SUMMARIES

To a question of the study of friction in the kinematic pairs
of spatial mechanisms. **N. Davitashvili, R. Gogodze, G. Kipiani. **“Problems
of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p. 9-23, (Rus.).

In this paper, the study of friction in the kinematic pairs of spatial mechanisms has been given. The received results enable to determine the reaction forces in kinematic pairs and to solve the problems of dynamics with taking into account the friction. 22 ill. Bibl. 13. Russ.

Kinematic precision of Hinged-lever system for the wagon’s
braking with one-side press of the shoes. **N. Davitashvili, A. Chkhaidze, A.
Sharvashidze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7),
p. 24-32, (Rus.).

The definition of kinematic precision of hinged-lever system for the wagon’s breaking with one-side press of the shoes has been given. Taking into account initial (technological) errors of the links, there have been determined the errors of position, velocity and acceleration of outlet links, their points and whole system. 1 ill. Bibl. 6. Russ.

Analytical synthesis of the spatial RSTR type four-bar
mechanism for drawing of the curved line laying on the 2d rank surface using
tangentIAL plane equation. **A. Khalilov. **“Problems of Applied
Mechanics”. Tbilisi, 2002, ¹ 2(7), p.33-37, (Rus.).

Synthesis of the spatial four-bar RSTR type mechanism for
drawing of the curved line laying on the 2d rank surface (cylinder, sphere,
cone’s etc.). The equation of the moving touching plane laying on the *x*nynzn
co-ordinate system was used as a basic one. The equations of the M point of the
coupler of the four-bar mechanism are given in the non-movable *x*0y0z0
co-ordinate system. For solving of
the task the co-ordinates of the M point are taken into the account in the
equation of the tangential plane. Obtained equation is used as a man function a
making possible to calculate searching parameters of the synthesis. 2 ill. Bibl.
6. Russ.

Analytical research of reacting forces and forces of friction
in joints with clearances for diesel actuating mechanism of railway
refrigerator-car. **G. Sharashenidze, S. Sharashenidze. **“Problems of
Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.38-45, (Rus.).

The mathematical apparatus for research of the reacting forces and forces of friction in the joints with clearances is given. The corresponding formulas for a calculation of the forces of friction and reaction forces with regard to a variable desaxial and generalized supplementary coordinates are deduced. 1 ill. Bibl. 4. Russ.

On the construction of mathematical model for the dynamics of
regulation system of EXCAVATING and transporting machine. **A. Tavadze, T.
Mchedlishvili. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7),
p. 46-52, (Rus.).

The design diagram enabling to receive the expressions for generalized forces has been given. The systems of nonlinear and linearized differential equations for the dynamics of the mechanical part of the system under consideration have been developed. 2 ill. Bibl. 2. Russ.

To a study of the dynamics of regulation system for a digging
CONDITIONS by dump position of EXCAVATING and transporting machine. **A.
Tavadze.** “Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7),
p.53-59, (Rus.).

The equations of dynamics for the separated constituents and whole system have been given. The structural schemes of regulation system necessary for consequent dynamical investigation have been constructed. 2 ill. Bibl. 6. Russ.

On generalized problem of almansi for hollow composite
anisotropic cylinder beams. **R. Zivzivadze. **“Problems of Applied
Mechanics”. Tbilisi, 2002, ¹ 2(7), p. 60-64, (Rus.).

The solution of the problem of hollow composite anisotropic sylinder beam’s elastic balance is given when the temperature in the space occupied by the beam is polynomial with regard to the longitudinal coordinate. Bibl. 7. Russ.

Grapho-analitical method of determination of irregularities
of material cutting by the multi-edged tool. **B. Balasanyan. **“Problems
of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.65-68, (Rus.).

A new method of deternimation of total cutting power analytical dependence from the angle of turn of the multi-edged tool is suggested. It is shown in the example of cosinusoidal single impulse of cutting power that the method provides with very high precision for the mathematical description of cutting power dependence from constructive parameters and angle of turn of the cutting tool. 2 ill. Bibl. 4. Russ.

Method of increase of vibration-proofing of processing
systems by the application of ultrasonic vibration. **B. Balasanyan.**
“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.69-72, (Rus.).

New method of increase of vibration-proofing of processing systems by the application of ultrasonic vibration is suggested. Contidions and possibilities of damping of self-induced vibrations of processing systems by the application of elliptical spatial vibration of the cutting tool are determined. 2 ill. Bibl. 2. Russ.

Definition RMST
of Offset Antenna’s mesh surface concerning to the theoretical paraboloid. **Sh.
Tserodze.** “Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.
73-75, (Rus.).

In the given article there is made the analytical definition of RMST of offset antenna’s mesh surface, concerning to the theoretical paraboloid. There is compiled the system of three equations, the first two of them are the planes, intersection of them is the normal to the theoretical paraboloid and the last – the equation of theoretical paraboloid itself. The solution of system is given in radicals. 1 ill. Bibl. 3. Russ.

Definition of the quadratic average RMSA
of offset antenna’s mesh surface concerning to the “Best fit” paraboloid. **Sh.
Tserodze.** “Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7),
p.76-78, (Rus.).

In the given article there is made analytical definition of offset antenna’s mesh surface RMSA, conserning to the “best fit” parabolic. There is compiled the system of three equations, the first two of them determine the planes, which intersection is the normal to the “best fit” paraboloid, and the last is the equation “best fit” itself. The solution of system is given in radicals. The determined approximing function is characterized so that it is paraboloid, modified from the nominal paraboloid in order to minimize the quadratic average deviation of the real surface of reflector from the possible best fit to a paraboloid shape. 1 ill. Bibl. 4. Russ.

The method of manufacturing of a reflecting surfase and its
attachment of a large space reflector. **Sh. Tserodze.** “Problems of
Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.79-82, (Rus.).

The article concerns a new technological method of manufacturing a mesh surface from segments in their stretched states, taking into account for of its subsequent attachment on a frame of a reflector. The schemes of manufacturing of a reflecting surface demonstrate, that the given method enables to tighten net with an estimed value and vibration of a framework to achieve it uniformly tensions. Here also is shown technology of attachment reflecting surface on a frame of a reflector. 3 ill. Bibl. 3. Russ.

The improvement of ore mill regime. **M. Baghdasaryan. **“Problems
of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.83-86, (Rus.).

An approach is offered that allows to improve the ore mill working regime at different qualitatives and quantitative charekteristics of the loading material. The suggested approach gives an opportunity to find the complex of parameters for various technological situations, at which the productivity gets to the highest degree by means of improving the working regime. 1 ill. Bibl. 2. Russ.

Determination of the thickness of cutting tool plates during
machining of preheated jobs. **V. Tsotskhadze, N. Silogava.** “Problems of
Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.87-89, (Rus.).

The cutting tool plates thickness is determined during hot machining of preheated jobs with internal cooling of cutting portion of the tool. The influence of heat conductivity and thermal resistance are taken into account. 2 ill. Bibl. 2. Russ.

Determination of stress deformation of raw silk thread reeled
on the yarn-windER. **G. Jokharidze, V. Tarkhnishvili, A. Kvaratskhelia, N.
Idadze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7),
p.90-92, (Rus.).

The state of stress deformation of raw silk thread reeled on the yearn-winder is determined by the equation of funicular curve for the thread under the evenly distributed loading. On the basis of the obtained results one can conclude that raw silk thread reeled on the yarn-windle is in the complicated stress deformation state, which promotes the rupture of the weak elementary threads with lesser transversal cross-sections that finally reduces thread strength and the thread is accordingly losing its compactness. 2 ill. Bibl. 6. Russ.

Reinforcement of foundations of deformed edifices with the
help of foundation plate by combination with boring-injecting piles. **V.
Japaridze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 2(7),
p.93-94, (Rus.).

The description of a method of a rise of a bearing capacity of the foundations with the help of foundation plate by combination with the boring-injecting piles is cited and the production technology for the corresponding work is given. 1 ill. Bibl. 3. Russ.

For the question of productivity increase of tea picking
machine.** G. Bendeliani, R. Chabukiani.** “Problems of Applied
Mechanics”. Tbilisi, 2002, ¹ 2(7), p. 95-96, (Rus.).

In this paper, the possibility to increase the productivity of a tea picking machine by enlarging its bunker from 1m3 up to 1,8m3 has been considered. Bibl. 3. Russ.

To the calculation of the movable arc’s leadings for the
working organ of a tea picking machine. **G. Bendeliani. **“Problems of
Applied Mechanics”. Tbilisi, 2002, ¹ 2(7), p.97-98, (Rus.).

It is considered the possibility to reduce the friction coefficient in pairings of a tea picking machine, where instead of expensive pressure supports of slip there are used a phtoroplast and the rolling principle. 2 ill. Bibl. 3. Russ.