Análisis dinámico por elementos finitos del conjunto soporte captador de alta frecuencia de un tren subterráneo//Dynamic analysis for finite elements to the support of the captator of high frequency of an underground train
Abstract
El objetivo de este trabajo fue la determinación del estado de los esfuerzos dinámicos en varios modelos del soporte del sistema de pilotaje automático de un tren subterráneo con el empleo del Método de los Elementos Finitos a partir de la densidad espectral de potencia de las cargas y las aceleraciones máximas determinadas con anterioridad en evaluaciones extensométricas realizadasal mismo, teniendo en cuenta las frecuencias propias de oscilación del conjunto de alta frecuencia (High Frequency, HF). Como resultado de esta investigación se determinó que los altos valores de tensiones que aparecieron en este elemento fueron la causa de la aparición de las grietas y su desarrollo trajo como consecuencia la aparición de elevados niveles de vibraciones, lo que conllevó
al descontrol en el funcionamiento del sistema y la necesidad de su reparación o sustitución prematura. Se diseñó y analizó un nuevo modelo de soporte, más rígido, donde conjuntamente con la elevación de la resistencia, se mejora notablemente su comportamiento ante las cargas dinámicas.
Palabras claves: análisis dinámico, elementos finitos, vibraciones, transporte ferroviario.
______________________________________________________________________________
Abstract
The objective of this work was the determination of the state of the dynamic loads in several models of the support of the system of automatic pilotage of an underground train with the employment of the Method of the Finite Elements starting from the spectral density of power of the loads and the maximum accelerations determined previously in extensometrics evaluations carried out to the same one, keeping in mind the frequencies characteristic of oscillation of the group of high frequency (HF for its initials in English). As a result of this investigation it was determined that the high values of tensions that they appeared in this element they were the cause of the appearance of the cracks and
its development resulted in the appearance of high levels of vibrations, what bore to the decontrols in the operation of the system and the necessity of its repair or premature substitution. It was designed and a new model of support, more rigid, analyzed where together with the elevation of the resistance, is improves her behavior notably before the dynamic loads.
Key words: dynamic analysis, finite elements, vibrations, rail transportation.
Downloads
How to Cite
1.
González‐Becerra A, Estrada-Cingualbres RA. Análisis dinámico por elementos finitos del conjunto soporte captador de alta frecuencia de un tren subterráneo//Dynamic analysis for finite elements to the support of the captator of high frequency of an underground train. Ing. Mec. [Internet]. 2015 Jan. 1 [cited 2025 Sep. 13];18(1):23-30. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/505
Issue
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).