Viscoplastic behaviour of porous metallic materials saturated with liquid part II: Experimental identification on a SnPb model alloy

Autor:	Denis Favier, M. Suéry, Christophe L. Martin
Rok vydání:	1997
Předmět:	Materials science Viscoplasticity Mechanical Engineering Rheometer Constitutive equation Compression (physics) law.invention Stress (mechanics) Rheology Mechanics of Materials law Phase (matter) General Materials Science Geotechnical engineering Hydrostatic equilibrium Composite material
Zdroj:	International Journal of Plasticity. 13:237-259
ISSN:	0749-6419
DOI:	10.1016/s0749-6419(97)00010-7
Popis:	The rheological behaviour of a model SnPb alloy in the semi-solid state is investigated. The tensorial constitutive equation that was proposed in Part I for viscoplastic porous metallic materials saturated with liquid is used. In particular, the three characteristic functions appearing in the viscoplastic potential that describes the porous solid phase rheology are experimentally identified. Three stress states are exploited to identify the functions: undrained triaxial compression, drained hydrostatic densification and shear deformation in a Couette rheometer. Undrained tests for which the interstitial liquid pressure is measured show that a viscoplastic potential with a densification/dilatation boundary situated on the J1 = 0 axis (firstin variant) is not valid. Finally, triaxial drained compression is used to partially validate the coupling, introduced in the viscoplastic potential formulation, between hydrostatic and deviatoric properties.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8bcc9872a961b2fc0ea1e5a0d27e7597 https://doi.org/10.1016/s0749-6419(97)00010-7 Zobrazit plný text záznamu Full Text from ScienceDirect