complete injection. Since manufacturing makes the main difference between automotive and aerospace composite components, this feature article puts emphasis on the process technologies and on the corresponding material behavior and process simulation methods. For a holistic product design of automotive CoFRP components, a simultaneous virtual description and virtual optimization of both manufacturing process and structural capacity is necessary. Production effects must be considered in the part design and, thus, must be reliably predicted by process simulation as well as taken into account in subsequent simulation steps. This feature article therefore evaluates the current state of the art in the continuous virtual representation of CoFRP process chains, including the process steps forming, injection and curing. Furthermore, the integrated optimization along this CAE chain is a key factor for an economic part design and therefore another major subject of this article.

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“…The deformation behavior is achieved by an elastic‐plastic constitutive law. Material models applied by Denis et al, 17 Behrens et al, 18 or Gerbaud et al 19 also include plastic terms to consider dissipative contributions. To take account into the temperature dependent forming behavior, the material parameters are defined as function of temperature.…”

Section: Introductionmentioning

confidence: 99%

Thermo‐mechanical modeling of the temperature dependent forming behavior of thermoplastic prepregs

Ziegs

Weck

Gude

et al. 2021

Engineering Reports

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Numerical optimization of the manufacturing process of hybrid lightweight structures consisting of fiber‐reinforced plastics is of great importance. This article introduces an industry‐oriented modeling approach for the thermoforming process of thermoplastic prepregs. A laminate model combined with established elastic‐plastic constitutive laws is used for the numerical treatment of the temperature dependent material behavior of the composite. The mechanical properties of the Polyamide 66 (PA66) matrix are acquired from a data sheet provided by the manufacturer. Experiments including tensile, shear, and bending tests are performed to characterize the effective deformation behavior of the prepreg in the full temperature range. Appropriate model parameters are determined to represent the temperature dependent deformation behavior of the composite according to the experimental observations. The parameterized material model for the prepreg is eventually applied in the simulation of thermoforming processes to show the influence of process and material parameters on the forming behavior of thermoplastic prepregs.

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A dissipative constitutive model for woven composite fabric under large strain

Cited by 25 publications

References 53 publications

Comparative experimental and numerical analysis of bending behaviour of dry and low viscous infiltrated woven fabrics

Comparative experimental and numerical analysis of bending behaviour of dry and low viscous infiltrated woven fabrics

Fast processing and continuous simulation of automotive structural composite components

Thermo‐mechanical modeling of the temperature dependent forming behavior of thermoplastic prepregs

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