Anisotropic mechanical properties and constitutive relations of PTFE coated glass fibers

Zhang, Yingying; Xu, Shanshan; Xue, Jigang; Zhang, Qilin

doi:10.1016/j.compstruct.2017.07.076

Cited by 32 publications

(6 citation statements)

References 22 publications

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“…Li et al [ 17 ] used an improved fiber drawing toughness model to analyze the influence of different environmental factors on the aging properties of coated films. On the models of the cyclic deformation of coated fabrics, Zhang et al [ 18 ] adopted a new viscoelastic model to predict the cyclic deformation of PTFE-coated fabrics. However, their new model was not accurate in predicting the nonlinear deformation during unloading, mainly because the new model did not take into account the nonlinear effect of the coefficient of viscosity.…”

Section: Introductionmentioning

confidence: 99%

Modeling Analysis of Complex Deformation of Woven Coating Film during the Cyclic Tensile Process

Cai,

Zhang,

Cai

et al. 2024

Polymers

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It is difficult for the existing Burgers model to accurately depict the off-axis cyclic drawing process of woven coatings. In this paper, the mechanical deformation of woven PVC (polyvinyl chloride)-coated film at different temperatures is investigated. One-dimensional (1D) and two-dimensional (2D) constitutive models were established to characterize cyclic deformation processes. The 1D model is an improved Burgers model. The effects of the time dependence of the viscosity coefficient and the ratio of elastic to viscous deformation are considered simultaneously. The accuracy of the 1D model for predicting the cyclic nonlinear deformation at different temperatures and loading rates is improved. The 2D model is a nonlinear orthotropic model using polynomials. On the basis of the single-objective genetic algorithm, the inverse algorithm is used to obtain the shear polynomial coefficients in the tension phase and the shear modulus in the unloading phase, which circumvents performing the difficult shear test. UMAT subroutines of off-axis stretching and off-axis cyclic stretching are written separately. The intelligent inverse algorithm program consists of a single-objective genetic algorithm program, a finite element parametric modelling program, and a UMAT subroutine. The simulation results are compared with the off-axis cyclic tensile test data to validate the effectiveness and accuracy of the proposed 2D model for the analysis of the woven PVC-coated films in the tension–shear coupling state.

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Section: Introductionmentioning

confidence: 99%

Modeling Analysis of Complex Deformation of Woven Coating Film during the Cyclic Tensile Process

Cai,

Zhang,

Cai

et al. 2024

Polymers

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show abstract

“…The model can predict the warp strength, weft strength and off-axis strength at high temperatures based on the uniaxial tensile strength in the warp direction at room temperature. Zhang et al 21 investigated the anisotropic mechanical properties and intrinsic structure relationships of PTFE-coated glass fibers. An anisotropic intrinsic structure relationship is proposed through experiments to predict the non-axial creep behavior.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties of flexible composites reinforced with high-performance glass fiber multi-axial warp-knitted fabrics

Li,

Zhao,

2023

Journal of Industrial Textiles

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This paper investigates the quasi-static mechanical properties and damage behavior of flexible composites prepared from high-performance glass fiber-based multi-axial warp knitted fabrics as reinforcement and high tenacity environmentally friendly thermoplastic polyurethane as a matrix. The composites were produced by attaching thermoplastic polyurethane (TPU) to the top and bottom of the fabric using a vulcanization machine, followed by hot-pressing for different temperatures and time settings. Moreover, the effects of different preparation processes on the tensile strength, static puncture resistance, and tear strength of flexible composites were investigated in this paper. The results indicated that both hot-pressing temperature and vulcanization time had a significant impact on the mechanical properties of the composites. With an optimum vulcanization temperature of 185°C and a vulcanization time of 10 min, the composite provides optimum tensile strength and puncture resistance. Tear strength is the worst and is related to the reinforcement’s organisational structure and the interfacial bond’s strength. The results of this study are of theoretical and practical significance for applying high-performance multi-axial warp-knitted flexible composites as raw materials in the construction field.

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“…The mechanical properties of flexible textile composites had been studied on the basis of the uniaxial tensile tests, biaxial tensile tests, shearing tests, etc. [1,[9][10][11][12]. The mechanical properties of flexible textile composites were different from traditional building materials due to complex compositions.…”

Section: Introductionmentioning

confidence: 99%

“…Membrane structure had become one of the important structural systems in modern space structures. In the field of construction, membrane structure materials had been widely used in large-span space structures due to their huge ductility [1]. There were two types of membrane materials, including coated fabrics and thermoplastic compounds [2].…”

Section: Introductionmentioning

confidence: 99%

Response and failure modes of biaxial warp-knitted flexible composite subject to low-velocity impact

Zhao

Liu²,

2021

Journal of Industrial Textiles

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In this paper, biaxial warp-knitted fabrics were produced with different high tenacity polyester linear density and inserted yarns density. The low-velocity impact property of flexible composites made of polyurethane as matrix and biaxial warp-knitted fabric as reinforcement has been investigated. The effect of impactor shape and initial impact energy on the impact response of flexible composite is tested. The results show that the initial impact energy have minor effect on the impact response of the biaxial warp-knitted flexible composites. The impact resistance of flexible composite specimen increases with the increase of high tenacity polyester linear density and inserted yarns density. The damage morphology of flexible composite materials is completely different under different impactor shapes. The findings have theoretical and practical significance for the applications of biaxial warp-knitted flexible composite.

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Anisotropic mechanical properties and constitutive relations of PTFE coated glass fibers

Cited by 32 publications

References 22 publications

Modeling Analysis of Complex Deformation of Woven Coating Film during the Cyclic Tensile Process

Modeling Analysis of Complex Deformation of Woven Coating Film during the Cyclic Tensile Process

Mechanical properties of flexible composites reinforced with high-performance glass fiber multi-axial warp-knitted fabrics

Response and failure modes of biaxial warp-knitted flexible composite subject to low-velocity impact

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