Publicación: Modelado paramétrico y optimización de árboles de transmisión mediante simulación basada en elementos finitos
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2022
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info:eu-repo/semantics/openAccess
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Universidad Nacional de Educación a Distancia (España), Universidad Politécnica de Madrid. Departamento de Ingeniería Mecánica
Resumen
En el presente trabajo se propone una solución específica para el diseño de árboles de transmisión utilizados en reductores de velocidad de ejes paralelos y engranajes cilíndricos de una, dos y tres etapas, logrando un alto nivel de automatización. La solución consiste en una base de datos de árboles tipificados y parametrizados según su posición dentro del reductor y de los tipos de unión, entre otras consideraciones. Estos árboles sirven como plantillas para alimentar un algoritmo que cuenta con un procedimiento de cálculo y diseño basado en normas técnicas internacionales y recomendaciones recogidas en la literatura especializada. Además, para el cálculo de tensiones y deformaciones, el algoritmo incorpora el análisis por elementos finitos. Luego, los resultados del análisis son utilizados para verificar la resistencia a la fluencia y a la fatiga del árbol, así como su rigidez y su velocidad crítica. Finalmente, mediante un proceso iterativo, el algoritmo minimiza el volumen de material utilizado, asegurando un factor de seguridad definido por el usuario. El algoritmo ha sido implementado como un complemento en el entorno de la plataforma CAD comercial Autodesk Inventor y se ha verificado mediante cálculos analíticos en varios casos de estudio.
In the present work, a specific solution for the design of transmission shafts used in speed reducers with parallel shafts and cylindrical gears of one, two and three stages, achieving a high level of automation is proposed. The solution consists of a database of typified and parameterized shafts according to their position within the reducer and the types of connections, among other considerations. These shafts serve as templates to feed an algorithm that has a calculation and design procedure based on international technical standards and recommendations collected in the specialized literature. In addition, for the calculation of stresses and strains, the algorithm incorporates finite element analysis. The results of the analysis are then used to verify the yield strength and fatigue strength of the shaft, as well as its stiffness and critical speed. Finally, through an iterative process, the algorithm minimizes the volume of material used, ensuring a safety factor defined by the user. The algorithm has been implemented as a plug-in in the Autodesk Inventor commercial CAD platform environment and has been verified by analytical calculations in several case studies.
In the present work, a specific solution for the design of transmission shafts used in speed reducers with parallel shafts and cylindrical gears of one, two and three stages, achieving a high level of automation is proposed. The solution consists of a database of typified and parameterized shafts according to their position within the reducer and the types of connections, among other considerations. These shafts serve as templates to feed an algorithm that has a calculation and design procedure based on international technical standards and recommendations collected in the specialized literature. In addition, for the calculation of stresses and strains, the algorithm incorporates finite element analysis. The results of the analysis are then used to verify the yield strength and fatigue strength of the shaft, as well as its stiffness and critical speed. Finally, through an iterative process, the algorithm minimizes the volume of material used, ensuring a safety factor defined by the user. The algorithm has been implemented as a plug-in in the Autodesk Inventor commercial CAD platform environment and has been verified by analytical calculations in several case studies.
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E.T.S. de Ingenieros Industriales
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Mecánica