Full contact analysis of wire rope strand subjected to varying loads based on semi-analytical method

Chen, Yuanpei; Meng, Fanzhi; Gong, Xinglong

doi:10.1016/j.ijsolstr.2017.04.004

Cited by 45 publications

(13 citation statements)

References 38 publications

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“…Further, obtain the initial film pressure in region II based on the boundary pressure for region I according to equation (13). Step 2: According to the obtained pressure, solve equations (3) to (8) to obtain the composite elastic deformation of the lubricated surfaces in region I. During this process, the FFT method 24–29 is adopted to accelerate the deformation calculation. Meanwhile, determine the viscosity and density of lubricant in region I by solving equations (9) and (10) based on the known pressure. Step 3: Solve the Reynolds equation expressed with equation (1) for the film pressure in region I pI based on the known film thickness, viscosity, density, and given entertainment velocity of the lubricant. Step 4: Update the pressure at the interface between regions I and II to meet the boundary condition expressed with equation (13). Step 5: Based on the updated boundary pressure, solve equation (14) to obtain the film thickness in region II.…”

Section: Numerical Solutionmentioning

confidence: 99%

“…Step 2: According to the obtained pressure, solve equations (3) to (8) to obtain the composite elastic deformation of the lubricated surfaces in region I. During this process, the FFT method 24–29 is adopted to accelerate the deformation calculation. Meanwhile, determine the viscosity and density of lubricant in region I by solving equations (9) and (10) based on the known pressure.…”

Section: Numerical Solutionmentioning

confidence: 99%

“…In doing so, the fluid field is divided into the two computation domains, in which the usual Reynolds equation and its reduced form are solved numerically. Meanwhile, a fast Fourier transform (FFT) method, [24][25][26][27][28][29] due to its good computation efficiency and accuracy, is adopted to accelerate the calculation of the composite elastic deformation of the ellipsoid contact. Finally, the associated conclusions are drawn.…”

Section: Introductionmentioning

confidence: 99%

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Effect of three-dimensional surface crack on the elastohydrodynamic lubrication performance of ellipsoid contact

Meng

Cui

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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The elastohydrodynamic lubrication model for the ellipsoid contact considering three-dimensional crack effect is established and solved with an under-relaxation algorithm. In doing so, the fluid field is divided into the two computation domains, in which the usual Reynolds equation and its reduced form are solved for the film pressure with the crack effect. Meanwhile, a fast Fourier transform method is adopted to accelerate the deformation calculation. Simulation model is verified. Numerical results show that the crack can cause jumps for the film pressure and film thickness. Increasing the crack length along the rolling direction and the depth at the crack's open end, and decreasing the crack tip inclined angle all result in an increment in the maximum film pressure. In addition, increasing the crack width can make the film pressure within the crack shift towards both ends of the crack width. The crack close to the contact center brings out a large film pressure.

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Section: Numerical Solutionmentioning

confidence: 99%

Section: Numerical Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of three-dimensional surface crack on the elastohydrodynamic lubrication performance of ellipsoid contact

Meng

Cui

2018

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…e characteristics of the WRI are studied through the experimental and theoretical methods [4][5][6][7][8][9][10][11]. Chen et al [12] investigated the contact statues of a steel wire rope from the perspective of theoretical analysis. e result shows that the effect of the lay angle on the stiffness of the wire rope is different under different loads.…”

Section: Introductionmentioning

confidence: 99%

Effect of Structure Parameters on Polycal Wire Rope Isolator Stiffness‐Damping Characteristics

Shan-dong

Zhu

2019

Shock and Vibration

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Wire rope isolators are mainly used to isolate vibration and protect precise equipment. However, the issue of regulation of vibration isolators taking into account the nonlinearity of their characteristics was poorly understood in the modern literature. In this paper, the influence of structural parameters (diameter ratio and lay pitch of the single strand, and lay pitch and bending radius of the wire rope) on stiffness-damping characteristics of the Polycal WRI was investigated by the simplified finite element analysis method. The stiffness and damping prediction models including structural parameters and material properties were established. The results showed that the stiffness-damping characteristics were the best; when the diameter ratio of wire strand was 1.1, the inside layer wire pitch length was 6 times the diameter of the wire strand, the outside layer wire pitch length was 11 times the diameter of the wire strand, the pitch length of the wire rope was 7.5 times its diameter, and the bending radius was equal to 46.5 mm. The errors of the prediction for prestiffness and softened stiffness were within 5%, and the errors of prediction for the energy dissipation coefficient were within 10%.

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“…They also used the conjugate gradient method and the fast Fourier transform to calculate the contact deformation, the contact pressure, and the stress of each wire produced by the interwire contact. On the basis of the semi-analytical method, a full contact analysis of wire rope under various loads was performed by Chen et al 19,20 Also, Wei et al 23 presented a Monte Carlo model for forecasting the mechanical behavior of a fiber yarn that involves statistical variation in fiber strength. With this model, the effects of stochastic fiber breakage and interface sliding on the mechanical characteristics of the fiber are simulated.…”

Section: Introductionmentioning

confidence: 99%

The influence of fiber migration on the mechanical properties of yarns with hierarchical helical structures

Zheng

Liu

2018

The Journal of Strain Analysis for Engineering Design

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An analytical method is presented for studying the influence of fiber migration on the mechanical properties of a yarn with two-level helical structures. The theory of ideal migration is applied to the seven-ply yarn, which results in the exchange of the interior structure of the yarn. A bottom-up method for analyzing the internal forces and stresses of the yarn under axial tension and torsion is developed. The influence of fiber migration is demonstrated by making contrast between the mechanical responses of carbon nanotube yarns with and without fiber migration. The numerical results show that there is a periodical non-monotonic variation in both the internal forces and the stresses with the length of yarn. A stress concentration is revealed around the half-cycle migration point and the one-cycle migration point. It is shown that the chirality, initial helix angle, and the fiber migration pattern can be used to control the mechanical performance of yarns.

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Full contact analysis of wire rope strand subjected to varying loads based on semi-analytical method

Cited by 45 publications

References 38 publications

Effect of three-dimensional surface crack on the elastohydrodynamic lubrication performance of ellipsoid contact

Effect of three-dimensional surface crack on the elastohydrodynamic lubrication performance of ellipsoid contact

Effect of Structure Parameters on Polycal Wire Rope Isolator Stiffness‐Damping Characteristics

The influence of fiber migration on the mechanical properties of yarns with hierarchical helical structures

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