Digital Image Correlation (DIC) system as a verification tool for constitutive models of deformation with complex strain path changes
PBN-AR
Instytucja
Wydział Inżynierii Metali i Informatyki Przemysłowej (Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie)
Informacje podstawowe
Główny język publikacji
EN
Czasopismo
Computer Methods in Materials Science
ISSN
1641-8581
EISSN
Wydawca
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie Wydział Inżynierii Metali i Informatyki Przemysłowej
DOI
Rok publikacji
2016
Numer zeszytu
1
Strony od-do
47--53
Numer tomu
16
Link do pełnego tekstu
Identyfikator DOI
Liczba arkuszy
0.5
Słowa kluczowe
EN
work hardening models
strain path changes
Digital Image Correlation
Streszczenia
Język
EN
Treść
Effects of the strain path changes that occur during metal forming have been the subject of theoretical and experimental studies in the light of deformation inhomogeneities. Modern multiphase steels were used as their mechanical properties are very sensitive and strictly dependent on the combination of microstructure components with different levels of their mechanical responses. DIC as a precision tool has been used to investigate the deformation inhomogeneity during the tensile tests of specimens previously deformed with complex strain path history. The study was focused on the combined metal forming processes (i.e. Accumulated Angular Drawing (AAD), Wire Drawing (WD) and Wire Flattening (WF)). These processes are characterised by a combination of various deformation mechanisms (area reduction, torsion, bending, burnishing), and thus, are strongly affected by nonlinear strain path changes. Then, data provided in the experimental part of the work was used to assess the existing constitutive equations in the light of their applicability for the prediction of mechanical response of materials subjected to nonlinear loading conditions. In the numerical analysis, work hardening model (i.e. Chaboche model) was investigated. The results of computer simulation were then compared with the DIC measurements and conclusions regarding applicability of the proposed approach were drawn.
Cechy publikacji
original article
peer-reviewed
Inne
System-identifier
idp:101777