Draping simulation of carbon/epoxy plain weave fabrics with non-orthogonal constitutive model and material behavior analysis of the cured structure

Han, Min-Gu; Chang, Seung‐Hwan

doi:10.1016/j.compositesa.2018.04.022

Cited by 32 publications

(11 citation statements)

References 28 publications

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“…According to them, it is necessary to look for more methods that will lead to sufficient accuracy in the three-dimensional drape simulation. One such solution is the precise determination and importation of characteristics of the fabrics in the simulation software, as indicated by Han et al [17].…”

Section: Introductionmentioning

confidence: 99%

Drape of Composite Structures Made of Textile and 3D Printed Geometries

et al. 2022

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Applications of 3D printing in the fashion industry have continued to attract interest from academia and industry in order to improve and add functionalities to products. Among these applications, an interesting one is 3D printing on textile fabric. Composite structures created by 3D printing and textile fabric change a drape by improving or worsening its appearance. The scope of this work is to evaluate the effect of various 3D printed geometries on textile fabric regarding fabric drapes. The drape coefficient of the created composite structure is evaluated using a drape tester built according to EN ISO 9073-9. The results taken are compared with an algorithm developed for determining drape parameters and 3D form representation using color digital images and their image histograms. The measured values of the drape coefficient are close, with a minimal difference, up to 4%. The 3D printed patterns show a significant effect on the drape coefficient of textile fabrics by depicting another way to modify fabric drapes and create complex shapes by using less material. This can be seen as an advantage in the fashion industry where complex geometries can be added to textile fabrics, while changing fabric drape and product personalization and adding functionalities for garments and technical textiles.

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Section: Introductionmentioning

confidence: 99%

Drape of Composite Structures Made of Textile and 3D Printed Geometries

et al. 2022

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“…It is noted that preforms will deform on the mold when manufactured to the final geometry of carbon fiber-reinforced plastic (CFRP) parts (draping). [11][12][13] Preform deformation causes fiber reorientation and may lead to manufacturing defects (wrinkling), which has a substantial influence on the laminate layout and consequent structural performance. 11,12 Therefore, the common approach applied at the design stage, which simplifies the layers as design domains with regular shapes and straight fiber paths rather than actual physical entities, ignores the draping effects on fiber architectures of layers and may result in errors in performance estimation and potentially produce designs that cannot be manufactured.…”

Section: Introductionmentioning

confidence: 99%

“…Faced with such a huge computational gap between the two approaches, scholars often use mechanical methods to perform one-off simulations of specific forming conditions. 11,12 This is typically followed by using kinematic methods for iterative execution to develop the best or most feasible draping strategy, such as the process and cost optimization of aerospace parts. [19][20][21] Further, on the basis of accurate predictions of draping results, a growing number of scholars are working to incorporate process conditions in structural simulations and guide structural designs.…”

Section: Introductionmentioning

confidence: 99%

Integrated design for the forming process and structural performance of variable-thickness laminates

Wang

2022

Proceedings of the Institution of Mechanical Engineers, Part L:

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The manufacturing process of composite laminated parts has a significant influence on the final performance, especially since the draping process can change the predefined fiber orientation at local sites. With the maturing of draping-process simulation technology, an integrated structure–process–performance design has become possible. This article reports a computational framework for the integrated design of the draping process and structural performance of variable-thickness (VT) laminates. The framework is a two-loop optimization workflow. Specifically, a genetic draping optimization method features the inner optimization loop to find the optimal draping strategy and obtain the resulting fiber orientations and manufacturing layout. Structural performance optimization outlines the outer optimization loop, where a parametric method for the physical configuration of VT laminates is proposed to evaluate the structural performance considering the draping strategy. The entire framework is demonstrated by an automotive B-pillar reinforcement. The benefits of incorporating the draping design versus no draping design are illustrated by comparing the corresponding design results. The comparison results show that the integrated design not only contributes to pretreating manufacturing defects but also allows the use of reoriented fiber directions caused by draping to improve the mechanical properties and engage the load bearing. It thus achieves a further weight reduction of 18.63%. This framework facilitates resource-friendly process design, comprehensive performance evaluation, and structurally efficient laminate design.

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“…This approach is simple and fast, but the drape solution is more dependent on the mould geometry, and the solutions are not accurate for geometries which do not have uniformly curved surfaces. Kinematic draping also does not consider the material behaviour and hence results in the same draping pattern regardless of fabric/fibre architecture [8][9][10]. The solid mechanics approach can be applied at the micro roving level, the meso yarn level, and the macroscopic part level.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on draping behaviour of woven carbon fabric

Balakrishnan

Yellur

Roesch

et al. 2021

Journal of Industrial Textiles

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In the liquid composite moulding (LCM) process, fabric is draped over the mould surface and a resin is injected under pressure to develop a composite laminate. Wrinkling is one of the most common flaws that occurs during the draping of the fabric. Wrinkling of the fabric within the composite could severely reduce the quality of the finished composite laminate. Thus, to develop a high-quality composite laminate, exact prediction of fabric wrinkling behaviour is necessary. The aim of the paper is to investigate the draping behaviour of carbon fabric. Carbon fabric with an areal density of 245 g/m2 is used in the study. Both experimental and numerical investigations were performed. An experimental setup was developed to predict the draping behaviour of the carbon fabric used in the study. LS-DYNA/Explicit solver is used to achieve macro level draping simulation. Material model MAT_REINFORCED_THERMOPLASTIC [MAT_249] offers the possibility to simulate the forming behaviour of a thermoplastic material. To simulate dry fabrics using MAT_249, a very low properties are used for the matrix in the material model. To capture the forming behaviour of fabric, an intensive material characterization has been performed. Tensile and shear properties of the fabrics were determined using uniaxial and picture frame tests, respectively. Influence of the position of the integration points from the mid surface on bending behaviour is studied and calibrated using a simple test.

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Draping simulation of carbon/epoxy plain weave fabrics with non-orthogonal constitutive model and material behavior analysis of the cured structure

Cited by 32 publications

References 28 publications

Drape of Composite Structures Made of Textile and 3D Printed Geometries

Drape of Composite Structures Made of Textile and 3D Printed Geometries

Integrated design for the forming process and structural performance of variable-thickness laminates

Experimental and numerical investigation on draping behaviour of woven carbon fabric

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