Challenges in representing the biaxial mechanical behavior of woven fabrics modeled by beam finite elements with contact

Júnior, Celso Jaco Faccio

doi:10.1016/j.compstruct.2020.113330

Cited by 7 publications

(19 citation statements)

References 47 publications

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“…The contact of the interlaced tows was modeled using the penalty method along with the Coulomb law with a friction coefficient measured by pulling the fabrics between two compressed plates in Gorczyca-Cole’s work. 23 To further improve the model efficiency, Faccio Júnior and Gay Neto 24 modeled individual tows as structural beams by constructing the warp and weft tows as beams with wavy mid-surfaces. Isotropic material properties were used, and the bending stiffness was multiplied by a reduction factor to match the experimental results.…”

Section: Introductionmentioning

confidence: 99%

A textile architecture-based discrete modeling approach to simulating fabric draping processes

Wei

Zhang

2023

Journal of Industrial Textiles

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Fabric draping, which is referred to as the process of forming of textile reinforcements over a 3D mold, is a critical stage in composites manufacturing since it determines the fiber orientation that affects subsequent infusion and curing processes and the resulting structural performance. The goal of this study is to predict the fabric deformation during the draping process and develop in-depth understanding of fabric deformation through an architecture-based discrete Finite Element Analysis (FEA). A new, efficient discrete fabric modeling approach is proposed by representing textile architecture using virtual fiber tows modeled as Timoshenko beams and connected by the springs and dashpots at the intersections of the interlaced tows. Both picture frame and cantilever beam bending tests were carried out to characterize input model parameters. The predictive capability of the proposed modeling approach is demonstrated by predicting the deformation and shear angles of a fabric subject to hemisphere draping. Key deformation modes, including bending and shearing, are successfully captured using the proposed model. The development of the virtual fiber tow model provides an efficient method to illustrate individual tow deformation during draping while achieving computational efficiency in large-scale fabric draping simulations. Discrete fabric architecture and the inter-tow interactions are considered in the proposed model, promoting a deep understanding of fiber tow deformation modes and their contribution to the overall fabric deformation responses.

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Section: Introductionmentioning

confidence: 99%

A textile architecture-based discrete modeling approach to simulating fabric draping processes

Wei

Zhang

2023

Journal of Industrial Textiles

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“…Van Ravenhorst and Akkerman 22 established a mathematical model that included the yarn interaction to achieve a satisfactory braid angle for circular braiding, and discussed the effort of yarn interaction on convergence zone length. Faccio Junior and NetoGay 23 developed a contract model to represent yarn interaction, with yarns represented by geometrically correct beams and a master-master contact strategy used to properly address yarn interaction. Ben Boubaker et al 24–26 deduced the expression of the reaction force exerted by yarn at the contacted points based on the Timoshenko beam theory.…”

Section: Introductionmentioning

confidence: 99%

The matching relation analysis of yarn pre-tension in weaving 3D bi-directional angle-interlock fabrics

Cui

et al. 2022

Journal of Industrial Textiles

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Yarn pre-tension is an important technological parameter in the weaving process and significantly affects the geometry and properties of woven composites. 3D bi-directional angle-interlock (3DBA) fabrics have the same yarn crimp in the warp and weft directions, which requires a special matching relationship between the warp and weft yarn tensions applied in the weaving process. This study focused on obtaining the pre-tension matching relationship that applied between the warp and weft yarns in the weaving of 3DBA fabrics. A quasi-static mechanical model of yarn interactions in the weaving of 3DBA fabrics was developed based on the 2D woven fabric yarn interaction model. The weaving process of 3DBA fabrics could be divided into two interweaves as one cycle. In a given interweaving of a single group of yarns, the pre-tension applied to the warp yarns tends to increase irregularly with the position of the interweaving point and varies linearly with the weft pre-tension. The weft crimps distribution of 3DBA fabrics was compared when yarns were applied to the different proportions of pre-tension in the weaving process. The experiment result shows that the sample with the best uniform distribution of yarn geometry is the one to which the yarn pre-tension calculated by the model is applied in the weaving process. The result provides theoretical support for warp and weft pre-tension applied in the 3DBA fabrics weaving process.

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“…Comparison between experimental and computational results of the biaxial mechanical behavior of a textile. Extracted from [1]. .…”

Section: List Of Figuresmentioning

confidence: 99%

“…74 Shear angle response with respect to the normalized shear force applied [2]. 75 77 Biaxial tension results, "Experimental" in black from [7], "Surface" in blue from [1], and "Spline" in red from the spline-based contact formulation. .…”

Section: List Of Figuresmentioning

confidence: 99%

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Uma formulação de contato C¹ baseada em splines: aplicações têxteis

Faccio Júnior

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O contato entre corpos é um fenômeno complexo que envolve interação mecânica, atrito, transferência de calor, entre outros fatores. Uma abordagem comum (e conveniente) para interação mecânica em um ambiente de elementos finitos é usar diretamente a geometria dos elementos para formular a interação por contato. A principal desvantagem dessa abordagem está na existência de arestas agudas formadas, por exemplo, pela junção de elementos finitos retilíneos ou não-suaves que podem levando a singularidades de contato. Para contornar este problema, particularmente no contexto de contatos viga-a-viga, o presente trabalho propõe uma formulação de elementos de contato baseada em curvas splines C 1 . A formulação baseada em splines é desenvolvida para lidar com cenários de contato conforme (distribuído) e não-conforme (pontual). Uma estratégia de três critérios é introduzida para auxiliar no processo de tomada de decisão entre cenários de contato conforme e não-conforme. A formulação baseada em splines proposta pode ser anexada diretamente a qualquer formulação envolvendo elementos finitos de viga quadráticos, garantindo uma descrição suave para esses elementos. Uma lei específica de interação de contato normal não-linear e um modelo reológico para atrito já estabelecido, ambos com contribuições elásticas e viscosas, são adotados aumentando as possibilidades em aplicações práticas. Para demonstrar algumas possibilidades de aplicação, vários exemplos são explorados, incluindo comparações diretas com uma formulação de contato superfície-a-superfície e uma formulação alternativa de contato suave, além de exemplos desafiadores envolvendo contatos conformes e não-conformes e aplicações têxteis.Palavras-chave: Spline. Contato normal não-linear. Atrito. Contato pontual. Contato conforme.

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Challenges in representing the biaxial mechanical behavior of woven fabrics modeled by beam finite elements with contact

Cited by 7 publications

References 47 publications

A textile architecture-based discrete modeling approach to simulating fabric draping processes

A textile architecture-based discrete modeling approach to simulating fabric draping processes

The matching relation analysis of yarn pre-tension in weaving 3D bi-directional angle-interlock fabrics

Uma formulação de contato C¹ baseada em splines: aplicações têxteis

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