DEVELOPMENT TRENDS IN THE FIELD OF DEFORMATION PATH STUDY UNDER THE CONDITIONS OF SHEET METAL FORMING

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F21%3A00353875" target="_blank" >RIV/68407700:21220/21:00353875 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

DEVELOPMENT TRENDS IN THE FIELD OF DEFORMATION PATH STUDY UNDER THE CONDITIONS OF SHEET METAL FORMING

Popis výsledku v původním jazyce

The production process of stamping is complex and, the load is disproportionate and the direction of the load changes during the partial operations, which directly affects the formability of the material. In automotive industry, the evaluation of formability is mainly carried out by analyzing the forming limit curves (FLC) of the used material. However, previous research has shown that the common practice of evaluating the formability of a thin sheet metal part using these FLCs is not always sufficient. The fundamental disadvantage of these curves lies in the inaccurate approximation of the material behaviour in regions with non-linear deformation paths. At the same time, the principle of determining the curves is to perform lengthy and costly formability tests according to Nakajima or Marciniak. In order to mitigate these shortcomings, a large number of research papers have been published during the last years with the aim of discovering a model that would allow a mathematical approximation of the FLC curves and at the same time a model that would be able to take into account the nonlinear deformation path. Thus, this research activity provides an insight into the subject and potential development directions in the field of the influence of the deformation path on formability under surface forming conditions.

Název v anglickém jazyce

DEVELOPMENT TRENDS IN THE FIELD OF DEFORMATION PATH STUDY UNDER THE CONDITIONS OF SHEET METAL FORMING

Popis výsledku anglicky

The production process of stamping is complex and, the load is disproportionate and the direction of the load changes during the partial operations, which directly affects the formability of the material. In automotive industry, the evaluation of formability is mainly carried out by analyzing the forming limit curves (FLC) of the used material. However, previous research has shown that the common practice of evaluating the formability of a thin sheet metal part using these FLCs is not always sufficient. The fundamental disadvantage of these curves lies in the inaccurate approximation of the material behaviour in regions with non-linear deformation paths. At the same time, the principle of determining the curves is to perform lengthy and costly formability tests according to Nakajima or Marciniak. In order to mitigate these shortcomings, a large number of research papers have been published during the last years with the aim of discovering a model that would allow a mathematical approximation of the FLC curves and at the same time a model that would be able to take into account the nonlinear deformation path. Thus, this research activity provides an insight into the subject and potential development directions in the field of the influence of the deformation path on formability under surface forming conditions.

Druh

O - Ostatní výsledky

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2021

Kód důvěrnosti údajů

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