A multi-mechanism model for cutting simulations based on the concept of generalized stresses
Tipus de documentComunicació de congrés
Condicions d'accésAccés obert
Based on the concept to of generalized stresses as proposed by Gurtin  and Forest , we extend an existing model for strain rate- and temperature-dependent asymmetric plastic material behavior accompanied by phase transformation with a gradient term of phase fraction. To this end a chemical variable, representing the austenite volume fraction, is treated as an extra degree of freedom, and the influence of its first gradient will be studied. A generalized principle of virtual power is postulated involving generalized stresses and used to derive the constitutive equations. The bulk model is formulated within a thermodynamic framework. For the scenario of a cutting process we have a martensite-austenite-martensite transformation. Finally, a cutting simulation is investigated to test our model and the different mechanisms are illustrated.
CitacióCheng, C. [et al.]. A multi-mechanism model for cutting simulations based on the concept of generalized stresses. A: COMPLAS XIII. "COMPLAS XIII : proceedings of the XIII International Conference on Computational Plasticity : fundamentals and applications". CIMNE ed. Barcelona: CIMNE, 2015, p. 809-817.