TY - CHAP

T1 - Extrusion Benchmark 2007

AU - Pietzka, Daniel

AU - Ben Khalifa, Noomane

AU - Donati, Lorenzo

AU - Tomesani, Luca

N1 - Conference code: 12

PY - 2009

Y1 - 2009

N2 - The demand for specific properties and excellent quality of extruded aluminum profiles stretches to the limit the abilities of extruders and die makers: ever more complex sections, hard alloys, emerging technologies, and microstructure control are only some of the manufacturers’ everyday concerns. Key factors for innovation as well as competitiveness are a skilled engineering analysis and reliable software; however, no reference community exists for the extrusion analyst and a common basis for evaluating commercial codes capabilities is missing. The extrusion benchmark is a conference on the borderline of technology during which researchers, industries, and software suppliers from all over the world will show their competence in predicting the results of a real extrusion activity whose outcome is unknown and participants will get in touch with the major international experts on their use and development. In this paper, the experimental trials for evaluating codes’ capabilities in terms of analyzing real industrial problems are fully described and analyzed. The provided inputs for running the simulations are initially presented: die design, material flow stress, friction conditions, and heat exchanges are suggested to participants with insufficient experience in extrusion simulations. A brief discussion on the die design is reported in order to explain the aim of the organizers in performing testing conditions which emphasize process-related issues. A multi-hole die with four L-shaped orifices was produced with 4 different pocket shapes thus providing valuable information on material flow inside the die at different process conditions. The results of trial tests performed at the University of Dortmund are completely reported and discussed on the basis of profile length, exiting temperature and press load. Finally, a brief discussion on codes’ performance is presented and discussed so as to provide to the audience the state of the art of FEM capabilities applied to the study of the extrusion process.

AB - The demand for specific properties and excellent quality of extruded aluminum profiles stretches to the limit the abilities of extruders and die makers: ever more complex sections, hard alloys, emerging technologies, and microstructure control are only some of the manufacturers’ everyday concerns. Key factors for innovation as well as competitiveness are a skilled engineering analysis and reliable software; however, no reference community exists for the extrusion analyst and a common basis for evaluating commercial codes capabilities is missing. The extrusion benchmark is a conference on the borderline of technology during which researchers, industries, and software suppliers from all over the world will show their competence in predicting the results of a real extrusion activity whose outcome is unknown and participants will get in touch with the major international experts on their use and development. In this paper, the experimental trials for evaluating codes’ capabilities in terms of analyzing real industrial problems are fully described and analyzed. The provided inputs for running the simulations are initially presented: die design, material flow stress, friction conditions, and heat exchanges are suggested to participants with insufficient experience in extrusion simulations. A brief discussion on the die design is reported in order to explain the aim of the organizers in performing testing conditions which emphasize process-related issues. A multi-hole die with four L-shaped orifices was produced with 4 different pocket shapes thus providing valuable information on material flow inside the die at different process conditions. The results of trial tests performed at the University of Dortmund are completely reported and discussed on the basis of profile length, exiting temperature and press load. Finally, a brief discussion on codes’ performance is presented and discussed so as to provide to the audience the state of the art of FEM capabilities applied to the study of the extrusion process.

KW - Engineering

KW - FEM Benchmark

KW - Extrusion

KW - aluminium alloys

KW - die design

KW - experimental benchmark

UR - http://hdl.handle.net/11585/77845

M3 - Article in conference proceedings

SN - 978-1-874-37642-2

BT - NAFEMS Wold Congress: The Analysis Advantage

PB - International Association for the Engineering Modelling, Analysis and Simulation Community

T2 - International Association for the Engineering Analysis Community World Congress - 2009

Y2 - 16 June 2009 through 19 June 2009

ER -