Stress distribution in direct shear loading and its implication for engineering failure analysis

Z Li, J Liu, H Liu, H Zhao, R Xu… - International Journal of …, 2023 - World Scientific
Shear stress concentrations may promote damage and failure processes. Quantities of
studies have focused on the direct shear loading test, while the analytical model has not yet …

[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 …

Experimental correlation of mechanical properties of the ti-6al-4v alloy at different length scales

V Tuninetti, AF Jaramillo, G Riu, C Rojas-Ulloa… - Metals, 2021 - mdpi.com
This article focuses on a systematic study of a Ti-6Al-4V alloy in order to extensively
characterize the main mechanical properties at the macro-, micro-and submicrometric length …

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 …

Sensitivity analysis in the modelling of a high speed steel thin-wall produced by directed energy deposition

RT Jardin, V Tuninetti, JT Tchuindjang, N Hashemi… - Metals, 2020 - mdpi.com
This paper reports the sensitivity of the thermal and the displacement histories predicted by
a finite element analysis to material properties and boundary conditions of a directed-energy …

Optimizing laser power of directed energy deposition process for homogeneous AISI M4 steel microstructure

RT Jardin, V Tuninetti, JT Tchuindjang… - Optics & Laser …, 2023 - Elsevier
A finite element model of directed energy deposition (DED) process predicts the thermal
history during the manufacturing of high speed steel cuboid samples. The simulation result …

Assessing Feed-Forward Backpropagation Artificial Neural Networks for Strain-Rate-Sensitive Mechanical Modeling

V Tuninetti, D Forcael, M Valenzuela, A Martínez… - Materials, 2024 - mdpi.com
The manufacturing processes and design of metal and alloy products can be performed over
a wide range of strain rates and temperatures. To design and optimize these processes …

Influence of martensite and grain size on the mechanical behavior of austenitic Fe–C–Mn–Ni–Al medium Mn steels with TWIP mechanism under uniaxial tension …

A Oñate, M Castro, C Medina, JP Sanhueza… - Materials Chemistry and …, 2024 - Elsevier
Medium Mn steels with induced plasticity mechanisms have effectively addressed the high-
strength and ductility requirements for structural applications. However, there is still …

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 …