Investigation of the Effect of Geometry Characteristics on Bending Stress of Asymmetric Helical Gears by Using Finite Elements Analysis

Zouridaki, Andromachi-Efsevia; Vasileiou, George

doi:10.3390/computation8010019

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…The basic calculation is initially generated in 2D and later converted to a 3D shape using Boolean operations. The research paper discussed the stresses generated as a result of interlock but did not conduct an analysis of the issue of Transmission Error [6].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

High-Speed Helical Gear Design Parameters Effect on the Dynamic Stress

Hassan,

Hawas,

Abdullah

et al. 2023

MMEP

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Helical gears, due to their increased contact region during the engagement cycle and consequent reduction in noise, have become ubiquitous in mechanical engineering applications and thus form the focal point of this study. This research paper meticulously examines the position of the helix angle and comprehensively evaluates its influence on the reaction force and its evolution on the gear shaft. The results reveal an optimal helix angle of 30 degrees, which minimizes the stress impact on the shaft. In contrast to the typical 40-degree angle, a reduced helix angle of approximately 5 degrees results in the largest displacement along the x-axis for gear 3 at a rotational speed of 590 rad/s, reaching up to 0.15 micrometers. Furthermore, the lowest percentage error can be observed at the 5-degree angle, with a maximum value of 0.8 degrees. A maximum reaction force of 1080 N is observed at a helix angle of 5 degrees, which increases further with the length of the helix. These results provide compelling evidence in favor of the 5-degree angle as opposed to significantly larger angles. The force exerted on the shaft, viewed from two distinct axes, and its temporal evolution are also meticulously examined, providing valuable insights into the dynamic stress of highspeed helical gears.

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Section: Literature Review and Problem Statementmentioning

confidence: 99%

High-Speed Helical Gear Design Parameters Effect on the Dynamic Stress

Hassan,

Hawas,

Abdullah

et al. 2023

MMEP

View full text Add to dashboard Cite

show abstract

“…The parameters of the gear were not studied also. Because of the deviation of the tooth, a nonlinear model was utilized by [6]. Gear boundaries, for example, pressure point, helix point, and so on, influence the conveying limit of stuffed teeth.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Identifying the influence of dimensional parameters on the stresses and deformations of two helical gears

Ahmed

2022

EEJET

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In this research paper, focusing on the basic variables of the gear modeling process and setting its dimensions to see which gears are capable of withstanding transmission operations and its rigidity was done. Because one of the most prominent transmission mechanics is gears, as the types of gears are numerous and common, and one of the most prominent types of gears is the helical gear. The helical gear is one of the most widely used and widespread gears in mechanical fields due to the increase in the contact area during the interlock process, as this increase reduces noise during gear rotation. Three main variables were used to establish the results. The first of which is the pressure angle, the helix deflection angle, and the module number, and they made a number of cases to see which one was able to withstand the movement operations with a proven torque. The results proved that the distortion value in the first case at module 1 was 87×10-6 m, while in module 2 the distortion value was 3.75×10-6. The data are useful and important because the values of the stresses that affect the gears must be known by changing the module due to it gives a stronger concept of the extent to which the gears can withstand movement. Pressure angle is one of the basic variables that change the dimensions of wind turbine gears. The value of the greatest stress was 2.13×108 Pa, but at the pressure angle of 20 degrees, the stress value was 1.93×108 Pa. It affects the diameter, stiffness and tensile strength of a wind turbine. The study of this research paper depends on helical gears. It is known that the angles of the helical teeth increase the large contact area between two gears. From the resulting deformation values, it is noted that the deformation value is 4.26×10-6 m when the helix angle is 20 degrees.

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Investigation of the Effect of Geometry Characteristics on Bending Stress of Asymmetric Helical Gears by Using Finite Elements Analysis

Cited by 2 publications

References 7 publications

High-Speed Helical Gear Design Parameters Effect on the Dynamic Stress

High-Speed Helical Gear Design Parameters Effect on the Dynamic Stress

Identifying the influence of dimensional parameters on the stresses and deformations of two helical gears

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