SUMMARIES
Optimal control of electromechanical system multimotorical drive. R. Adamia, J. Dochviri. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p.11-16, (rus.).
Mathematical model of the system is constructed by linear equations of state space the parameters of which are given in the form of Jordan matrix. The expressions are developed to evoluate stability of the system. For optimization of the system are used Riccati equations and Hamilton matrix. Optimal values of coefficients of feedback junctions of Kalman-Bucy Filter are defined. It is established that by introduction of flexible feedback junctions with the help of evaluating signals of engine derivative speeds, elastic mechanical oscillations are effectively suppressed in the drive system. 2 ill. Bibl. 8. Russ.
Dynamics oF the hinge-lever system for carriage’s braking with shoes’ one sided pressing. N. Davitashvili, A. Chkhaidze, A. Sharvashidze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p.17 - 27, (rus.).
In this paper is given the dynamic analysis on the whole hinge-lever system for carriage’s braking with shoes’ one sided pressing, when the transmission links are absolutely tough. 2 ill. Bibl. 4. Russ.
To the synthesis of a traction drive of an electric locomotive an the given transient processes. G. Chkhaidze, A. Chkhaidze, T. Mchedlishvili. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p.28 - 34, (rus.).
The technique of forming of desirable processes is given. The mathematical dependences for definition of values of synthesized parameters in “chosen” systems of the examined drive are obtained. 2 ill. Bibl. 8. Russ.
Differential electromechanical transmissions of mobile machines. A. Getsadze, G. Imedashvili, K. Imedashvili. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 35 - 38, (rus.).
The problem of creation of up-to-date electromechanical transmission, meeting most fully the requirements of realization the optimum operational regimes, is posed.
The matrix for description of the Kinematics of a differential box for change of gear trains permitting most visually and simply pass to machine equations allowing carry out the rejection of spollage in the process a sorting out the schemes’ continuum. 5 ill. Bibl. 6. Russ.
Theoretical estimation for the upper limit of reflecting surface rms of offset reflector for mesh of different cell dimensions and marking of points on the antenna surface with the aim to prove further experimentally the rms. E. Medzmariashvili, M. Djanikashvili, Sh. Tserodze, K. Chkhikvadze, A. Sarchimelia. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p.39 - 42, (rus.).
In the given article there is accomplished the theoretical estimation of upper limit for RMS of offset reflector surface that was modelled geometrically in the computer program MSC/NASTRAN-V6.0 (based on the method of finite elements), taking into account the “pillow effect” of the mesh. The theoretical development of the method for observed points choosing on the surface of antenna mesh that gives us the possibility to fulfil the experimental measurement (under the real conditions) of reflector surface with the means of geodesic devices, has the certain importance. 5 ill. Bibl. 3. Russ.
The geometry and the analytical investigation of the surface of offset reflector. E. Medzmariashvili, Sh. Tserodze, K. Chkhikvadze, A. Sarchimelia, L. Datashvili. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 43 - 46, (rus.).
In the given article there are determined the geometric parameters for the paraboloid of offset surface. Having solved this problem we become able to make the description of the antenna surface analytically, both for global and local coordinate systems. The displacement of the surface is necessary in order to provide a complete use of the area of reflecting surface inasmuch as during the incidence of rays parallel to the focal axis onto the theoretical paraboloid, its central part is shadowed by a focal container and what about the displaced (offset) surface, it stays completely free of this shortcoming. 3 ill. Bibl. 5. Russ.
The Energetical Estimation of Process of Scatterion Vegetating Materials in the Mobile agricultural machines. R. Makharoblidze, Z. Makharoblidze, J. Dzirkvadze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 47 - 51 , (rus.).
Is establishment functional dependence of energetical index of process scatterion from Physico-mechanical property of vegetation, construction and exploatation parametrs of mobile aggregate. Bibl. 2. Russ.
Impact of machines on the condition of tea interrows and ways of its reduction. N. Gabunia, N. Pkhakadze, I. Okudjava. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 52 - 58, (rus.).
The article deals with the peculiarities of tea cultivation in Georgia and the results of a long-term investigation of the impact of the running dear of a serial set of machines on the state of tea interrows. A new generation of machines based on a small-size ecologically more safe and accessible under market economy conditions power unit (MES – 0,2) is proposed. 7 ill. Bibl. 7. Russ.
Design of Parameters of Tools of the Machines for Placing Mineral Fertilizers into Interrows of Tea Plants. I. Okujava. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 59 - 63, (rus.).
The article analyzes the results of longterm tests and operation of serias machines for placing mineral fertilizers into tea interrous. For the purpose of eliminating their shortcomings new tools arc discussed and their parameters’ design is giver. 4 ill. Bibl. 3. Russ.
The method of intermediate problems and the tensor theory of circuits. A. Milnikov. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 64 - 66, (rus.).
The method of construction of the base problems in the method of intermediate problems is offered. Is proved, that as those it is necessary to consider either pure-loop circuits, or - pure-node circuits as the resolvents of these systems are easily defined (determined) in a general view and the eigenvalues (importance) are easily calculated. As the base operator tensors of pure-loop or pure- node circuits must be considered. Bibl. 5. Russ.
Basic boundary problems of nuvie-stocks linearized stationary equation for kernel. K. Skhvitaridze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 67 - 72, (rus.).
In this work, it is researched basic boundary problems of noncompressible liquid balance system of equations for the kernel, when speed of liquid or stress-vector is given at the boundary. The solutions are obtained as absolutely and uniformly convergent series. Bibl. 4. Russ.
Large displacements of thermoElastic beams during plane bend. O. Kikvidze, L. Kikvidze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 73 - 77, (rus.).
In the article plane bend of beams during thermomechanical loading, when displacements are large and thermoelastic axis is deformed, is considered. The strain of thermoelastisity axis and crookedness is obtained from equilibrium integral equation in the cross section. 4 ill. Bibl. 6. Russ.
Optimization of laser cutting of materials using power fiber-optical elements. J. Bakhtadze, M. Tsikarishvili, I. Charakashvili. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 78 - 80, (rus.).
The development of an original optical device using power fiber-optical element for optimization of laser cutting of materials is given. 3 ill. Bibl. 4. Russ.
The effective method of strengthening of high retaining walls. V. Japaridze, E. Alexsandrian, V. Kasradze, A. Chikobava, D.Chikobava. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 81 - 83, (rus.).
The effective method of strengthening of high retaining walls by anchor devices in a ground and the practical experience of their application in constructions have been given. 2 ill. Bibl. 3. Russ.
Heightening of the seismic stability of large-block buildings by vertical tension bars. V. Japaridze, E. Alexsandrian, V. Kasradze, A. Chikobava, D. Chikobava. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 84 - 86, (rus.).
The way of heightening of spatial rigidity and seismic stability of large-block buildings by vertical tension bars posed in drilled toothings on a surface of wall-blocks has been offered. The technology of operations and the necessary equipment have been given. 1, ill. Bibl. 2. Russ.
The device for investigation of forces at carving wood materials. Z. Chitidze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 87 - 89, (rus.).
The special four-track device enabling exact measurement of small forces when carving at fast processes has been offered. 2 ill. Russ.
Heightening of the stability of a woodcutting instrument with wear-resistant coverages. Z. Chitidze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 90 - 91, (rus.).
The point of heightening of the resistibility of hard-wearing coverages to destruction by a method of creating an interlayer-carbonitriting of cutting instrument’s surfaces have been considered. 2 ill. Bibl. 2. Russ.
Account of deformation resistance at the heat-mechanical treatment (HMT) of the malTed surfaces for two-measured deformation zone. D.Kasradze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 92 - 95, (rus.).
The questions of dynamics in the two-measured deformation centre at the HMT are considered. Appling the planity conditions on contact and hypothesis of flat sections is deduced the differential equation for definition of contact pressure in the deformation centre with the formula for account of deformation resistance of melted surfaces is received. 2 ill. Bibl. 4. Russ.
Heat-mechanical treatment (HMT) forms of the malted surfaces. D. Kasradze, G. Gachechiladze, T. Kasradze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 96 - 99, (rus.).
In this article the malted surfaces forms got by HMT (running in, vibration running in, etc), using the forming tools and their combinations (vibration striker, roller, vibration roller) are examined. 6 ill. Bibl. 3. Russ.
Stressed-strained state in a tree-layer plate with cuts and holes on the basis of analytical solution. G. Kipiani, E. Machaidze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 100 - 102, (rus.).
The calculation method for stressed-stained state in tree-layer plate with cuts and rectangular – form holes has been considered. The method of taking into account the breaks is based on the usage of special discontinuous functions which have been introduced not only in initial relations but also in the sought for solution. 2 ill. Bibl. 2. Russ.
The methods of decision’s continuation by parameter in the nonlinear problems for a plates and membranes with steped-variable thickness. V. Karpov, D. Kipiani. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 103 - 105, (rus.).
The method of decision’s continuation by parameter for a decision of the nonlinear problems of a plates and membranes’ theory is considered. A comparison with method of consecutive loads is given. With a given load’s parameter is discovered the ribs’ altitude, supporting a membrane, when it kept in stability. Bibl. 3, Russ.
The Technology of drawing out of a thin tape or a treads. A. Buksianidze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 106 - 108, (rus.).
The modele of a formation of an inside residual strains in the process of a formation of the residual constructional material from one’s melt when it is got cold, is considered. En equations, describing a different stages of the technological process of a drawing out of the thin tape from a melt in the temperature field of a high gradients, is deduced. 1 ill. Bibl. 2. Russ.
About a tolerance of error’s quantity of real strength’s variation from one’s designed value. G. Pkhikidze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 109 - 112, (rus.).
The method of practical application of the methods’ complex of mathematical statistics is supplemented with an estimate of the error’s tolerance of a strength’s variation coefficient from one’s designed value. In the capacity of an example is considered the applications of statistical problem about the estimate of a difference’s importance when an alternative variation. 2 ill. Bibl. 2. Russ.
The problem of dynamic Of the unisotropic body in thermoelasticity. R. Zivzivadze. “Problems of Applied Mechanics”. Tbilisi, 2001, ¹4(5), p. 113 - 115, (rus.).
The algorithm of the leading of the solution of the problem of dynamic of the unisotropic body to the solution of the problems of statics is given, when the distributed temperature in the body, components of the volume force acting upon the body and the components of the given movements on the surface of the body are polynomials to time. Bibl. 3. Russ.