Understanding the relation between spatial heterogeneity and structural rejuvenation is one of the hottest topics in the field of metallic glasses (MGs). In this work, molecular dynamics (MD) simulation was implemented to discover the effects of initial spatial heterogeneity on the level of rejuvenation in the Ni80P20 MGs. For this purpose, the samples were prepared with cooling rates of 1010-1012 K/s to make glassy alloys with different atomic configurations. Firstly, it was found that the increase in the cooling rate leads to the widening of Gaussian-type shear modulus distribution, indicating the aggregation in both elastically soft and hard regions. After the primary evaluations, the elastostatic loading was also applied to induce structural rejuvenation into the atomic configurations. The results indicated that the sample with intermediate structural heterogeneity, i.e. prepared with 1011 K/s, exhibited the maximum structural rejuvenation. This event is due to the fact that the atomic configuration in an intermediate structure contains more potential sites for generating the maximum atomic rearrangement and loosely packed regions under an external excitation. The features of atomic rearrangement and structural changes under the rejuvenation process are discussed in details.

Most of the technological operations for the production of meat products are mechanised and carried out using specially designed equipment, including meat grinders. This paper reviews meat grinders of different design and performance, used in both household and industrial applications. The technical characteristics, construction and operating principle of the meat grinder are described.

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Modern professional standards in the field of engineering and computer graphics and industrial enterprises require from young specialists not only high level of technical training, but also confident use of modern computer-aided design systems in their work. In standards the changes demanding creation of the design documentation on the basis of three-dimensional models of a product are included.Three-dimensional modeling has become a benchmark for the supply of demonstration materials in the field of mechanical engineering. Computer graphics today has the tools to create almost any object, and for designers to reveal their creative and professional abilities. The article considers a complex approach to the preparation of graduates of specialty 15.05.01 "Design of technological machines and complexes" on the basis of the Magnitogorsk State Technical University named after G.I.Nosov with the use of computer graphics and integration into the educational process of various computer-aided design systems: KOMPAS-3D, AutoCAD, Autodesk Inventor, APM WinMachine.

The most important components of electrical vehicles are the battery and the related cooling system. These subsystems play a major role in determining the overall electric vehicle performances. In this study, a novel cooling system with fluid in the battery cell is proposed, by which the energy storage system can be optimized through control of the temperature of the batteries. A sensitivity analysis is conducted considering the maximum temperature, the heat rate, the coolant temperature, and the geometry of the cavities. The numerical simulations show that the parameters for the trapezoidal compartment have an impact on the thermal performance of battery. An optimal geometry is proposed accordingly. It is concluded that for high values of Reynolds number for which the flow becomes turbulent, a decrease in the battery temperature can be obtained thereby avoiding thermal stresses.