Dynamic study of the compression strength of cuboid steel specimens cut of Hardox 450 sheet

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU152606" target="_blank" >RIV/00216305:26210/24:PU152606 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Dynamic study of the compression strength of cuboid steel specimens cut of Hardox 450 sheet

Popis výsledku v původním jazyce

An experimental analysis was performed to determine the high-speed compressive strength of cuboid steel specimens including material anisotropy using a split Hopkinson bar technique. The specimens were fabricated from a high-strength steel Hardox 450 metal sheet with a thickness of 5 mm. To study material anisotropy, specimens were taken along 0°, 45°, and 90° relative to the rolling direction. A low positive strain rate sensitivity was observed from the onset of yielding over all tested strain rates in all directions. This fact is very important for manufacturing process because higher strain rates are more common in manufacturing processes, since quasi-static strain rates are use very rarely encountered in metal sheet forming, e.g. hydroforming or superplastic forming. If the design of the tool and the selection of a suitable machine (press, die hammer) were made using the values obtained during quasistatic tests, fatal damage to both the tool and the machine could occur. During testing at a quasi-

Název v anglickém jazyce

Dynamic study of the compression strength of cuboid steel specimens cut of Hardox 450 sheet

Popis výsledku anglicky

An experimental analysis was performed to determine the high-speed compressive strength of cuboid steel specimens including material anisotropy using a split Hopkinson bar technique. The specimens were fabricated from a high-strength steel Hardox 450 metal sheet with a thickness of 5 mm. To study material anisotropy, specimens were taken along 0°, 45°, and 90° relative to the rolling direction. A low positive strain rate sensitivity was observed from the onset of yielding over all tested strain rates in all directions. This fact is very important for manufacturing process because higher strain rates are more common in manufacturing processes, since quasi-static strain rates are use very rarely encountered in metal sheet forming, e.g. hydroforming or superplastic forming. If the design of the tool and the selection of a suitable machine (press, die hammer) were made using the values obtained during quasistatic tests, fatal damage to both the tool and the machine could occur. During testing at a quasi-

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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