Bibliographic Details
| Title: |
DETERMINATION OF FLOW STRESS BY THE HYDRAULIC BULGE TEST. |
| Alternate Title: |
Određivanje naprezanja tečenja hidrauličnim pokusom dubokog izvlačenja. |
| Authors: |
Slota, J.1, Spišák, E.1 |
| Source: |
Metalurgija. 2008, Vol. 47 Issue 1, p13-17. 5p. 2 Black and White Photographs, 1 Diagram, 1 Chart, 5 Graphs. |
| Subjects: |
Hydraulics, Sheet metal working machinery, Strains & stresses (Mechanics), Finite element method, Bulging (Metalwork), Thickness measurement |
| Abstract (English): |
In sheet metal forming operations the mechanical properties of the sheet metal (stress-strain curve, flow stress) greatly influence metal flow and product quality. Accurate determination of the stress-strain relationship is important in process simulation by finite element method. In this paper the sheet thickness gradation in different points of the hemisphere formed in the bulge test is analysed, both theoretically and experimentally. A precise determination of sheet thickness at the pole is very important in the precise determination of stress-strain relationship. The use of the hydraulic bulge test for estimation of flow stress under biaxial stress-strain state is discussed. [ABSTRACT FROM AUTHOR] |
| Abstract (Croatian): |
Određivanje naprezanja tečcenja hidrauličnim pokusom dubokog izvlačenja. U oblikovanju trake mehanič ka svojstva trake (σ-ϵ dijagram, naprezanje tečenjem) značajno utječu na tečenje i kakvću proizvoda. Točno određivanje odnosa naprezanje-istezanje je važno u procesu simulacije metodom konačnih elemenata. Na pokusu dobijenim dubokim izvlačenjem analiziralo se i teoretski i eksperimentalno, po debljini trake i polukugli. Precizno određivanje po debljini trake je važno za odnos naprezanje-istezanje. Raspravljeno je rabljenje hidrauličkog pokusa dubokog izvlačenja za procjenu naprezanja tečenja za dvoosno stanje naprezanje- istezanje. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
