000004114 001__ 4114
000004114 005__ 20141118153335.0
000004114 04107 $$acze
000004114 046__ $$k2004-05-10
000004114 100__ $$aPetruška, J.
000004114 24500 $$aComputational simulation of cold forming of bolts and prediction of material damage during the process

000004114 24630 $$n10.$$pEngineering Mechanics 2004
000004114 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Prague
000004114 506__ $$arestricted
000004114 520__ $$2eng$$aThe paper deals with application of selected criteria of ductile fracture to prediction of material damage during the production of bolts by cold forming. Two basic steps of this procedure are described. First, the fracture criteria parameters are identified by numerical simulation of realized material fracture tests in compression. Second, two main stages of the bolt production (forward extrusion of shaft and compression of head) are computationally simulated as a large displacement, elasto-plastic problem. The computed history of stress and strain is then used for evaluation of the fracture criteria and compared with the identified limit fracture values of the material. A number of geometrical versions are analysed to evaluate the influence of shape on the probability of fracture.

000004114 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004114 653__ $$a

000004114 7112_ $$aEngineering Mechanics 2004$$cSvratka (CZ)$$d2004-05-10 / 2004-05-13$$gEM2004
000004114 720__ $$aPetruška, J.$$iRusz, R.$$iJaníček, L.$$iSkalka, P.
000004114 8560_ $$ffischerc@itam.cas.cz
000004114 8564_ $$s3149633$$uhttps://invenio.itam.cas.cz/record/4114/files/T-Petruska-Jindrich.pdf$$y
             Original version of the author's contribution as presented on CD, .
            
000004114 962__ $$r4009
000004114 980__ $$aPAPER