Numerical simulation of the mechanical behavior of ultrafine- and coarse-grained Zr–Nb alloys over a wide range of strain rates

2017 ◽  
Author(s):  
V. A. Serbenta ◽  
N. V. Skripnyak ◽  
V. A. Skripnyak ◽  
E. G. Skripnyak
Keyword(s):  
Numerical Simulation ◽  
Mechanical Behavior ◽  
Coarse Grained ◽  
Strain Rates ◽  
Wide Range

scholarly journals Compaction of Cohesive Granular Material: Application to Carbon Paste

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 704
Author(s):  
Zahraa Kansoun ◽  
Hicham Chaouki ◽  
Donald Picard ◽  
Julien Lauzon-Gauthier ◽  
Houshang Alamdari ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Mechanical Behavior ◽  
Aluminum Industry ◽  
Frequency Effect ◽  
Strain Rates ◽  
Cyclic Tests ◽  
Carbon Paste ◽  
Rheological Models ◽  
Softening Behavior ◽  
The Aluminum Industry

Carbon-like materials such as the anode and the ramming paste play a crucial role in the efficiency of the Hall–Héroult process. The mechanical behavior of these materials during forming processes is complex and still ill-understood. This work aimed to investigate experimentally the mechanical behavior of a carbon paste used in the aluminum industry under different loading conditions. For this purpose, experiments consisting of (1) relaxation tests at different compaction levels, (2) quasi-static cyclic tests at several amplitudes, (3) monotonic compaction tests at varied strain rates, and (4) vibrocompaction tests at different frequencies were carried out. The obtained results highlight some fundamental aspects of the carbon paste behavior such as the strain rate’s effect on the paste compressibility, the hardening-softening behavior under cyclic loadings, the effect of cycling amplitude on the stress state and the paste densification, and the frequency effect on the vibrocompaction process. These results pave the way for the development of reliable rheological models for the modeling and the numerical simulation of carbon pastes forming processes.

Mechanical behavior of DP780 dual phase steel at a wide range of strain rates

2018 ◽  
Vol 5 (9) ◽  
pp. 096519 ◽  
Author(s):  
Shengci Li ◽  
Lan Zhang ◽  
Hongjin Zhao ◽  
Liang Qi ◽  
Yonglin Kang
Keyword(s):  
Mechanical Behavior ◽  
Dual Phase Steel ◽  
Dual Phase ◽  
Strain Rates ◽  
Wide Range

scholarly journals Dynamic Mechanical Characteristics and Constitutive Modeling of Rail Steel over a Wide Range of Temperatures and Strain Rates

2019 ◽  
Vol 2019 ◽  
pp. 1-15
Author(s):  
Peijie Liu ◽  
Yanming Quan ◽  
Guo Ding
Keyword(s):  
Strain Rate ◽  
Mechanical Behavior ◽  
Split Hopkinson Pressure Bar ◽  
Rail Steel ◽  
Strain Rates ◽  
Dynamic Mechanical ◽  
Flow Response ◽  
Strain And Strain Rate ◽  
Average Absolute Relative Error ◽  
Wide Range

Rail steel plays an indispensable role in the safety and stability of the railway system. Therefore, a suitable constitutive model is quite significant to understand the mechanical behavior of this material. Here, the compressive mechanical behavior of heat-treated U71Mn rail steel over a wide range of strain rates (0.001 s−1–10000 s−1) and temperatures (20°C–800°C) was systematically investigated via uniaxial quasistatic and dynamic tests. The split Hopkinson pressure bar (SHPB) apparatus was utilized to perform dynamic mechanical tests. The effects of temperature, strain, and strain rate on the dynamic compressive characteristics of U71Mn were discussed, respectively. The results indicate that the flow response of U71Mn is both temperature-sensitive and strain rate-sensitive. However, the influence of temperature on the flow response is more remarkable than that of strain rate. On the basis of the experimental data, the original and modified Johnson-Cook (JC) models of the studied material were established, respectively. Using correlation coefficient and average absolute relative error parameters, it is revealed that better agreement between the experimental and predicted stress is reached by the modified JC model, which demonstrates that the modified one can characterize the mechanical behavior of the studied material preferably.

scholarly journals Influence of grain size distribution on the mechanical behavior of light alloys in wide range of strain rates

2017 ◽  
Author(s):  
Vladimir A. Skripnyak ◽  
Natalia V. Skripnyak ◽  
Evgeniya G. Skripnyak ◽  
Vladimir V. Skripnyak
Keyword(s):  
Grain Size ◽  
Mechanical Behavior ◽  
Size Distribution ◽  
Grain Size Distribution ◽  
Strain Rates ◽  
Light Alloys ◽  
Wide Range

Mechanical behavior of microstructure engineered multi-length-scale titanium over a wide range of strain rates

2013 ◽  
Vol 61 (10) ◽  
pp. 3781-3798 ◽  
Author(s):  
W.H. Yin ◽  
F. Xu ◽  
O. Ertorer ◽  
Z. Pan ◽  
X.Y. Zhang ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Length Scale ◽  
Strain Rates ◽  
Wide Range

Mechanical Behavior of AZ31B Magnesium Alloy Sheet at Different Strain Rates and Stress States

2016 ◽  
Vol 867 ◽  
pp. 3-7
Author(s):  
Chun Sheng Ma ◽  
Hai Long Fu ◽  
Hao Li ◽  
Xiao Luo ◽  
Yang Li ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Response Characteristic ◽  
Alloy Sheet ◽  
Test Method ◽  
Mg Alloys ◽  
Mg Alloy ◽  
Strain Rates ◽  
Compression Properties ◽  
Wide Range ◽  
Stress States

This Magnesium (Mg) alloys have been increasingly used in the automotive industry due to their superior mechanical properties compared with other metals. While there are some obstacles in the application of Mg alloy, one of that is its complex dynamic response characteristic. Many papers have studied the tensile and compression properties of AZ31B Mg alloys sheet, but lack of shear test. This paper presents experimental study, including the test method and test data analysis, on the AZ31B Mg alloy sheet. Uniaxial tension tests were carried out over a wide range of strain rates from to , which are of interest in vehicle crash CAE. At the same time uniaxial compression and shear tests at strain rates from to were also carried out. The different mechanical behavior of AZ31B Mg alloys sheet between tensile, compression and shear stress states can also be studied in this paper.

Application of TEM to Deformation, Wear, and Fracture of Ceramics

1974 ◽  
Vol 32 ◽  
pp. 472-473
Author(s):  
B. J. Hockey
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Mechanical Behavior ◽  
Brittle Materials ◽  
High Temperature Strength ◽  
Wide Range ◽  
Corrosive Environments ◽  
Further Development

Ceramics, such as Al2O3 and SiC have numerous current and potential uses in applications where high temperature strength, hardness, and wear resistance are required often in corrosive environments. These materials are, however, highly anisotropic and brittle, so that their mechanical behavior is often unpredictable. The further development of these materials will require a better understanding of the basic mechanisms controlling deformation, wear, and fracture.The purpose of this talk is to describe applications of TEM to the study of the deformation, wear, and fracture of Al2O3. Similar studies are currently being conducted on SiC and the techniques involved should be applicable to a wide range of hard, brittle materials.

Sign in / Sign up

Export Citation Format

Share Document