000015985 001__ 15985
000015985 005__ 20161115135335.0
000015985 04107 $$aeng
000015985 046__ $$k2013-06-12
000015985 100__ $$aPetruska, J.
000015985 24500 $$aComputational Simulation of Cross Roll Straightening

000015985 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015985 260__ $$bNational Technical University of Athens, 2013
000015985 506__ $$arestricted
000015985 520__ $$2eng$$aThe paper deals with numerical analysis of the process of cross roll straightening of circular bars in a seven-roll straightening machine. In this machine, initially curved bar rotates along its axis as it progresses through laterally staggered rolls, being loaded by a fluctuating bending moment beyond its elastic limit. To simulate the process efficiently, special program was developed, based on a beam-type finite element, Euler scheme of material flow along the straightened bar and nonlinear iterative solution of the elasto plastic material behavior. Based on the input data, process characteristics like roller loading, product deflection, curvature and plasticization can be quickly obtained. With reliable solution of the direct problem, optimal intermeshing of rollers for given input data can be found in an iterative process. The paper describes main features of the algorithm and examples of its application.

000015985 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015985 653__ $$aCross roll straightening, FEM, plastic bending.

000015985 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015985 720__ $$aPetruska, J.$$iNavrat, T.
000015985 8560_ $$ffischerc@itam.cas.cz
000015985 8564_ $$s460912$$uhttps://invenio.itam.cas.cz/record/15985/files/2064.pdf$$yOriginal version of the author's contribution as presented on CD, section: SC-RS 07 FEM: MODELLING AND SIMULATION
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000015985 962__ $$r15525
000015985 980__ $$aPAPER