【正文】
f Metals,1983312.[12]S. Kumar,R. Singh,. Sekhon. An Expert System for Design of Blanking Dies for Sheet Metal Operations[DB/CD]. World Congress on Engineering and Computer Science,20081022[13]Storojev,V.M.,Teoriaobrabotkimetallovdavieniem,Moskva,1977[14]Iliescu,C.a(chǎn)ndI.Neagoe.“Upsettingofcutbarsinclosedtools”,WireWorldInte rnational,1987.[15]Goia,I.“Thetechnologyofbendingpipesandprofiles”,Ed,Tehnica,Bucharest, 1977.[16]Cristescu,N.“dynamicproblemsofthetheoryofplasticity”,Ed.Tehnica,Buchar est,1978[17]TeodorescuM.“thetechnologyofcoldlforming”,Ed.didacticaandpedagogica,Bucharest,1980.