Experimental Investigation of Load Sharing in Multiple Gear Tooth Contact Using the Stress‐Optical Method of Caustics

Spitas, Vasilios; Papadopoulos, George Α.; Spitas, Christos; Costopoulos, Theodore N.

doi:10.1111/j.1475-1305.2008.00558.x

Cited by 27 publications

(12 citation statements)

References 17 publications

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“…In the process of pumping of the oil products, drilling mud containing solid-phase particles there is an abrasive wear of surfaces of friction pairs, which that conducts to a leakage of liquid and reduce a resource of work of the equipment [6][7][8]. Working capacity, reliability, fire and environmental safety of production objects significantly depends on perfection, reliability and resource of work of heavy-duty friction pairs, and condensed elements of different function.…”

Section: Introductionmentioning

confidence: 99%

Optimization of geometry of the sealing cuff of the piston of volumetric oil and gas hydraulic aggregates

2017

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Abstract. The use of modern sealing elements of volumetric hydroaggregates in the oil and gas industry is hampered by lack of scientifically based constructive decisions. The implementation of this complex and urgent challenge is possible due to optimization of geometry of the elastic seal (cuff) by criterion of uniform distribution of contact tensions on all its length that it will promote uniform wear of the seal. It is possible to manage this process change of initial geometry of the cuff.

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Section: Introductionmentioning

confidence: 99%

Optimization of geometry of the sealing cuff of the piston of volumetric oil and gas hydraulic aggregates

2017

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“…Gradually the application field of the method became broader and since then it has been used for the study of mixed‐mode loading problems [3], dynamic loading conditions [4, 5], plasticity problems [6] and triaxial effects [7]. It has been used also for the determination of the J‐integral [8–10], for the solution of problems with large elastic deformations [11], for the measurement of contact forces [12, 13], the determination of the crack tip position [14, 15] and for fatigue problems [16]. Today the method is still under intensive study and development and various materials are studied with it including birefrigent materials [17], anisotropic materials [18, 19], rock‐like materials [20], composite and nano‐composite materials [21, 22].…”

Section: Introductionmentioning

confidence: 99%

The Optical Method of Reflected Caustics Applied for a Plate With a Central Hole: Critical Points and Limitations

Pazis

Agioutantis

Kourkoulis

2011

Strain

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Some critical points related to the applicability of the optical method of reflected caustics in the case of a plate with a central hole are explored in the present paper. The study is carried out in a combined experimental and numerical procedure: poly-methyl-meth-acrylate plates with a central hole are subjected to uniaxial tension and the diameter of the caustics developed is measured for various load steps from a series of successive photographs with the aid of suitable software. The remote stress is then calculated according to the method of caustics and the results are compared with those of the load cell. In addition, the finite element method is employed for the determination of the stress field and the shape and magnitude of the plastic zones around the hole. Conclusions are drawn concerning the range of the external load for which the results of the method of caustics are valid as a function of the relative dimension of the width of the plate versus the diameter of the hole. In addition, the factors influencing the results of the method are considered and the sensitivity of the results to the even the slightest misalignments of the experimental set-up, to the kind of the optical setup preferred and to the slightest deviation from flatness of the lateral faces of the plate is pointed out. This sensitivity of the method was proved to be responsible for discrepancies between theory and experiment, which sometimes exceed 100%.KEY WORDS: caustics, finite element method, plate with a central hole, poly-methyl-meth-acrylate Ó

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“…Some of them are the studies of J. I. Pedrero et al [15], M. Ristivojević et al [16], V. Spitas et al [17] and S. Li et al [18]. These researches determined the values of load sharing ratio with various methods including analytical method, experiment or finite element analysis.…”

Section: Load Sharing Ratio Of a Spur Gear Pairmentioning

confidence: 99%

Spur and Helical Gear Sliding Loss Model with Load Distribution Pattern on Gear Tooth Surface

Ponchai¹,

Phraeknanthoe²,

Ratanasumawong³

2018

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Abstract.The model for estimation of spur and helical gear sliding loss with load distribution pattern on gear tooth surface is presented in this paper. The load distribution for the spur gear is considered to distribute uniformly along the line of contact. During double teeth meshing, load sharing ratio between meshing teeth is considered to be 33:67 percent or 45:55 percent. For the helical gear the load distribution can be calculated by the method proposed by Niemann and Richter. The contour plots of load distribution on gear tooth surface conform to the tooth contact patterns obtained experimentally. The sliding losses estimated from the presented method are compared with the estimations done by the former model and also the experimental results. It is found that the sliding losses calculated from the presented method are closer to the experimental results than the estimations from the former model. The effects of the helix angle and pressure angle on the sliding loss can also be estimated correctly by the presented method.

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Experimental Investigation of Load Sharing in Multiple Gear Tooth Contact Using the Stress‐Optical Method of Caustics

Cited by 27 publications

References 17 publications

Optimization of geometry of the sealing cuff of the piston of volumetric oil and gas hydraulic aggregates

Optimization of geometry of the sealing cuff of the piston of volumetric oil and gas hydraulic aggregates

The Optical Method of Reflected Caustics Applied for a Plate With a Central Hole: Critical Points and Limitations

Spur and Helical Gear Sliding Loss Model with Load Distribution Pattern on Gear Tooth Surface

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