ISSN:
1662-8985
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:
2D finite element model with the same material for backup to minimize the burr size wasdeveloped to investigate mechanism of burr formation and burr minimization. The flowstress of theworkpiece and backup material are taken as a function of strain, strain-rate and temperature.Temperature-dependent material properties are also considered. The Cockroft-Latham damagecriterion has been adopted to simulate ductile fracture. The crack initiation and propagation issimulated by deleting the mesh element. The result shows putting a backup material behind the edgeof the workpiece is an effective way to minimize the burr size. The effects of cutting condition,temperature and different backup material properties on the burr formation and burr size can beinvestigated using the developed finite element model. This model could be useful in the search foroptimal tool geometry and cutting condition for burr minimization and for the modeling of a burrformation mechanism
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/39/transtech_doi~10.4028%252Fwww.scientific.net%252FAMR.24-25.71.pdf
