Experimental study with a Digital Image Correlation (DlC) method and numerical simulation of an anisotropic elastic-plastic commercially pure titanium

• Autorzy: Toussaint F. , Tabourot L. , Vacher P.

Warianty tytułu

PL

Doświadczalne badania w zakresie sprężysto-plastycznym handlowo czystego tytanu za pomocą metody korelacji obrazu cyfrowego oraz symulacji numerycznej

• Języki publikacji: EN

Abstrakty

EN

In this paper, the tensile behaviour of a commercially pure titanium is studied using a full-field strain measurement. A fine analysis of the measured strain fields is carried out in order to determine the intrinsic behaviour of the material. An elastic-plastic model taking material anisotropy into account is proposed. On the basis of experimental results, the parameters of this model are identified then introduced into a FEM code in order to simulate the behaviour of titanium. To assess the performance of the approach, the numerical results are finally analysed and compared with measurements coming from image processing. A quite satisfactory agreement between simulation and experiment is obtained.

PL

Podczas prób rozciągania blachy z handlowo czystego tytanu badano rozkład odkształceń za pomocą analizy obrazu i identyfikacji położenia przez korelację kontrastu. Metoda pozwoliła na wyznaczenie odkształceń podczas rozciągania na całej powierzchni próbki, łącznie ze strefą przewężenia, dla trzech kierunków rozciągania. Na podstawie pomiarów wyznaczono krzywe umocnienia, współczynniki anizotropii oraz przedstawiono równania konstytutywne badanego materiału, obejmujące izotropowy zakres sprężysty oraz anizotropowy zakres plastyczny. Do opisu właściwości anizotropowych zastosowano warunek Hilla z 1948 r. Poprawność modelu oceniono na podstawie modelowania MES próby rozciągania.

Słowa kluczowe

EN

mechanical testing; full-field measurement; anisotropic material; finite elements; titanium

PL

rozciąganie blach; właściwości anizotropowe

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2008
• Tom: Vol. 8, no 3
• Strony: 131--143
• Opis fizyczny: Bibliogr. 20 poz., rys., tab., wykr.

Twórcy

autor

Toussaint F.

autor

Tabourot L.

autor

Vacher P.

• Laboratoire SYMME, Polytech Savoie, BP 80439, 74944 Annecy Ie Vieux Cedex, France

Bibliografia

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