[HTML][HTML] Characterization approaches affect asymmetric load predictions of hexagonal close-packed alloy

V Tuninetti, A Oñate, M Valenzuela… - Journal of Materials …, 2023 - Elsevier
The anisotropic plasticity constants of the CPB06 criterion for Ti64, previously identified with
experiments performed in all three dimensions, are applied here to evaluate the effect of the …

Accurate numerical prediction of ductile fracture and micromechanical damage evolution for Ti6Al4V alloy

C Rojas-Ulloa, V Tuninetti, H Sepúlveda… - Computational …, 2024 - Springer
Abstract A CPB06-based Stewart-Cazacu micromechanical damage model is implemented
and validated for Ti6Al4V material. It provides accurate numerical predictions in terms of …

Nanomechanical characterization of the deformation response of orthotropic Ti–6Al–4V

C Rojas-Ulloa, C Bouffioux, AF Jaramillo… - Advanced …, 2021 - Wiley Online Library
The nanoindentation‐induced mechanical deformation response is applied to identify the
orthotropic elastic moduli using the Delafargue and Ulm method as well as to validate the …

A Combined Experimental and Numerical Calibration Approach for Modeling the Performance of Aerospace-Grade Titanium Alloy Products

V Tuninetti, H Sepúlveda, C Beecher, C Rojas-Ulloa… - Aerospace, 2024 - mdpi.com
Finite element modeling for designing and optimizing lightweight titanium aerospace
components requires advanced simulation tools with adequate material modeling. In this …

Evaluation of the orthotropic behavior in an auxetic structure based on a novel design parameter of a square cell with re-entrant struts

R Valle, G Pincheira, V Tuninetti, C Garrido, C Treviño… - Polymers, 2022 - mdpi.com
In this research, a three-dimensional auxetic configuration based on a known re-entrant cell
is proposed. The 3D auxetic cell is configured from a new design parameter that produces …

Identification and validation of an extended Stewart-Cazacu micromechanics damage model applied to Ti–6Al–4V specimens exhibiting positive stress triaxialities

C Rojas-Ulloa, M Valenzuela… - Proceedings of the …, 2021 - journals.sagepub.com
In this research, the Stewart-Cazacu micromechanics coupled damage model is extended
and validated adding nucleation and coalescence models as new damage mechanisms …

Direct and Inverse Characterization of the Asymmetric Hardening Behavior of Bulk Ti64 Alloy

V Tuninetti, G Gilles, H Sepúlveda, G Pincheira… - Physical Sciences …, 2022 - mdpi.com
This work focuses on the evaluation of the calibration strategy of the CPB06 asymmetry
parameter k and its influence on the predictive behavior of the model at large deformations …

Isotropic and Kinematic Hardening Laws: Plastic Behavior of Mild Steel Under Shear Tests

O Daghfas, A Znaidi, R Nasri - … and Mechanics II: Selected Papers from the …, 2022 - Springer
The principal objective of this work is to model the behavior of a mild steel material from the
experimental data using simple and cyclic shear tests on samples taken from different …

Effect of microstructure on the formability of β titanium alloys

C Hu - 2021 - theses.hal.science
Titanium alloys are widely used in industries (aeronautics, biomedical...) due tu their high
specific mechanical strength, very good corrosion resistance and high temperature …