Evaluación a fractura de probetas de sección transversal cuadrada solicitadas a torsión cíclica//Fracture evaluation of square transversal section specimens subjected by torsional cyclic loads

Authors

  • Pavel Michel Almaguer Zaldivar
  • Patricia Zambrano Robledo
  • José Alejandro Martínez Grave de Peralta
  • José Ángel Cabral Miramontes
  • Julio César Pino Tarragó

Abstract

En este trabajo se realizó la evaluación del crecimiento de grietas en probetas de sección transversal cuadrada solicitadas por momentos torsores cíclicos simétricos. Las probetas se fabricaron de AISI 1015. Se maquinó una pre-grieta en una cara para inducir el crecimiento de la grieta. La longitud de la grieta con el aumento del número de ciclos se midió mediante el método de los líquidos penetrantes. Mediante el Método de los Elementos Finitos se simuló el estado tensional – deformacional de las probetas. Se determinaron los desplazamientos en la punta de la grieta para aplicar la técnica de los Desplazamientos de Apertura de la Punta de la Grieta para calcular el Factor de Intensidad de Tensiones. Este se relacionó con las dimensiones de la probeta y el tamaño de la grieta para proponer una ecuación para la función de forma. Se propuso una Ley de Paris en el modo de fallo III

Palabras claves: función de forma, ley de parís, torsión cíclica, grieta, Método de los Elementos Finitos.
_____________________________________________________________________

Abstract


In this work, the evaluation of the growth of cracks in specimens of square cross section requested by symmetrical cyclic torsion moments was performed. The specimens were manufactured from AISI 1015. A pre-crack was machined on one side to induce the crack growth. The crack length with the increase in the number of cycles was measured by means of penetrating liquids method. By means of the Finite Element Method, the stress – strain state of the specimens was simulated. The displacements in the tip of the crack were

determined to apply the technique of the Crack Tip Opening Displacements to calculate the Stress Intensity Factor. The calculated Stress Intensity Factor was related to the dimensions of the specimen and the size of the crack to propose an equation for the shape function. A Paris´s Law in mode of failure III was proposed.

Key words: shape function, paris´s law, cyclic torsion, crack, Finite Element Method.

Downloads

Published

2019-06-27

How to Cite

1.
Almaguer Zaldivar PM, Zambrano Robledo P, Martínez Grave de Peralta JA, Cabral Miramontes J Ángel, Pino Tarragó JC. Evaluación a fractura de probetas de sección transversal cuadrada solicitadas a torsión cíclica//Fracture evaluation of square transversal section specimens subjected by torsional cyclic loads. Ing. Mec. [Internet]. 2019 Jun. 27 [cited 2025 Sep. 13];22(3):142-9. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/616

Issue

Vol. 22 No. 3 (2019): septiembre-diciembre

Section

Original article

License

Authors who publish with this journal agree to the following terms:

a. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

b. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

c. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).

Most read articles by the same author(s)