ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
In the present study, the finite element analysis has been conducted to investigate thedeformation characteristics of forward and backward can extrusion process using AA 1100 aluminumalloy tubes in terms of maximum forming load and extruded length ratio in a combined material flow.A commercially available code is used to conduct rigid-plastic FEM simulation. Hollow tubes areselected as initial billets and the punch geometries follow the recommendation of ICFG. Selecteddesign parametrs involved in simulation includes punch nose radius, die corner radius, frictionalcondition, and punch face angle. The investigation is foucused on the analysis of deformation patternand its characteristics in a forward tube extrusion combined simultaneously with backward tubeextrusion process main in terms of force requirements for this operation according to various punchnose radii and backward tube thickness. The simulation results are summarized in terms ofload-stroke relationships for different process parameters such as backward tube thickness, die cornerradii, and punch face angle, respectively, and pressure distributions exerted on die, and comparison ofdie pressure and forming load between combined extrusion and two stage extrusion process insequencial operation. Extensive analyses are also made to investigate the relationships betweenprocess parameters and extruded lengths in both forward and backward directions. It has beenconcluded from simulation results that a) the combined operation is superior to multi-stage extrusionprocess in sequential operation in terms of maximum forming load and maximum pressure exerted ondie, b) the length of forward extruded tube increases and that of backward extruded tube decreases asthe thickness ratio decreases, and c) the forming load is influenced much by the thickness ratio andthe other design factors such as die corner radius and punch face angle does not affect much on theforce requirement for the combined extrusion process
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.519-521.943.pdf
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