Multiscale modeling and tensile behavior analysis of uniaxial reinforced warp‐knitted composites

Li, Jie; Yan, Ying; Tian, Zhiyuan; Hong, Yang; Ye, Jinxin; Guo, Fangliang

doi:10.1002/pc.25133

Cited by 8 publications

(8 citation statements)

References 29 publications

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“…The three-dimensional geometric model of composite spring was established by the ABAQUS software. [35] The spring wire was transverse-isotropic, and the direction of material property is defined and shown in Figure 4(A), where direction 1 was fiber direction, directions 2 and 3 were transverse direction. The loading mode of the composite spring was fixed at the bottom and loaded at the top, which was consistent with the testing as presented in Figure 4(B).…”

Section: Finite Element Modelmentioning

confidence: 99%

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

et al. 2020

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The helical spring is an essential mechanical component of automobile and machinery and has been widely used in industrial application. The weight reduction is the requirement of current material design and also the research trend for material development. In this study, a novel composite helical spring with "skin-core" structure was designed and fabricated with an integrated formation process based on the vacuum-assisted resin infusion technology. Based on the different function of skin and core, the skin structure was weft knitting tube made of aramid and ultra-high molecular weight polyethylene fiber, and the core structure was unidirectional carbon fiber. By selecting material for knitting tube and adjusting the volume content of carbon fiber core, the static and fatigue compression properties of composite helical spring were investigated. It has been found that the spring torsion and bending performance can be improved by wrapping the core with the knitting tube as the spring wire. Moreover, the finite element method was applied to further analyze the stress evolution of the "skin-core" composite helical spring during compression and fatigue. The results of compression test and simulation show that the spring stiffness can be effectively improved by using knitting tube and increasing the content of carbon fiber. The stress of the spring cross section is concentrated in the internal radial region of 180 , and the distribution of the corresponding cross sections is relatively uniform. The "skin-core" structure with aramid knitting tube as the outer skin and carbon fiber as the spring core significantly improves the load-carrying capacity and stability of the composite spring. The proposed lightweight helical composite could provide a replacement strategy of existing metal or unidirectional filament reinforced springs used in the engineering applications.

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Section: Finite Element Modelmentioning

confidence: 99%

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

et al. 2020

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“…The finite element method (FEM) is one of the most effective tools for simulating the mechanical behavior of composite. [ 15 ] Since the difficulty in conducting mechanical behavior at lower and higher temperature, the behavior of composite at different temperature could be simulated by means of FEMs. Gao et al [ 16 ] established the finite element (FE) model of biaxial warp‐knitted composites with Texgen software and simulated the tensile behavior with ABAQUS.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical research of temperature on tensile properties of multiaxial warp‐knitted composites

Gao

Yang

2020

Polymer Composites

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A study on tensile behavior of composites reinforced with triaxial and quadriaxial warp-knitted glass fabrics were carried out in 0 , 45 , and 90 directions at temperature of −30 C, 0 C, 20 C, and 40 C. The stress-strain character, normalized strength, normalized modulus, failure strain, and the relationships between strength and temperature were also obtained. The failure mechanism was also analyzed based on the fracture mode and scanning electron microscopy morphology of composites. In addition, to obtain influence related with reinforcement structure, the tensile behavior of the quadriaxial warp-knitted composite was simulated on the basis of unit cell model and compared with the experimental one. Results show that the tensile properties were decreased with the increase of temperature. The ultimate normalized strength of triaxial and quadriaxial warp-knitted composites were decreased by 14.18% and 18.13%. The fracture morphology was consistent with the simulation ones.

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“…reported a meso‐model considering the strain rate effect to investigate the dynamic in‐plane compressive properties of the warp‐knitted composites. Li et al . established a unit cell containing the knitting yarns and the resin‐rich regions, and found that the knitting yarns had negative effects on the tensile stiffness and strength.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on three‐point bending behaviors of unidirectional warp‐knitted composites

Hong

Yan

Guo

et al. 2019

J of Applied Polymer Sci

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This study develops a novel specimen model, which considers the progressive damage of the layers, the knitting yarns, and the interlaminar cohesive zone, to investigate the flexural properties and the interlaminar shear properties of the unidirectional warpknitted composites. Three-point bending tests are conducted as verification of the numerical model. Improved strain-based Hashin criteria are proposed to analyze the shear nonlinearity. Results show that specimens with small span-to-thickness ratios exhibit obvious nonlinear behaviors and the corresponding simulation results are sensitive to the value of the shear nonlinear factor. Failure mechanism and stress distributions are analyzed based on numerical simulations. The effect of the specimen size on bending behaviors is discussed. The influence of the width is found to be negligible but that of the span-to-thickness ratio is significant. The ranges of the span-tothickness ratio corresponding to different failure modes are given.

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Multiscale modeling and tensile behavior analysis of uniaxial reinforced warp‐knitted composites

Cited by 8 publications

References 29 publications

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

Composite helical spring with skin‐core structure: Structural design and compression property evaluation

Experimental and numerical research of temperature on tensile properties of multiaxial warp‐knitted composites

Experimental and numerical investigation on three‐point bending behaviors of unidirectional warp‐knitted composites

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