Textile composite double dome stamping simulation using a non-orthogonal constitutive model

Peng, Xiongqi; Rehman, Zia ur

doi:10.1016/j.compscitech.2011.03.010

Cited by 67 publications

(38 citation statements)

References 22 publications

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“…The choice of material parameters is consistent with published data [5,13,19,20] for a balanced plain weave glass/polypropylene commingled fabric. The value of Young's modulus was taken to be constant (35.4 GPa) in each fibre direction, ignoring any initial non-linearity in the stressstrain curve due to fibre crimp.…”

Section: Materials Model Validationsupporting

confidence: 75%

Inter-ply stitching optimisation of highly drapeable multi-ply preforms

Chen

Endruweit

Harper

et al. 2015

Composites Part A: Applied Science and Manufacturing

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An efficient finite element model has been developed in Abaqus/Explicit to solve highly nonlinear fabric forming problems, using a non-orthogonal constitutive relation and membrane elements to model bi-axial fabrics. 1D cable-spring elements have been defined to model localised inter-ply stitch-bonds, introduced to facilitate automated handling of multi-ply preforms. Forming simulation results indicate that stitch placement cannot be optimised intuitively to avoid forming defects. A genetic algorithm has been developed to optimise the stitch pattern, minimising shear deformation in multi-ply stitched preforms. The quality of the shear angle distribution has been assessed using a maximum value criterion (MAXVC) and a Weibull distribution quantile criterion (WBLQC). Both criteria are suitable for local stitch optimisation, producing acceptable solutions towards the global optimum. The convergence rate is higher for MAXVC, while WBLQC is more effective for finding a solution closer to the global optimum. The derived solutions show that optimised patterns of through-thickness stitches can improve the formability of multi-ply preforms compared with an unstitched reference case, as strain re-distribution homogenises the shear angles in each ply.

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Section: Materials Model Validationsupporting

confidence: 75%

Inter-ply stitching optimisation of highly drapeable multi-ply preforms

Chen

Endruweit

Harper

et al. 2015

Composites Part A: Applied Science and Manufacturing

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“…Engineering fabrics, including shear rate-independent glass fabric at room temperature [7][8][9] and shear rate-dependent co-mingled fabric at high temperature [6,10] have already been formed using this geometry and the accuracy of several biaxial constitutive models in simulating these experiments has been evaluated [6][7][8][9][10][11][12].…”

mentioning

confidence: 99%

Press forming a 0/90 cross-ply advanced thermoplastic composite using the double-dome benchmark geometry

Harrison

Gomes

Correia

2013

Composites Part A: Applied Science and Manufacturing

131

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“…Uniaxial and biaxial tensile behaviours of the studied flax-based woven fabric can also be used as input data for the sheet forming simulation codes [56][57][58] which could be used in an iterative loop to design and optimise the architecture of new reinforcement material that could be used to form complex shape without defects.…”

Section: Discussionmentioning

confidence: 99%

Mechanical characterisation of flax-based woven fabrics and in situ measurements of tow tensile strain during the shape forming

Ouagne

Soulat

Tephany

et al. 2012

Journal of Composite Materials

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Abstract.Forming complex shape composite parts with a good production rate/cost ratio is of particular importance for the automotive industry. The sheet forming of woven reinforcements is a promising technique especially if complex shapes with singularities such as case corners can be obtained. Due to the more and more important recycling needs, the use of flax fibre based reinforcements may be considered for structural or semi-structural parts. During the sheet forming of a tetrahedron shape, the tows constituting the architecture of the reinforcement material are submitted to tensile strains.When using glass or carbon fibre tows, strains to failure are generally not reached. When flax based fabrics are considered, the failure/degradation strength of the tows constituting the fabric may be reached. Even if no apparent failure is visible when observing the tows during forming, the strains measured by a mark tracking method indicate that the degradation limit of particular tows of the preform has been reached. This could lead to local lack of fibre density and to possible zones of weakness for the composite part. As a consequence, it is essential to improve the tensile performances of the tows constituting the fabric without losing their good impregnation characteristics and good ability to reach high mechanical properties for the composite part.

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Textile composite double dome stamping simulation using a non-orthogonal constitutive model

Cited by 67 publications

References 22 publications

Inter-ply stitching optimisation of highly drapeable multi-ply preforms

Inter-ply stitching optimisation of highly drapeable multi-ply preforms

Press forming a 0/90 cross-ply advanced thermoplastic composite using the double-dome benchmark geometry

Mechanical characterisation of flax-based woven fabrics and in situ measurements of tow tensile strain during the shape forming

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