Results 21 to 30 of about 11,724 (273)

Accuracy of Modified Johnson–Cook Modelling of the Blanking Process through Experimental and Numerical Analysis

open access: yesMathematics
Metal parts undergo a blanking test that involves experimentation with different process parameters across multiple levels. The presence of uncontrolled burrs (measured as Hbv) significantly affects the precise geometry of the blanked parts, making it a ...
Lotfi Ben Said   +3 more
doaj   +2 more sources

Comparative Analysis of Three Constitutive Models and Microstructure Characteristics of Nb521 during Hot Deformation

open access: yesCrystals, 2023
This study presents an exploration of the flow stress constitutive model and the deformation mechanism of Nb521, both critical for its practical application.
Baohui Zhu   +3 more
doaj   +1 more source

Parameter Sensitivity Study of the Johnson-Cook Model in FEM Turning of Ti6Al4V Alloy. [PDF]

open access: yesMaterials (Basel)
The aim of this study was to analyse in detail the effect of varying the parameters of the Johnson–Cook (JC) material model on the results of a numerical simulation of the orthogonal turning process of the Ti6Al4V titanium alloy.
Löschner P, Niesłony P, Kołodziej S.
europepmc   +2 more sources

A Comparative Study on Johnson–Cook, Modified Johnson–Cook, Modified Zerilli–Armstrong and Arrhenius-Type Constitutive Models to Predict Hot Deformation Behavior of TA2 [PDF]

open access: yesHigh Temperature Materials and Processes, 2019
Abstract The true strain data and true stress data are obtained from the isothermal compression tests under a wide range of strain rates (0.1–20 s −1 ) and temperatures (933–1,133 K) over the Gleeble-3500 thermomechanical simulator.
Zhang Bing   +7 more
openaire   +2 more sources

Constitutive modelling of the 6061 aluminium alloy under hot rolling conditions and large strain ranges

open access: yesMaterials & Design, 2020
Constitutive models were built based on the results of isothermal hot compression tests for a 6061 aluminium alloy at temperatures of 400, 450, 500, and 550 °C and strain rates of 0.1, 1, and 10 s−1, which reproduced conditions of the hot rolling forming
André Rudnytskyj   +3 more
doaj   +1 more source

Plastic temperature-dependent constitutive modeling of pure aluminum diaphragms at large strains by using bulge test

open access: yesJournal of Materials Research and Technology, 2021
A plastic temperature-dependent constitutive model is developed for 0.05 mm thickness pure aluminum diaphragms at large strains by using bulge test method. Rupture strain of the material is recorded below two percent according to tensile tests.
M.M. Ashrafian, S.A. Hosseini Kordkheili
doaj   +1 more source

Impact Dynamic Response of Spherical Net Shells: Finite Element-Based Computational Analysis Investigating the Influence of Dynamic Constitutive Models

open access: yesBuildings, 2023
The net shell is a widely utilized large-span space structure known for its aesthetically pleasing design and uniform load distribution, as well as serving as a prominent architectural landmark. In recent years, the impact resistance research of mesh and
Yuhang Shen   +3 more
doaj   +1 more source

The effect of strain history on dynamic necking in titanium alloys, experimental and numerical analysis [PDF]

open access: yesEPJ Web of Conferences, 2021
The determination of the dynamic response of titanium alloys is vital for aerospace industrial applications. The present research investigates the effect of strain history and temperature on the dynamic strain localization in Ti-6Al-4V grade-5 alloy. The
Gour Govind   +3 more
doaj   +1 more source

Analysis of the High Temperature Plastic Deformation Characteristics of 18CrNi4A Steel and Establishment of a Modified Johnson–Cook Constitutive Model

open access: yes, 2023
To investigate the plastic deformation behavior of 18CrNi4A steel at high temperatures, an isothermal hot compression test was conducted on a Thermecmastor-Z series test machine at deformation temperatures from 1273 K to 1423 K and strain rates
Bingyang Wei   +3 more
core   +1 more source

Hot Deformation Behavior and Microstructure Evolution of 2219/TiB2 Al-matrix Composite [PDF]

open access: yesMaterials Research, 2020
Hot compression tests for 2219/TiB2 Al-matrix composite were conducted on a Gleeble-3500 isothermal simulator in the temperature range of 300~500°C and strain rates of 0.01, 0.1, 1, 10s-1 to obtain true stress strain curves.
Wang Jing, Liang Qiang, Li Ping
doaj   +2 more sources

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