Development of a Hyperelastic Constitutive Model Based on the CrystalPlasticity Theory for the Simulation of Machining Operations
Langue
en
Communication dans un congrès avec actes
Ce document a été publié dans
17th CIRP Conference on Modelling of Machining Operations, 2019-06-13, Sheffield. 2019, vol. 82, p. 20-25
Elsevier BV
Résumé en anglais
In this work, a hyperelastic constitutive model is developed to describe the thermo-mechanical behavior of the Ti17 titanium alloy. The grain shape and the crystallographic orientation are explicitly taken into account. ...Lire la suite >
In this work, a hyperelastic constitutive model is developed to describe the thermo-mechanical behavior of the Ti17 titanium alloy. The grain shape and the crystallographic orientation are explicitly taken into account. The behavior of both theαandβphases is modelled with a crystal plasticity formulation coupled to a CDM (Continuum Damage Model). The constitutive model is implemented in the ABAQUS/Explicit finite element solver with a user-defined subroutine. The model parameters are identified from experimental tests. According to the cutting simulation results, both strain localization and chip segmentation are strongly impacted by the crystallographic orientation.< Réduire
Mots clés en anglais
Numerical simulation
Crystal plasticity model
Hyperelastic formulation
Adiabatic shear bands
Origine
Importé de halUnités de recherche