http://repository.enu.kz/handle/enu/1215 2026-04-04T03:30:33Z http://repository.enu.kz/handle/enu/1237 Justification of model for calculating the traction passability of the wheels of the all-wheel drive car (4x4) with the road Bekenov, T.N.; Merzadinova, G.T.; Nussupbek, Z.T.; Tassybekov, Z.T. Rational operation of existing and design of new designs of self-propelled wheeled vehicles is impossible without a theoretical analysis of their performance properties. In particular, the operation of such machines in heavy road conditions is relevant such operational properties as their traction patency. Given the fact that the operating conditions of self-propelled wheeled vehicles differ in a variety of different road conditions, the correspondence of their traction patency to such conditions will determine the efficiency of their work. The analysis of the operating conditions of all-wheel drive self-propelled machines showed that one of the factors that reduce their efficiency are restrictions on traction patency due to the occurrence of power circulation in their transmission. Therefore, the paper formulates the requirements for traction patency of self-propelled wheeled vehicles. Further, the approach to estimate the redistribution of traction forces on the wheels of self-propelled machines is justified. To establish a direct connection between the traction patency of self-propelled machines on the one hand and the processes of power circulation in their transmission on the other hand, it is proposed to link the processes of calculating the parameters of the front and rear drive wheels of the machine, taking into account the reduced inertia force of the corresponding wheels with the process of assessing the redistribution of traction forces on their wheels. In the end, the equations for calculating the parameters of traction permeability of the front and rear drive wheels of the machine taking into account the reduced inertia force of the corresponding wheels are justified and obtained. 2018-01-01T00:00:00Z http://repository.enu.kz/handle/enu/1235 Investigation of specific properties of leather, which allows a comprehensive assessment of the quality of the new material Toguzbaev, K.U.; Ermakhanova, F.R.; Ibraeva, A.A.; Toguzbaeva, A.A. Investigations of the material’s resistance to moisture, sweat, oxidation, and exposure to aggressive media have been carried out. The study of the properties of the experimental leathers of the chromalumotitanium-synthane method and its comparison with the properties of the control leathers of the chromium-zirconate skin treatment method showed that the joint use of tanning compounds of chromium, aluminum and titanium makes it possible to increase water resistance and persistence, resistance to oxidation mixture and skin resistance to aggressive media. It is established that the advantage of the proposed technology of skin treatment in comparison with the traditional method of skin production. The intensity of changes in the structure of the skin depends on the processing technology. It has been revealed that experienced skin has an increased resistance to moisture, sweat, oxidation and exposure to aggressive media. 2018-01-01T00:00:00Z http://repository.enu.kz/handle/enu/1230 Innovative method of development of building products by using of 3D printer Bazarbayev, D.О.; Utepov, Y.B.; Taizhanova, B.B. The article is devoted to the importance of applied practice in the field of building materials, products and structures. The article gives definitions of the concepts such as "solution", "3D printer", "extrusion technology". The advantages of an innovative development method based on the use of 3D printer and its capabilities are determined. The content of the experimental studies and the results obtained are described in detail. The ways of using the fillers of river sand for working with a 3D printer are determined. Based on the definition and classification of the optimal composition of the building solution, its mobility is also provided. The 3D printer uses extrusion technology, and every new layer of building material made by extrusion to the previous layer, and increases its efficiency and productivity. 2018-01-01T00:00:00Z http://repository.enu.kz/handle/enu/1228 Hazards regarding to freezing-thawing and freezing index Shakhmov, Zh.A.; Tleulenova, G.T.; Ikapova, I.S. Frozen process of the soil ground of the foundation of construction sand buildings is the challenging task in general construction. There are a lot of factors which influence to the freezing soil process such as properties of soil, climatic conditions, underground water location and so on. This paper present sone factor such as climatic data, especially freezing index. Many graphs give importantinformationand source of design regarding to freezing problem. The freezing index can be used to determine the depth of freezing. This can be used primarily in determining the depth of freezing, segregational potential of ice formation in the soil, etc. Moreover, an important role in the construction is determining the optimal foundation depth, which can be determined by the freezing index.] 2018-01-01T00:00:00Z