Influence of the computational models for the spring-back prediction at stamping

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of the computational models for the spring-back prediction at stamping

Popis výsledku v původním jazyce

Nowadays are on the sheet stampings posing quite strict claims mainly in light of their strength, surface quality and dimensional accuracy. Stiffness and strength of produced part are essentially influenced by its shape and selection of the material. Design changes at the new types of the car-bodies quite markedly increase the requirements for shape and dimensional accuracy of sheet stampings and it also forces the processors of sheet to implement the newest methods which can fulfill these targets. Achieving the shape and dimensional accuracy of the formed part in bending is closely connected mainly with the material spring-back. However, at the drawing process is material on the drawing edge bended in the first phase and then it is straightened in the second phase. Thus here takes place Bauschinger effect during the material hardening. This paper is focused into the area of utilization mathematical modelling for spring-back prediction at sheet stampings. To evaluate the exercise of the Bauschinger effect influence at spring-back prediction by the mathematical modelling there were selected two anisotropic yield criterions termed as the Hill-48 and Vegter in combination with isotropic and kinematic hardening of formed material. Due to the high magnitude of spring-back, there was for this test chosen stainless material DIN 1.4301 because there was strong presumption to prove the influence of individual computational models on the test results.

Název v anglickém jazyce

Influence of the computational models for the spring-back prediction at stamping

Popis výsledku anglicky

Nowadays are on the sheet stampings posing quite strict claims mainly in light of their strength, surface quality and dimensional accuracy. Stiffness and strength of produced part are essentially influenced by its shape and selection of the material. Design changes at the new types of the car-bodies quite markedly increase the requirements for shape and dimensional accuracy of sheet stampings and it also forces the processors of sheet to implement the newest methods which can fulfill these targets. Achieving the shape and dimensional accuracy of the formed part in bending is closely connected mainly with the material spring-back. However, at the drawing process is material on the drawing edge bended in the first phase and then it is straightened in the second phase. Thus here takes place Bauschinger effect during the material hardening. This paper is focused into the area of utilization mathematical modelling for spring-back prediction at sheet stampings. To evaluate the exercise of the Bauschinger effect influence at spring-back prediction by the mathematical modelling there were selected two anisotropic yield criterions termed as the Hill-48 and Vegter in combination with isotropic and kinematic hardening of formed material. Due to the high magnitude of spring-back, there was for this test chosen stainless material DIN 1.4301 because there was strong presumption to prove the influence of individual computational models on the test results.

Druh

D - Stať ve sborníku

CEP obor

JD - Využití počítačů, robotika a její aplikace

OECD FORD obor

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Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

METAL 2016 - 25th Anniversary International Conference on Metallurgy and Materials, Conference Proceedings

ISBN

978-80-87294-67-3

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

488-493

Název nakladatele

TANGER Ltd.

Místo vydání

Ostrava

Místo konání akce

Brno

Datum konání akce

1. 1. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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