Development of a Hyperelastic Constitutive Model Based on the CrystalPlasticity Theory for the Simulation of Machining Operations
Language
en
Communication dans un congrès avec actes
This item was published in
17th CIRP Conference on Modelling of Machining Operations, 2019-06-13, Sheffield. 2019, vol. 82, p. 20-25
Elsevier BV
English Abstract
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. ...Read more >
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.Read less <
English Keywords
Numerical simulation
Crystal plasticity model
Hyperelastic formulation
Adiabatic shear bands
Origin
Hal imported