Reference : Compression test for plastic anisotropy characterization using optical full-field dis-pl...
Scientific journals : Article
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/125180
Compression test for plastic anisotropy characterization using optical full-field dis-placement measurement technique
English
Tuninetti Vásquez, Victor mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Gilles, Gaëtan mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Département Argenco : Secteur MS2F >]
Milis, Olivier mailto [Université de Liège - ULg > Département Argenco : Secteur MS2F > Adéquat. struct. aux exig. de fonct.& perfor. techn.-écon. >]
Lecarme, Liza mailto [> >]
Habraken, Anne mailto [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
2012
Steel Research International
Verlag Stahleisen
Yes
International
1611-3683
Dusseldorf
Germany
[en] Ti-6Al-4V ; Plastic anisotropy ; Metal forming ; Parameter identification ; Validation ; Elasto-plastic modeling ; Tension-compression asymmetry
[en] In this work, a constitutive law, its identification and its validation for TA6V titanium alloy are presented. The material characteri-zation is achieved by quasi-static monotonic tensile and compression tests at several strain rates and in three orthogonal material orientations. Constitutive model as Johnson-Cook which describes the strain rate sensitivity of the plastic material response is used in order to identify the initial yield locus at a common strain rate (10-3 s-1). The macroscopic orthotropic yield criterion chosen is the well-known CPB06 proposed by Cazacu et al., which describes both the tension/compression asymmetry and the anisotropic behavior of hcp metals and alloys. Voce type isotropic hardening model is used for simplicity reasons. A compression test on ellipsoidal cross-section specimen is selected for validation purpose, where 3 Digital Image Correlation 3D systems are used in order to acquire the evolution of the full field displacement/strain during the test. Coulomb friction coefficient between the dies and the specimen is computed by means of inverse modelling. A good agreement on the prediction of the load as a function of axial displacement of the specimen is found.
Researchers ; Professionals ; Students ; General public ; Others
http://hdl.handle.net/2268/125180
also: http://hdl.handle.net/2268/127374 ; http://hdl.handle.net/2268/125272

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