Cord/Rubber Material Properties

Cembrola, R. J.; Dudek, T. J.

doi:10.5254/1.3536096

Cited by 30 publications

(12 citation statements)

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“…The geometry of the spherical pipe is simply determined by the structure vector H = [L, r, Rα , θ 0 ] T , where L, r, Rα and θ 0 represents the axial length, the circumferential radius at the end, the meridional radius, and the initial winding angle, respectively. The single-layer cord/rubber lamina can be regarded as orthotropic material [15]. The equivalent elastic constants of the lamina can be obtained with the following equations [16]…”

Section: Theoretical Analysis 21 Materials Model Of the Reinforced Layermentioning

confidence: 99%

Axial and lateral stiffness of spherical self-balancing fiber reinforced rubber pipes under internal pressure

Shuai

2021

Science and Engineering of Composite Materials

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Fiber reinforced rubber pipes are widely used to transport fluid at locations requiring flexible connections in pipeline systems. The spherical self-balancing fiber reinforced rubber pipes with low stiffness are drawing attention because of their vibration suppression performance under high internal pressure. In this paper, a theoretical model is proposed to calculate the axial stiffness and lateral stiffness of spherical self-balancing fiber reinforced rubber pipes. The inhomogeneous anisotropy of the reinforced layer and the nonlinear stress-strain relationship of the reinforced fiber are considered in the model. The accuracy of the model is verified by experimental results. Theoretical calculation finds that both the axial and lateral stiffness are influenced significantly by the key structural parameters of the pipe (the axial length, the circumferential radius at the end, the meridional radius, and the initial winding angle). The stiffness can be reduced remarkably with optimal meridional radius and initial winding angle, without any side effect on the self-balance of the pipe. The investigation methods and results presented in this paper will provide guidance for design of fiber reinforced rubber pipes in the future.

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Section: Theoretical Analysis 21 Materials Model Of the Reinforced Layermentioning

confidence: 99%

Axial and lateral stiffness of spherical self-balancing fiber reinforced rubber pipes under internal pressure

Shuai

2021

Science and Engineering of Composite Materials

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“…Since three-dimensional analysis requires the input of the shear modulus in the plane perpendicular to the cord, it was assumed that it is twice as large as the one related to the ply plane [15].…”

Section: Properties Of a Single-ply Tyre Cordmentioning

confidence: 99%

Towards realistic simulation of deformations and stresses in pneumatic tyres

Pelc

2007

Applied Mathematical Modelling

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The paper presents a full three-dimensional finite element model of pneumatic tyre. The inclusion of a special node to the model enabled to analyse the problem of static tyre-road contact under vertical, lateral or longitudinal external forces. The hyperelastic properties of rubber are described with the use of the elastic strain energy density function in the form of the third degree polynomial. Incompressibility is taken into account by means of the Lagrange multiplier-in the form of mean hydrostatic pressure determined within each finite element. Particular attention was paid to the directional properties of cord ply treated as monotropic linear-elastic material characterized by effective material constants. These properties were introduced into the model by overlaying the elements with monotropic material on those representing rubber. The total Lagrangian description with the Green-Lagrange strain tensor and the energetically conjugate to it the second Piola-Kirchhoff stress tensor were applied to the tyre model. The results of a truck tyre analysis concerning displacements and delamination stresses distribution show good accuracy of the pneumatic tyre modelling technique proposed in the paper.

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“…For the flexible composites, most researchers tend to study tensile behaviors with the effects of fiber orientations, mechanical properties and failure behaviors at low loading rates. Several fiber-reinforced elastomers were studied in these works [4][5][6][7]. Cord-rubber composites are one of the most interesting flexible composites because they have been widely used in the tire industry.…”

Section: Introductionmentioning

confidence: 99%