Relation between strain hardening of steel and critical impact velocity in tension

• Autorzy: Rodriguez-Martinez J. A. , Rusinek A. , Arias A.

Warianty tytułu

PL

Zależność między umocnieniem odkształceniowym stali a krytyczną prędkością uderzenia przy rozciąganiu

• Języki publikacji: EN

Abstrakty

EN

In the present paper, a numerical study on the influence of strain hardening on the Critical Impact Velocity (CIV) in tension is conducted. Finite element code ABAQUS/Explicit is used to carry out numerical simulations of dynamic tension tests in a wide range of impact velocities up to that corresponding to the CIV. The constitutive relation due to Rusinek and Klepaczko (2001) has been used to define the material behaviour. Strain hardening parameters of the RK model were varied during the simulations. Numerical results are compared with those obtained from the analytical description of CIV proposed by Klepaczko (2005). Satisfactory agreement is found between numerical and analytical approaches. The analysis allows for a better understanding of the causes responsible of the CIV appearance.

PL

Praca przedstawia numeryczną analizę wpływu umocnienia odkształceniowego na krytyczną prędkość uderzenia (CIV) przy rozciąganiu. W symulacjach zastosowano oprogramowanie ABAQUS/Explicit oparte na metodzie elementów skończonych. Obliczeń dokonano dla dynamicznych obciążeń rozciągających w szerokim zakresie prędkości uderzenia aż do osiągnięcia wartości krytycznej (CIV). Do opisu materiału próbki użyto równań konstytutywnych modeli Rusinka-Klepaczki. Podczas analizy zmieniano parametry umocnienia odkształceniowego opisanego tym modelem. Wyniki symulacji numerycznych porównano z analitycznym opisem CIV zaproponowanym przez Klepaczkę (2005). Uzyskano zadawalającą zgodność pomiędzy symulacją a teorią. Przedstawiona analiza przyczynia się do lepszego zrozumienia zjawisk odpowiedzialnych za powstawanie krytycznej prędkości uderzenia (CIV).

Słowa kluczowe

EN

critical impact velocity; RK model; dynamic tension

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2009
• Tom: Vol. 47 nr 3
• Strony: 645--665
• Opis fizyczny: Bibliogr. 30 poz., rys., tab.

Twórcy

autor

Rodriguez-Martinez J. A.

autor

Rusinek A.

autor

Arias A.

• University Carlos III of Madrid, Department of Continuum Mechanics and Structural Analysis, Madrid, Spain,

Bibliografia

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