Advanced material model for numerical simulations of fine blanking

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F19%3AN0000118" target="_blank" >RIV/26316919:_____/19:N0000118 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Advanced material model for numerical simulations of fine blanking

Popis výsledku v původním jazyce

Advanced manufacturing processes, including fine blanking, are widely used in the mass production of sheet metal parts. In the present article, numerical modelling and a real-world test of fine blanking are discussed with a focus on material characterization. The material was 1.4301 stainless steel and its model was constructed using measured mechanical properties. Tensile tests, plane strain tests and shear tests were carried out to determine steel characteristics under various stress states. All the tests were performed at room temperature and under quasi-static conditions. Local strains were determined using the ARAMIS digital image correlation (DIC) system from GOM company. After testing, metallographic analysis of the specimens was conducted for characterizing their fracture surfaces. By correlating the data from the DIC system, results of numerical modelling and metallographic examination, the instant of failure initiation in a specimen can be determined. When a ductile failure model is calibrated against tests under various stress states and used for modelling of blanking, it improves the description and the accuracy of the computational model of the process. The choice of the failure model has a substantial impact on the calculated magnitude of fine blanking force. To validate the material models chosen, an additional fine blanking test and metallographic examination were performed in order to assess the creation and shape of the sheared edge. A material model developed and validated by this procedure becomes useful in the design and optimization of real-world blanking processes.

Název v anglickém jazyce

Advanced material model for numerical simulations of fine blanking

Popis výsledku anglicky

Advanced manufacturing processes, including fine blanking, are widely used in the mass production of sheet metal parts. In the present article, numerical modelling and a real-world test of fine blanking are discussed with a focus on material characterization. The material was 1.4301 stainless steel and its model was constructed using measured mechanical properties. Tensile tests, plane strain tests and shear tests were carried out to determine steel characteristics under various stress states. All the tests were performed at room temperature and under quasi-static conditions. Local strains were determined using the ARAMIS digital image correlation (DIC) system from GOM company. After testing, metallographic analysis of the specimens was conducted for characterizing their fracture surfaces. By correlating the data from the DIC system, results of numerical modelling and metallographic examination, the instant of failure initiation in a specimen can be determined. When a ductile failure model is calibrated against tests under various stress states and used for modelling of blanking, it improves the description and the accuracy of the computational model of the process. The choice of the failure model has a substantial impact on the calculated magnitude of fine blanking force. To validate the material models chosen, an additional fine blanking test and metallographic examination were performed in order to assess the creation and shape of the sheared edge. A material model developed and validated by this procedure becomes useful in the design and optimization of real-world blanking processes.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/LO1412" target="_blank" >LO1412: Rozvoj Západočeského materiálově metalurgického Centra</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

57th International Scientific Conference on Experimental Stress Analysis (EAN 2019)

ISBN

978-802145766-9

ISSN

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e-ISSN

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Počet stran výsledku

9

Strana od-do

151-159

Název nakladatele

Czech Society for Mechanics

Místo vydání

Praha

Místo konání akce

Luhačovice

Datum konání akce

3. 6. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000568113800025