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Main Title: CFD simulation of the Abrasive Flow Machining process
Author(s): Uhlmann, Eckart
Schmiedel, Christian
Wendler, J.
Type: Article
Language Code: en
Abstract: For the Abrasive Flow Machining (AFM) process, a highly viscous polymeric carrier mixed with abrasive grain is used for deburring, edge rounding and the general improvement of surface quality of workpieces with complex geometries. At present, time-consuming and expensive feasibility studies and parameter analyses are required for each new application. According to a market study of 2012, more than 50% of AFM users request the availability of a process simulation to model and optimize the flow and predict the results by use of numerical methods. The key challenge is the accurate description of the complex behavior of the viscoelastic abrasive medium. This paper examines a CFD approach to the flow simulation by integrating the non-Newtonian, shear-thinning characteristics of a Maxwell fluid into the inelastic Navier-Stokes equations. With the implementation of the viscoelastic material model in ANSYS CFX, physically reasonable results can be achieved and validated by experimental machining results of additively manufacturedSLM workpieces. The results for flat, reference workpieces as well as for turbine bladesare discussed and compared to experimental results.
Issue Date: 2015
Date Available: 14-May-2018
DDC Class: 620 Ingenieurwissenschaften und zugeordnete Tätigkeiten
Subject(s): Abrasive Flow Machining
selective laser melting
additive manufacturing
Journal Title: Procedia CIRP
Publisher: Elsevier
Publisher Place: Amsterdam
Volume: 31
Publisher DOI: 10.1016/j.procir.2015.03.091
Page Start: 209
Page End: 214
ISSN: 2212-8271
Appears in Collections:FG Werkzeugmaschinen und Fertigungstechnik » Publications

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