El índice de Robustez como parámetro para evaluar el comportamiento de las transmisiones por engranajes cilíndricos de dientes rectos//The Robustness index as a parameter to evaluate the behavior of spur gears transmissions

Authors

  • Paul Marcelo Tacle Humanante

Abstract

En el presente trabajo se introdujo un nuevo concepto denominado índice de robustez para evaluar la resistencia a la fractura de los engranajes cilíndricos de dientes rectos asimétricos, y se analizó cómo influyen las correcciones y la asimetría del diente en este índice. Para ello se realizó un diseño de experimentos virtual con dos factores de entrada y cinco niveles de experimentación. Se usó el Método de los Elementos Finitos, variando el coeficiente de asimetría del diente entre 1 y 1,35 y el coeficiente de corrección entre cero y 1,25.  De este modo se calcularon las tensiones normales debido a la flexión en los dientes sin modificaciones y en los dientes modificados, evaluándose así el índice de robustez a la flexión. Se concluyó que combinando la asimetría y la corrección se puede aumentar la resistencia a la fractura en un 48 %. 

Palabras claves: engranajes, robustez, tensiones.
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Abstract

In the present paper, a new concept called the robustness index was introduced to evaluate the fracture strength of spur gears with asymmetric teeth, and it was analyzed how the corrections and the tooth asymmetry influence this index. To do this, a virtual design of experiment was carried out with two input factors and five levels of experimentation and the Finite Element Method was used, varying the coefficient of asymmetry of the tooth between 1 and 1.35 and the correction coefficient between zero and 1.25. In this way, the bending stresses in the teeth without and with modifications were calculated, evaluating therefore the robustness index to bending stresses. It was concluded that combining asymmetry and correction the bending strength can be increased by 48 %.

Key words: spur gears, robustness, stresses.

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Published

2019-01-01

How to Cite

1.
Tacle Humanante PM. El índice de Robustez como parámetro para evaluar el comportamiento de las transmisiones por engranajes cilíndricos de dientes rectos//The Robustness index as a parameter to evaluate the behavior of spur gears transmissions. Ing. Mec. [Internet]. 2019 Jan. 1 [cited 2025 Sep. 13];22(1):57-66. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/604

Issue

Vol. 22 No. 1 (2019): enero-abril

Section

Original article

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