Visco-plasticity of polycrystalline tantalum - rational phenomenology in constitutive modeling

• Autorzy: Klepaczko J. R.
• Języki publikacji: EN

Abstrakty

EN

Constitutive modeling based on the so-called rational phenomenology (materials science approach) has been applied to take into account strain hardening, strain-rate sensitivity, thermal effects and evolution of microstructure in a polycrystalline tantalum. A wide range of strain rate in shear ... and homologous temperature (0.05 < ... < 0.2) is considered. Behavior of tantalum is understood as an example for BCC polycrystalline metals. The constitutive modeling provided a possibility to determine all material constants via the experimental results obtained on thin tubular specimens using a fast hydraulic machine and a torsion Hopkinson bar. Finally, the model predictions are demonstrated by numerical simulations for different history paths in strain rate and temperature.

Słowa kluczowe

EN

viscoplasticity; polycrystalline tantalum; experimental analysis; numerical analysis

PL

lepkoplastyczność; polikrystaliczny tantal; analiza eksperymentalna; analiza numeryczna

• Wydawca: Instytut Podstawowych Problemów Techniki PAN
• Czasopismo: Archives of Mechanics
• Rocznik: 2002
• Tom: Vol. 54, nr 5-6
• Strony: 459--478
• Opis fizyczny: Bibliogr. 30 poz.

Twórcy

autor

Klepaczko J. R.

• Metz University, Laboratory of Physics and Mechanics of Materials, Ile du Saulcy, 57045 Metz, France,