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1. Optimización del balanceo de un mecanismo plano mediante redistribución de masas.

Author

Orvañanos-Guerrero, María T., Acevedo, Mario, Sánchez, Claudia N., Cisneros-Barba, Juan, Carrasco, Miguel, and Velázquez, Ramiro

Subjects
*MACHINERY, *CARTESIAN coordinates, *MATHEMATICAL optimization, *TRIGONOMETRIC functions, *INTERNAL combustion engines, *MACHINE theory, *CENTER of mass
Abstract

Balancing methods for mechanisms have been used over the years to extend the lifespan of machinery by reducing vibration, wear, and fatigue on their components. These techniques have grown in effectiveness but also in mathematical complexity. Nowadays most balancing methods use Cartesian coordinates, which generate complex equations involving trigonometric functions that are difficult to simplify. This paper presents the use of natural coordinates to obtain the balancing parameters of a simplified crankconnecting rod-slide mechanism avoiding the use of trigonometric functions. The balancing optimization of the mechanism is carried out by using a stochastic optimization algorithm based on populations allowing to reduce the Shaking Moment (ShM) by 97.76% and the Shaking Force (ShF) by 94.58%. [ABSTRACT FROM AUTHOR]

Published
2022

2. Modelos de optimización para el diseño sostenible de cadenas de suministros de reciclaje de múltiples productos.

Author

Feitó Cespón, Michael, Cespón Castro, Roberto, and Rubio Rodríguez, Manuel Alejandro

Subjects
*WASTE recycling, *SUPPLY chain management, *REVERSE logistics, *MATHEMATICAL optimization, *SUSTAINABILITY, *MIXED integer linear programming
Abstract

This paper presents a multi-objective mixed integer non-linear problem (MINLP) to design the sustainable supply chain for recycling several products. This model integrates economical and ecological objectives to support strategic and tactical decisions such as facility location, material flow design and transport selection. The environmental impact is assessed through the Life Cycle Assessment (LCA) methodology using the Eco-indicator 99. A case study to design a supply chain for recycling two kinds of plastic was modeled, the constrain method was used to build the Pareto curve. In the case study were shown a set of indicators to assess the solutions for better supporting of decision-making process. [ABSTRACT FROM AUTHOR]

Published
2016