MODIFIED HYDRAULIC BULGING IN ACQUISITION OF STRESS - STRAIN CURVE (CROSBI ID 570130)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Škunca, Marko ; Math, Miljenko ; Grizelj, Branko
engleski
MODIFIED HYDRAULIC BULGING IN ACQUISITION OF STRESS - STRAIN CURVE
From classical hydraulic bulging of a circular diaphragm, a new method of recording a stress-strain curve is derived named modified hydraulic bulging on the sphere. New method allows more accurate determination of membrane stress in the deforming material. Assumption on the bulk geometry is no longer needed since modification, using sphere as an obstacle, determines the radius of curvature needed in acquisition of membrane stress. Performing modified hydraulic bulging upon just one test specimen, yields thee points of stress-strain curve. Experimentally obtained points have different strains, covering different areas ; small, medium and large deformations, within a single experiment. Use of the small transducer integrated in apparatus, enables acquisition of force and thus reliable stress acquisition upon the known (spherical) geometry. Likewise obtained stress-strain curve was used in creation of FE model of the modified hydraulic bulging on the sphere.
modified hydraulic bulging; stress-strain curve; hydroforming
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Podaci o prilogu
2010.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of ESAFORM 2010
Ceretti, Elisabetta ; Giardini, Claudio
Brescia: European Space Agency (ESA)
Podaci o skupu
13th ESAFORM Conference on Material Forming
ostalo
07.04.2010-09.04.2010
Brescia, Italija