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FEM‐analysis of the friction process in section drawing
Author(s) -
Drossel WelfGuntram,
Hildebrand Martin,
Pawelski Oskar
Publication year - 1998
Publication title -
steel research
Language(s) - English
Resource type - Journals
eISSN - 1869-344X
pISSN - 0177-4832
DOI - 10.1002/srin.199805560
Subject(s) - deformation (meteorology) , finite element method , section (typography) , cross section (physics) , coefficient of friction , friction coefficient , surface (topology) , materials science , mechanics , flow (mathematics) , geometry , structural engineering , engineering , physics , composite material , computer science , mathematics , quantum mechanics , operating system
It is necessary to gain more detailed information about the real frictional conditions in the section drawing process to improve the drawing techniques and to expand the producible section assortment. A deformed surface grid allows to describe local displacements on the workpiece used later on as boundary conditions in an FEM‐calculation. With the knowledge of local frictional coefficients an increase in friction coefficient in drawing direction with curved cross‐sections can be stated. Sharply edged cross‐sections show an additional increase in friction coefficient in the range of high local deformation, i.e. near the edges. This fact influences both the material flow in the forming zone and the straightness of the section. An analysis of the surface topography change by friction and deformation declares the computed distributions of the friction coefficient.