Finite element simulation and experimental verification of quasi-static compression properties for 3D spacer fabric/hollow microspheres reinforced three phase composites

Yu, Lingjie; He, Xiaoyi; Liang, Fanchao; Meng, Jiaguang; Fu, Sida; Zhi, Chao; Zhang, Yuming; Sun, Fengxin

doi:10.1088/2053-1591/ac0265

Cited by 6 publications

(5 citation statements)

References 24 publications

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“…Therefore, it is assumed that no lateral displacement occurs between the spacer monofilaments and the surface during compression. (5) The difference in structure between the top and bottom layers could cause a lot of friction, and the compressive speed is slow, so the possibility of lateral displacement in the process of compression is very small. It could be assumed that no lateral displacement occurs between layers in the process of compression.…”

Section: Geometrical Modelingmentioning

confidence: 99%

“…4 Hence, WKSF that has been recognized as one of the most promising materials is of great significance for structural uses in aerospace, military, construction, building, transportation, medicine and others. [5][6][7] Compressive property is one of the important properties of WKSF, which not only reflects the intrinsic quality, but also closely related to its performance. It is found that spacer monofilaments play an important role in compression of WKSF.…”

Section: Introductionmentioning

confidence: 99%

Figure 1.(a) Warp-knitted spacer fabric (WKSF); (b) a typical curve of the compressive stress-strain relationship of a WKSF.…”

Section: Introductionmentioning

confidence: 99%

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Numerical characterizations for compressive behaviors of warp-knitted spacer fabrics with multi-layers from simplified finite element model

Liu

Wu³

et al. 2022

Journal of Industrial Textiles

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Warp-knitted spacer fabrics (WKSFs) with multi-layers, one of the extraordinary promising materials, are of great significance for structural uses in aerospace, military, construction, building, transportation, and so on. Compressive property is one of the important properties of WKSFs with multi-layer. In order to better understand the flat plate compressive mechanism of WKSFs with multi-layers, simplified models of WKSFs with multi-layers were constructed and their flat plate compression behaviors were simulated by finite element method. The relationship between the number of layers and compressive performance of WKSFs with multi-layers was studied by combining experiment and finite element simulation. The results showed the spacer monofilaments bear the main stress during the compression process. And the larger stress appears at the inflection point of the spacer monofilaments where the bending is serious and contact points among WKSFs with multi-layers. The compressive stiffness increases with the increase of layers in the later stage of compression. The developed finite element models have successfully simulated the flat plate compression stress-strain relationships of WKSFs with multi-layers, which are basically consistent with the general trend of test results, revealing the compression deformation mechanism and providing theoretical reference for the practical application of WKSFs with multi-layers.

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Section: Geometrical Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical characterizations for compressive behaviors of warp-knitted spacer fabrics with multi-layers from simplified finite element model

Liu

Wu³

et al. 2022

Journal of Industrial Textiles

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“…Various FE models were built by using a single or an array of identical and discrete spacer monofilament of assumed geometry, simplifying the outer layers as isotropic plates, and assigning linear elastic materials. [14][15][16][17] Intermeshed monofilament loops embedded in the outer layers were considered by the FE models in Refs. 18,19 , but the spacer monofilament geometries were still not realistic, and the material models were linear elasticity.…”

Section: Introductionmentioning

confidence: 99%

Analysis of stentering and heat-setting on the structure and compression behavior of 3D mesh fabric using X-ray micro-computed tomography and microscopic modeling

Zheng

Yan-pin

2023

Journal of Industrial Textiles

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Three-dimensional (3D) mesh fabric is a key component in ventilated car seats for its excellent cushioning and ventilating performance. It is produced by stretching an as-knitted spacer fabric with closed surfaces via stentering and fixing the mesh form via heat-setting. This paper analyzes the effect of stentering and heat-setting processes on the structures and compression properties of a typical and commercial 3D mesh fabric by using X-ray micro-computed tomography (μCT) and finite element (FE) models. The monofilament architectures of the fabric after knitting, stentering, and heat-setting are reconstructed from μCT scanning, and the structural evolution is quantitatively investigated in terms of global dimension change, curvature, and torsion. The results from μCT reconstructions demonstrate that stentering shortens, widens, and thins the fabric due to yarn transfer to shorten monofilament loops and lengthen spacer monofilaments, which are then dispersed, bent, and twisted to increase the curvatures and torsions. The FE simulations indicate that the global and local monofilament architecture deformation shifts the fabric compression mode from constrained post-buckling to concurrent tilting and post-buckling of spacer monofilaments, expanding the plateau stage and decreasing plateau stress. Heat-setting shrinks monofilament and therefore deteriorates its mechanical performance. The fabric is further thinned during the heat-setting process, which also further bends and twists spacer monofilaments to slightly decrease the plateau stress. The structures and cushioning performance of 3D mesh fabrics can be engineered by employing a proper stentering ratio followed by a heat-setting process.

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“…[14][15][16] The compression process was reproduced and simulated by means of a finite element model. [17][18][19] In addition, the use of WKSF as reinforcement for cement could improves its stiffness, strength and strain capacity. 20,21 WKSFs can also be used as preforms to produce polyester resin composite panels.…”

mentioning

confidence: 99%

Influences of spacer monofilament distributions on mechanical properties of warp-knitted spacer fabric/resin composites

Liu

Lin

2022

Textile Research Journal

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Warp-knitted spacer fabrics have a unique three-dimensional structure and excellent compressive properties. They can also be used as reinforcement and compounded with base material to obtain composites. In this paper, warp-knitted spacer fabrics with single-sided hexagonal mesh structure were prepared, and the spacer monofilaments were removed in a set ratio to analyze the effects of distribution patterns of them on the tensile and compressive properties of warp-knitted spacer fabrics. Warp-knitted spacer fabric-reinforced epoxy resin-based composites with various structures were prepared to investigate the compressive and bending properties. The results showed that the tensile properties of warp-knitted spacer fabrics were not significantly related to the distribution, but compression performance was correlated with the spacer monofilaments ratio ( n). Fabric-reinforced epoxy resin-based composites of sample no. 1 have the best compression performance, and the best performance in bending is sample no. 5. A different type of warp-knitted spacer fabric could be chosen for achieving the optimal configuration in specific application scenarios. This paper can provide theoretical implications for the application of warp-knitted spacer fabrics and fabric-reinforced epoxy resin-based composites.

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Finite element simulation and experimental verification of quasi-static compression properties for 3D spacer fabric/hollow microspheres reinforced three phase composites

Cited by 6 publications

References 24 publications

Numerical characterizations for compressive behaviors of warp-knitted spacer fabrics with multi-layers from simplified finite element model

Numerical characterizations for compressive behaviors of warp-knitted spacer fabrics with multi-layers from simplified finite element model

Analysis of stentering and heat-setting on the structure and compression behavior of 3D mesh fabric using X-ray micro-computed tomography and microscopic modeling

Influences of spacer monofilament distributions on mechanical properties of warp-knitted spacer fabric/resin composites

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