Different approaches for woven composite reinforcement forming simulation

Boisse, Philippe; Hamila, Nahiene; Hélénon, Fabrice; Hagege, Benjamin; Cao, Jian

doi:10.1007/s12289-008-0002-7

Cited by 74 publications

(47 citation statements)

References 31 publications

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“…In one of these methods [16][17][18][19][20] specific finite elements are defined that are made of a discrete number of woven unit cells. The mechanical behaviour of these woven cells is obtained essentially by experimental analyses of the woven reinforcement.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of Bending Behaviour of Reinforcements

et al. 2009

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In composite reinforcement shaping, textile preform undergo biaxial tensile deformation, in plane shear deformation, transverse compaction and outof-plane bending deformations. Bending deformations have been neglected in some simulation codes up to now, but taking into account them would give more accurate simulations of forming especially for stiff and thick textiles. Bending behaviour is specific because the reinforcements are structural parts and out of plane properties cannot be directly deduced from in-plane properties, like for continuous material. Because the standard tests are not adapted for stiff reinforcements with non linear behaviour a new flexometer using optical measurements has been developed to test such reinforcements. This new device enables to carry out a set of cantilever tests with different histories of load. A series of tests has been performed to validate the test method and to show the capacities of the new flexometer to identify non linear non elastic behaviour.

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Section: Introductionmentioning

confidence: 99%

Experimental Study of Bending Behaviour of Reinforcements

et al. 2009

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“…Consequently many studies [4][5][6] have been conducted on the experimental determination of the shear mechanical behaviour of woven textiles. Relation between imperfections obtained during the process, like wrinkles, and the limits of the mechanical behaviour of the woven fabric (locking angle, for example) start to being studied but most often by finite element simulation [7][8] than by experimental approach. For the development of finite element tool dedicated to the forming step of woven fabric [8,[9][10] it's necessary to have some experimental results during the forming stage and not only at the end of the process.…”

Section: Introductionmentioning

confidence: 99%

Experimental device for the preforming step of the RTM process

Soulat

Allaoui

Chatel³

2009

Int J Mater Form

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This paper concerns the development of an experimental device which is able to form very complex double curved geometry. Objectives are to analyze the evolution of the woven preform during the forming process. This device contains one mechanical module containing the classical tools in forming process, (punch, blank holder, and open-die), and one optical module to measure the 3D-deformed shape and the distribution of local deformations, like shear angles of the woven reinforcement during all the process. Experimental results are obtained with an interlock carbon woven fabric, used in aeronautical applications. Wrinkling and buckling will be analyzed at the global scale of the piece. The evolution of the shear angle will be presented at local scale (on face, or edges of the geometry).

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“…The main shortcoming of this approach is clearly that the draping results do not depend on the actual fabric configuration, that is the type of weave which ultimately affects the deformability of the fabric. On the other hand, it resembles quite well manual draping operations but not the automated ones since static boundary conditions cannot be applied [2,9,10,19]. Despite some limitations, the kinematic draping is considered more robust than the mechanical one, especially when complex geometries are involved, offering a good compromise between accuracy and computational efforts [3].…”

Section: Numerical Methods For Drapingmentioning

confidence: 99%

On the Sensitivity of Mechanical Properties of Woven-Fabrics to the Draping Process: Static and Dynamic Assessment Through a CAE-Based Approach

Treviso

Farkas²,

Mundo

et al. 2016

Appl Compos Mater

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Manufacturing processes are often considered the final stage of the design. As a matter of fact, it is during the manufacturing that material properties are ultimately determined. This is especially true for composite materials, whose manufacturing processes are often lowly automated and thus subject to the low repeatability of manual operations. Manufacturing simulations tools are becoming available to support the definition of the manufacturing process and assess the manufacturability of composite parts. The present paper proposes a reversed approach to the laminate design process which starts from the manufacturing simulation in order to quantify the impact of the process on the mechanical properties of the as-produced part. An automotive component is chosen and different woven-fabrics structures are considered to determine their sensitivity to the shearing phenomenon. Homogenization of material properties is performed on a local basis, depending on the local geometry modifications undergone by the reinforcement. Stiffness is then predicted through both static and dynamic analysis. In order to prove the effectiveness of the approach, the obtained results are compared to classic laminate modelling.

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Different approaches for woven composite reinforcement forming simulation

Cited by 74 publications

References 31 publications

Experimental Study of Bending Behaviour of Reinforcements

Experimental Study of Bending Behaviour of Reinforcements

Experimental device for the preforming step of the RTM process

On the Sensitivity of Mechanical Properties of Woven-Fabrics to the Draping Process: Static and Dynamic Assessment Through a CAE-Based Approach

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