Examinando por Materia "Manufacturing industries"
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Ítem Análisis de costos para la planta de generación de energía en Enka de Colombia y acciones propuestas para la disminución del costo unitario(Universidad EAFIT, 2018) Lopera Monsalve, Edgar Yamid; Uribe Marín, Ricardo; Giraldo Hernández, Gina MaríaÍtem Dislocation density based flow stress model applied to the PFEM simulation of orthogonal cutting processes of Ti-6Al-4V(MDPI AG, 2020-01-01) Rodríguez, J.M.; Larsson, S.; Carbonell, J.M.; Jonsén, P.; Rodríguez, J.M.; Larsson, S.; Carbonell, J.M.; Jonsén, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Mecatrónica y Diseño de MáquinasMachining of metals is an essential operation in the manufacturing industry. Chip formation in metal cutting is associated with large plastic strains, large deformations, high strain rates and high temperatures, mainly located in the primary and in the secondary shear zones. During the last decades, there has been significant progress in numerical methods and constitutive modeling for machining operations. In this work, the Particle Finite Element Method (PFEM) together with a dislocation density (DD) constitutive model are introduced to simulate the machining of Ti-6Al-4V. The work includes a study of two constitutive models for the titanium material, the physically based plasticity DD model and the phenomenology based Johnson-Cook model. Both constitutive models were implemented into an in-house PFEM software and setup to simulate deformation behaviour of titanium Ti6Al4V during an orthogonal cutting process. Validation show that numerical and experimental results are in agreement for different cutting speeds and feeds. The dislocation density model, although it needs more thorough calibration, shows an excellent match with the results. This paper shows that the combination of PFEM together with a dislocation density constitutive model is an excellent candidate for future numerical simulations of mechanical cutting. © 2020 by the authors.Ítem Financiación de la cadena de suministro y su aplicación a una pyme del sector manufacturero de la ciudad de Bogotá(2018) Bautista Arias, Jorge Andrés; Páez Tapia, Jairo GuillermoThe Supply Chain Management department in a Company is very important and it performance in the right way, will impact to the organization with benefits in the resources that handled -- One of the ways to optimize the resources is called financing supply chain, that is the use of financial procedures and options based in the logistic operation strength instead the financial estates -- The previous one gives alternatives to support the company through financial platforms and entities before, during and after the import of the goods helping the amount of working capital in the operation and can be used avoiding undercapitalization -- The current work explores the financial supply chain method and how it applies in some markets and it requirements -- On the other hand, this study evaluates a margin market like the Colombian due the financing of the companies usually its by formal and informal way but based on financial estates, the common way -- The case was applied to a SME of the cosmetic sector in the city of Bogota and the study delivers an updated analysis to implement financial supply chain, which is the situation of the Colombian market in 2018 and the viability of the implementation -- With the example, we deliver evidence, that at least now, it is not possible the execution due the supply chain it is not connected completely and neither have the right procedures to be connected in financial platformsÍtem Implementación de un Plan de Mantenimiento en una empresa del sector manufacturero(Universidad EAFIT, 2008) Gómez Gómez, María Antonieta; Vallejo Jaramillo, Juan SantiagoÍtem Medición de competitividad empresarial en el sector manufacturero colombiano(Universidad EAFIT, 2015) Echeverri Cardona, Andrea; Canavire Bacarreza, Gustavo JavierLas mediciones de competitividad global y algunas regionales son las más utilizadas y divulgadas, sin embargo hay poca evidencia de un indicador que mida la competitividad a nivel microeconómico -- Esta investigación presenta el diseño y construcción de un indicador de competitividad empresarial aplicado al sector manufacturero colombiano siguiendo la línea metodológica del Foro Económico Mundial y utilizando la información de la Encuesta de Opinión Industrial Conjunta realizada por la Asociación Nacional de Empresario de Colombia –ANDI y otros gremios del sector -- Los resultados señalan que las empresas que pertenecen a la cadena petroquímica, de caucho y plásticos son las más competitivas, así como las del sector metalmecánico y autopartes las menos favorecidas en este tema -- Se sugiere profundizar en el análisis de la investigación y realizar una encuesta que permita obtener mayor información en el corto plazoÍtem Relaciones comerciales de la producción industrial en el mercado interno colombiano(Universidad EAFIT, 2014-12-15) Castro Escobar, Edisson