Summaries

To the question of determination of reacting forces in the
kinematic pairs of spatial mechanisms. **N. Davitashvili**. “Problems of
Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 9-16, (rus.).

In this paper, the analysis and determination of reacting forces in spatial hinged-lever mechanisms in rectangular coordinates and in vectorial representation have been given. The obtained results are suitable for dynamical investigation of spatial mechanisms. 5 ill. Bibl. 5. Russ.

Kinematic and Dynamic Simulators for Parallel structure Robot.
**R. Alizade, T. Dostalizade, R. Dostalizade. **“Problems of Applied
Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 17-20, (engl.).

The spatial 3-THT-type parallel structure robot has been considered in present paper. The presented robot is identical to device, which has used as the androgynous docking mechanism of spaceship.

Method of kinematic and dynamic analyses has been presented
in the paper. Analysis of

3-THT-type robot was carrying as example of using this method. Analysis of these
mechanisms in analytical form is impossible. Appearance of necessity to create
methods of analysis of spatial robots directed to using computers. The matrix
calculus has been used as a mathematical apparatus. Finally, programmable
simulators of kinematic and dynamic analysis of parallel structure robots were
obtained. 3 ill. Bibl. 8. Engl.; summ. russ.

For analysis of dynamic of multicommunication system of
electric locomotive’s tractive drive. **G. Chkhaidze, A. Chkhaidze, T.
Mchedlishvili.** “Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8),
p.21-25, (rus.).

The methodology of creation of nonstationary models of dynamic and structural scheme of research system of electric locomotive’s tractive drive is given. Ways of further dynamic researches are outlined. 1 ill. Bibl. 9. Russ.

Investigation of dynamical precision of system for the
wagon’s braking with one-side press on the shoes. **N. Davitashvili, A.
Chkhaidze, A. Sharvashidze. **“Problems of Applied Mechanics”. Tbilisi, 2002,
¹ 3(8), p. 26-37, (rus.).

The investigation of dynamical precision of hinged-lever system for the wagon’s breaking with one-side press on the shoes with taking into account initial errors has been given. The obtained results provide with precision increase and reliability for designed and prepared hinged-lever systems. 2 ill. Bibl. 4. Russ.

Analytical research of dynamic and kinematic precision of
crank-slider mechanism with clearances of diesel engine of railway
refrigerator-car. **S. Sharashenidze.** “Problems of Applied Mechanics”.
Tbilisi, 2002, ¹ 3(8), p. 38-43, (rus.).

The dynamic model of the cranck-slider mechanism, made by author, is utilized. The analytical research of a dynamic and kinematic precision of the mechanism with regard to a clearances in the joints, is given. The necessary expressions are received. 1 ill. Bibl. 2. Russ.

Constants and mechanics of cosmic motion. **G. (A). Gasviani.
**“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 44-58, (engl.).

In this paper, by posing and formulary proving original ideas there is introduced new approach in science. These ideas and formulas may cause the considerations of specialists of mathematics, astronomy and physics. Bibl. 6. Engl., summ. rus.

Construction of the large space reflector, received by
synthesizing of ring-type and rib-umbellate systems. **Sh. Tserodze, E.
Medzmariashvili. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p.
59-61, (rus.).

The article concerns to the invention of the principally new scheme of the antenna, both for the symmetrical and asymmetrical radio telescopes. The novelty is, that by synthesizing of ring-type and rib-umbellate systems we have achieved a new technical and technological effects. In particular central node of joint of main pantograph arms is displaced in one side, therefore the vertical racks joining adjacent sections, during the deploying of a ring are unfold on radial directions from center to a periphery and at the same time are unwrapping like umbrella. 4 ill. Bibl. 3. Russ.

Calculation tensely-deformed conditions of the radial retal
of the large-sized space reflector by the method of finITE elements. **Sh.
Tserodze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 62-64,
(rus.).

In the given article there is the theoretical analysis of a part of shape-forming structure of a large-sized space reflector. For solving a task, first of all, the geometrical parameters of a design of form-building structures, then property of the used materials and elements, and also boundary conditions with influencing efforts have been defined. It has been received an epure of tensely – deformed conditions and the maximal movements of a final point of a petal. 6 ill. Bibl. 3. Russ.

New super-lightweight rod-membrane constructions with
adjustable shape-forming structures. **Sh. Tserodze. **“Problems of Applied
Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 65-68, (rus.).

The article represents a new approach to the rib-umbellate systems, and in particular to the super-lightweight, rod-membrane constructions with adjustable surfaces. Shapeforming structures are composed with membranes and with bended hollow rods of variable cross-sections. In turn, the reflecting surfaces are regulated with the specially built-in tenders. Manufacturing of seven-meter static models of the offered designs has been proved, that achievement and preservation of its paraboloidal form with the help of the given schemes quite really. 6 ill. Bibl. 2. Russ.

Unconformity of reflection of the deformating zone –
inadequate to the method of transformation of Furre for formation of
transmissive function of the sensor of fiber light conductor. **D. Bakhtadze, G.
Lagundaridze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p.
69-70, (rus.).

It is proved in the work, that transmissive function of fiber light conductor, realized by transformation of Laplas, enables to transport the topology of deformating zone by means of fiber light conductor, in the case, when the reflection of the contour of this zone on the income surface of the fiber is conformable. But, as it seems, in this case too, graphic solution will be more stable. The necessary aspect of this kind of situation is, that reflection of deformating zone on the income surface in the memory of ECM has to be consequently compared with the solutions of equations, attained in integral form of Furre as well as Laplas. At the same time, it is permitted limit indications of stress that appears in the material under dynamic loading. Bibl. 2, Russ.

The method of dynamic evaluation of reflection of deformatiON
process by means of fiber-optical light sensors. **D. Bakhtadze, G.
Lagundaridze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p.
71-74, (rus.).

In the work, there is proved that for stability of deformation process a big practical meaning has the method of evaluation of dynamic bifurcation. This criteria enables to control the deformating process by means of fiber-optical light conductor, from the point of view of construction optimization, with the purpose of attaining the maximum safety. Bibl. 3. Russ.

On one approach in calculation of construction taking into
account shear in thickness. **S. Bliadze, M. Tsikarishvili, G. Kipiani, D.
Bakhtadze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 75-81,
(rus.).

Stifness matrix for triangular finite element is created which makes possible to take into account shear deformation in thickness. Element matrix is modified in the way to be equivalent to the addition of the stems joining the upper and lower nodes. Stiffness of the stems is in correlation with the stem’s element stretched perpendicularly to its plane. 1 ill. Bibl. 6. Russ.

Quadrangular finite elements with the account of TRANSVERSAL
SHIFT. **S. Bliadze, M. Tsikarishvili, G. Kipiani, D. Bakhtadze. **“Problems
of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 82-87, (rus.).

Stifness matrix for quadrangular element is created which makes possible to take into account shear deformation in thickness. Element matrix is modified in the way to be equivalent to the addition of the stems joining the upper and lower nodes. Stifness of the stems is in correlation with the stifness of the element stretched perpendiculary to its plane. 1 ill. Bibl. 7. Russ.

OptImisation of dynamic processes for adjustable hydrogeaR.
**R. Makharoblidze, Z. Makharoblidze, J. Dzirkvadze. **“Problems of Applied
Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 83-90, (rus.).

By means of criterion the quickness of action, there is deduced conditions and the rated formula for optimum combination of hydromechanical parameters of hydrogear the working organs of machines. Bibl. 3. Russ.

The results of experimental research of the conditions of
high humidity. **N. Gabunia, I. Okujava, N. Pkhakadze, V. Motiashvili. **
“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 91-93, (rus.).

In the article there are given the results of the research and the testing of the fertilizer-distributing equipment and the selection of their working elements. 4 ill. Bibl. 3. Russ.

Making of spatial details with compound profile of glue wood.
**Z. Chitidze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p.
94-95, (rus.).

The problems, which are bound up with a using of the saving resources technologies in the woodworking industry: the making of the spatial details with the compound profile of glue wood-out of a lumpy waste of wood of a valuable species, is considered. 1 ill. Bibl. 2. Russ.

Wood-turning instrument with wear-proof covering. **Z.
Chitidze. **“Problems of Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 96-98,
(rus.).

The problem of raising the quality of the turning instrument material by a dusting of the wear-proof covering on the hard-facing alloies’ surface is considered. 3 ill. Bibl. 3. Russ.

On problem of raising the quality of labour of trains’
marshalling stations. **A. Chkhaidze, G. Telia, G. Chkhaidze. **“Problems of
Applied Mechanics”. Tbilisi, 2002, ¹ 3(8), p. 99-106, (rus.).

In article it is maped out the ways of subsequent development of trains’ marshalling stations; the rational schemes of sorting yards, district and goods traffic stations are offered, which allows assure a necessary carrying capacity owing to the disposition in the stations of the high-powered sorting humps, equiped by the up-to-date means of mechanization and automation of the marshalling a wagon’s in accord its destinations. 4 ill. Bibl. 5. Russ.