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GENERAL PROBLEMS OF MECHANICS |
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Vysotski M.S., Vityaz P.A., Sosnovskiy L.A.
MECHANOTHERMODYNAMIC SYSTEM AS THE NEW SUBJECT OF RESEARCH
It is shown that representation about mechanothermodynamic system inevitably conducts to working out of substantive provisions of new physical discipline — mechanothermodynamic
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5 |
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Algin V.B., Verbitski A.V., Mishuta D.V., Sirenko S.V.
CALCULATION OF REAL RELIABILITY FOR MACHINES. THE TECHNIQUES, SOFTWARE TOOLS AND SAMPLES
A survey of regulations, techniques and software tools of the leading foreign developers in calculating the reliability of technical systems ReliaSoft and Relex Software are carried out. Techniques and software tools of our country for calculating the machines reliability developed on the basis of research9related failures, the complex logic of limiting states and variations of operation conditions are described. Samples of usage of developed software tools for calculating reliability and durability indexes for the stage of the virtual machines designing are presented
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11
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MECHANICS OF MOBILE MACHINES
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Mikhailau V.V., Zhuk I.V., Verbitski A.V., Salodkaya M.G.
VERIFICATION FOR THE CALCULATION THE LOADS IN THE CONTACT OF THE VEHICLE?S WHEELS WITH A ROUGH ROAD SURFACE
To verify the car oscillation mathematical model between one and road surface is given a sequence of initial data set. The paper shows satisfactory agreement between calculated and experimental values of control parameter being compared to all selected speed range of 60—100 km/h. Mathematical analogy of motion is selected as the object for subsequent implementation plan to determine of the dynamic interaction of a moving car stream on the road
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24 |
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Basalaev V.N., Kovalenko A.V.
INVESTIGATION OF THE GEARSHIFT PROCESS UNDER LOAD AND OPTIMIZATION CONTROLLING THE FRICTION CLUTCHES OF MECHANICAL TRANSMISSION
Obtained the analytical dependences to reduce the load on a mechanical transmission in gearshift process under load. Proposed optimal control laws for the friction clutches of mechanical transmission that provide the required quality of the process in accordance with established estimated figures
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18
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ENGINEERING COMPONENTS
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Nikolaev Yu.I., Poddubko S.N., Mackiewicz A.A., Staskevich S.G., Pavlov Yu.E.
UNIFIED HYDRAULIC SYSTEM OF AUTOMATIC CONTROL AND LIFE SUPPORT FOR THE FAMILY PROSPECTIVE HYDROMECHANICAL TRANSMISSION MWTP
In the paper considered the schematic circuit, operating principle and arrangement of components assemblies and mechanisms unified hydraulic control system and life support for the family prospective hydromechanical transmission MWTP. The parameters and characteristics are shown for the main regulatory systems and hydraulic mechanisms
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33 |
Kipen T.V., Karotki V.S., Kochetov S.I., Kharytonchyk S.V.
DRIVER’S WORKSPACE PARAMETER OPTIMIZATION
IIn the article the issue concerning driver’s workspaces of existing vehicles and vehicles to be designed is being researched in order to increase the efficiently of human resources
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39 |
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Klimuk A.C., Supron A.M.
CHOICE FOUNDATION FOR BUILDING FULL-FEATURED, EASILY MODIFIABLE ENGINE MANAGEMENT SYSTEM
Reviewed and analyzed the history of the development of electronic control diesel engine in order to identify patterns and develop recommendations for development of extensible, full-featured, easy to be modified engine management system the next generation
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43 |
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DYNAMICS DURABILITY OF VEHICLES AND STRUCTURES
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Antonjuk V.E., Aleksandrova V.S., Turomscha V.I., Dovnar S.S., Kovaleva I.L., Truhnov L.I.
ESTIMATION OF THE INTENSE DEFORMED CONDITION OF DETAILS OF A REDUCER OF A MOTOR-WHEEL OF A CAREER DUMP-BODY TRUCK
Results of is final-element modelling of the basic details of a reducer of the motor-wheel used in career dump-body trucks are resulted. The main pressure, equivalent pressure, deformations and movings are defined. The most pliable places in a design of a reducer of a motor-wheel are revealed, expected concentrators of pressure are specified. Recommendations about increase in rigidity of a design of a reducer of a motor-wheel and to reduction in it are given concentration of pressure
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46 |
Nazarenko V.G, Daleckaya J.B.
ESTIMATED PARAMETERS FOR THE TRANSIENT OSCILLATIONS OF A MECHANICAL SYSTEM WITH ONE DEGREE OF FREEDOM IN THE VIBRATION TEST
When testing by sweep method the items are operated by the vibrations at all the frequencies within the range. Choosing the conditions of the accelerated tests on the action of sinusoidal vibrations with variable exciting frequency requires determining of dynamic amplitude9frequency characteristics (AFC) of items. The solution of differential equation of the load kinematic excited motion and the results of theoretical and experimental study of AFC of mechanical systems under transient vibrations are given. The parameters of the dynamic AFC depending on the speed of frequency scanning are worked out. Data processing are resulted in receiving empirical dependences for evaluating the maximum value of acceleration-relative transfer ratio, the ratio of the maximum of dynamic AFC frequency shift relative to the frequency of natural oscillations, coefficient of expansion of the dynamic resonance frequency band, the ratio of average AFC frequency shift relative to the frequency of natural oscillations for the exponential and linear laws of frequency scanning. The experimental data correlated with a high degree of compliance with theoretical results
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51 |
Bosiakov S.M., Zhiwei W.
DETERMINATION OF THE NATURAL FREQUENCIES OF SIMPLY SUPPORTED-CLAMPED ANISOTROPIC CYLINDRICAL SHELLS FROM THE ORIENTED FIBERGLASS
In the present paper results of definition of natural frequencies of simply supported9clamped thin cylindrical shells from the focused fiberglass considered as homogeneous monolithic anisotropic material are presented. Constants of elasticity of a material of a shell depend on an angle of winding of fiber glass. Natural frequencies of a shell are found in the assumption, that central lines have the spiral form. Constructions of dependences of frequencies from an angle of winding of fiber glass for various parameters of wave formation and the geometrical sizes of a shell are executed
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54 |
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MECHANICS OF DEFORMED SOLIDS
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Kulikov I.S., Klus S.A.
METHOD OF CALCULATION OF THE STRESS-STRAIN STATE OF BODIES HAVING CYLINDRICAL GEOMETRY OF FINAL LENGTH UNDER ACTING OF IRREGULAR HEATING, NUCLEAR RADIATION
Features of the stress-strain state of bodies have cylindrical geometry under acting of irregular heating and nuclear radiations on an example of the short thick-walled cylinder are considered. The basic parities for the numerical decision of the given problem taking into account plasticity and creep deformations are received
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58 |
Guliyev S.M.
NUCLEATION OF THE CRACK IN THE PUNCHED BODY AT TRANSVERSE SHEAR
The problem of mechanics of fracture about nucleation of the cracks which are starting with contours of circular apertures punched isotropic body at transverse shear is considered. The solution of a problem on balance of the punched body at transverse shear with prefracture zones is reduced to the solution of two infinite algebraic systems and two nonlinear singular the integro-differential equations with a nucleus such as Cauchy. From the solution of these equations are tractions in zones of nucleation of cracks. The condition for the appearance of a crack is formulated, taking account of the criterion of the limit traction of the bonds in the material
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62 |
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TECHNOLOGICAL MECHANICS
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Rudenko S.P., Shipko A.A., Valko A.L., Kuzmenkov O.V.
DESIGNING OF HIGHLY EFFECTIVE TECHNOLOGICAL PROCESSES OF CHEMICAL HEAT TREATMENT OF THE VEHICLES TRANSMISSION GEARS
The new approach is led to a choice of technological modes of chemical heat treatment of high durability gears. Software for designing of highly effective technological processes of chemical heat treatment of the vehicles transmission gears are offeredg
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67 |
Stepanenko D.A., Minchenya V.T., Minchenya N.T.
VIBRATION OF FLEXIBLE ULTRASONIC WAVEGUIDES BY MEANS OF TRANSFER-MATRIX METHOD
The article considers application of the transfer-matrix method for calculating resonant frequencies of longitudinal vibration of flexible ultrasonic waveguides. Correctness and efficiency of the suggested method are verified by finite9element modelling as well as by the results of experimental studies
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71 |
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MECHANICS OF TRIBO-FATIGUE SYSTEMS
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Sherbakov S.S.
DYNAMICS OF TRIBO-FATIGUE SYSTEM
Dynamic loading of tribo-fatigue system leads to development of non-stationary process of cyclic deformation in a zone of contact interaction. In system a roller/shaft at simultaneous realisation of a rolling friction and not contact bend of a shaft on a contact surface irregular wavy residual damages (the phenomenon troppy) are formed (under certain conditions). On the basis of results of an experimental research of the specified damages observed in process of wear-fatigue tests, the mehaniko-mathematical model which well describes the phenomenon troppy with the account as movements of tribo-fatigue system, and its non9stationary is intense-deformed condition and a condition of damage is constructed. It is shown that wavy damages of rails while in service can be considered as a special case of troppy; it opens ways for effective search of methods of struggle against them
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76 |
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Kozik A.N., Vorobyov V.V.
INFLUENCE OF CORROSION DAMAGES ON CARRYING ABILITY OF OIL PIPELINES
Characteristic kinds of local corrosion damage of an internal surface of pipes of underwater transitions after long (more than 35—40 years) operation are established: in the form of an oval and an extended strip; the mechanism of their formation is described. By specially put natural experiments (destruction of petrowire pipes at test under pressure) is shown that after long operation zones with local corrosion damages are dangerous not zones of longitudinal welded connections, namely. The method and technology of restoration of working capacity of underwater transitions after their long operation is stated; it provides decrease in risk of failures and safety increase
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81 |
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INTELLECTUAL PROPERTY
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ÎVERVIEW OF INTELLECTUAL PROPERTY OBJECTS OF THE JOINT INSTITUTE OF MECHANICAL ENGINEERING OF THE NATIONAL ACADEMY OF SCIENCES OF BELARUS
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86 |
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BOOK REVIEW
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NEW BOOKS IN THE FIELD OF MECHANICAL ENGINEERING |
90 |
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ISSUE AUTHORS
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ISSUE AUTHORS
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93 |
