An Evolutionary Yield Function Model Based on Plastic Work and Non-Associated Flow Rule

• Published in: Metals (Basel ) Vol. 9; no. 5; p. 611
• Main Authors: Park, Taejoon, Abu-Farha, Fadi, Pourboghrat, Farhang
• Format: Journal Article
• Language: English
• Published: Basel MDPI AG 25.05.2019
• Subjects: anisotropic hardening; Anisotropy; Axial stress; Case hardenability; cylindrical cup drawing; Deformation effects; earing; earing profile; Evolution; evolutionary yield function; Kinematics; Mechanical properties; Metal sheets; multi-phase Q& Niobium; niobium sheet; non-associated flow rule; P 980 steel; Plastic deformation; Room temperature; Simulation; Steel; Stress functions; Tension tests; Yield strength; Yield stress

A constitutive law was developed based on the evolutionary yield function to account for the evolution of anisotropy induced by the plastic deformation. For the effective description of anisotropy, the yield stress function and plastic potential were separately defined based on the non-associated fl...