Evaluación numérica del estado tensional en probetas compactas simuladas y escaneadas//Numerical evaluation of the stress state in simulated and scanned compact specimen

Authors

  • Pavel Michel Almaguer-Zaldivar Universidad de Holguín, Facultad de Ingeniería, Centro de Estudios CAD/CAM. Holguín

Abstract

En este trabajo se presentan los resultados de la evaluación del estado tensionalmediante el método de los elementos finitos en una probeta compacta. Se obtuvieron dos modelos geométricos para realizar las simulaciones. Para el primero se escaneó una probeta real utilizando un escáner 3D Konika Minolta Range 7, mientras que en el segundo se modeló una probeta ideal haciendo uso del software SolidWorks. Se realizó un estudio de convergencia del mallado para determinar el tamaño de elemento finito a utilizar alrededor de la grieta en cada probeta. Se obtuvo que para la probeta escaneada el tamaño de elemento finito era de 1,2 mm, mientras que para la modelada de 1,4 mm. Se obtuvieron las tensiones máximas y los desplazamientos para ambos modelos con un error porcentual entre las tensiones del 7,84 %

Palabras claves: estado tensional, ingeniería inversa, escáner 3D, probeta compacta, simulación numérica.

__________________________________________________________________________________

Abstract

This paper presents the results obtained for the calculation of stresses by means of the finite element method in a compact test specimen. Two geometric models were obtained to perform the simulations. For the first one, a real specimen was scanned using a 3D scanner Konika Minolta Range 7, while for the second an ideal specimen was modeled using the software SolidWorks. It was necessary to carry out a study of the mesh convergence to determine the size of the finite element to be use around the crack in each specimen. In this way it was obtained that for the scanned specimen the size of finite element to be used was of 1,2 mm, whereas for the modeled one was of 1,4 mm. It was obtained the maximum stresses and displacements to both models with a percentage error between the stresses of 7,84 %.

Key words: stress state, inverse engineering, 3D scanner, compact specimen, numerical simulation.

Downloads

Published

2018-05-10

How to Cite

1.
Almaguer-Zaldivar PM. Evaluación numérica del estado tensional en probetas compactas simuladas y escaneadas//Numerical evaluation of the stress state in simulated and scanned compact specimen. Ing. Mec. [Internet]. 2018 May 10 [cited 2025 Sep. 13];21(1):36-44. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/578

Issue

Vol. 21 No. 1 (2018): enero-abril

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).