SUMMARIES

**Engineering
Methods of Optimization of Oscillation Processes and Rational Design of
Mechanical Systems.** **Adamia R., Gogava A., Gamezardashvili Z.,
Gongliashvili V.**”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1,
p.15-22 (engl.).

Methodology of optimization synthesis of linear multimass mechanical systems oscillation processes and rational design of structural schemes is offered, allowing to choose rational relationship of machine transmission elastic-mass (inertial and stiffness) parameter ensuring their steady functioning with minimum dynamic coefficient at transition regimes. Ill.6, bibl. 3.

**Research of
dynamic precision of four-bar planar slider-crank mechanisms.** **Davitashvili
N.** ”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1, p.23-31 (rus.).

The work is about the research of dynamic precision of four-bar planar slider-crank mechanisms with the first error taken into account. The given results provide for increasing precision and reliability of practisized and prepared linkage mechanisms. Ill.6, bibl.7.

**Modeling of
Dynamics of performance with Regular Elastofrinctional units**. **Gogilashvili
V. **”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1, p.32-41 (rus.).

Real mechanisms of chain structure consisting of similar structural elements the deformation of which have been modeled by the use of position functions were considered.

Analysis of motion of the elastofrictional elements to be determined and the whole system at large was carried out according to the system of differential equations by the use of real indices of the system. On the grounds of the obtained relationships, the accuracy of positioning of performance mechanisms of lomgotudinal chain system of the antenna of cosmic designation was determined. Ill.6, bibl.5.

**Structure and
Dynamics of Vibrosafe Striping Grinding Machines.** **Sulamanidze N.,
Mchedlishvili T**. ”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1,
p.42-47 (rus.).

The description of structural scheme and of constructions of designed suspended striping grinding machines is given. The methodics of constructions the mathematical models of dynamics and results of research of vibro mations are given. Ill.3, bibl.6.

**Evolvent
coordinates for transformation of Spherical surfase on Plane.** **Natsvlishvili
Z**. ”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1, p.48-51 (rus.).

The problems concerning the transformation on a plane of the parametres of separate points and objects located on spherical surfase are discussed. Modelling based on evolvent coordinates utilization may be used in different branches of science and technique. Ill.2, bibl.2.

**Dynamic researh of
planar six-bar linkage mechanisms of needle of sewing-machines with friction in
kinematic pairs taken into account.** **Davitashvili N., Pkhakadze N. **”Problems
of Applied Mechanics”. Tbilisi, 2000, ¹1, p.52-55 (rus.).

The work is about the dynamic research of planar six-bar linkage mechanisms of needle of sewing-machines with friction in kinematic pairs taken into account. Differential equalizations are given that characterize frue rules of motion of electric-motor and mechanism with friction in kinematic pairs taken into account. Ill.4, bibl.5.

**Planerary gear
rank decreases in the technological machines drives of the trajectory type**.
**Imedashvili G., Imedashvili K., Tsintsadze Z., Khuchua V.** ”Problems of
Applied Mechanics”. Tbilisi, 2000, ¹1, p.56-59 (rus.).

Planetary machines of the trajectory type are examined and it is show that they are more perspective in up-to-date technology. It was Sound that insignificant action on the machine kinematics parameters lead to considerable raising the productivity of technological process. Using the instrument whirl effect (it was fixed by one of the authors) in operation we have managed to simplify the complexity of the cinematic scheme and provide great technico-economie benefits. Ill.3, bibl.5.

**Algorithm of
solving for the concrete problem of calculating the rectangular plate with the
hole of the same form.** **Gudushauri I., Kipiani G., Danelia D.**
”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1, p.60-68 (rus.).

For the solution of the given problems the so called analytical method of large blocks (MLB) is used which has been developed on the basis of the theory of elasticity in ordinary differential equations. Ill.1, bibl.5.

**Application of
computer technologies for solution of the machine-building problems**. **Bokuchava
G.V., Bokuchava G.G. **”Problems of Applied Mechanics”. Tbilisi, 2000,
¹1, p.69- 75 (rus.).

In this article the scientific and technic problems of contemporary machine-building production are given solution of which by computer technologies considerably decreases the creation date of industrial goods and increases their quality. Ill. 3 bibl. 3.

**Study of the
particle motion with breaking on the Vibrating surface with variable Vibrating
Angle.** **Megrelidze T. **”Problems of Applied Mechanics”.
Tbilisi, 2000, ¹1, p.76-80 (rus.).

The equations of particle motion and conditions of motion with breaking off are given. The equations for determination of the domains of possible flight and slide are solved by methods of iteration. The problems of transient and steady-state conditions are solved numerically. The average velocities of particle motion per cycle with and without breaking off are theoretically calculated and compared. Ill.1, bibl.3.

**On Allowing for
the Glass-reinforced Plastics Creeping in Designing Aircraft Structure Elements.**
**Dumbadze A. **”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1,
p.81-83 (rus.).

With the introduction of a design model the glass-reinforced plastic anisotropy is taken into account. The stressed state of aircraft structure elements in cylindrical bending of a plate has been studied. Bibl.2.

**To the problem of
outcome velocity of grinded timber from the bunkers.** **Bokolishvili
B. **”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1, p.84-85 (rus.).

The paper is devoted to the investigation of outcome velocity of grinded timber from the bunkers. Here determined the factors, which influence on the outcome velocity and offered the formula of definition of average velocity. Ill.1.

**Development of
method of control of quality of surfase of details for optimization of
technological processes.** **Seskuria Z**. ”Problems of Applied
Mechanics”. Tbilisi, 2000, ¹1, p.86-89 (rus.).

The paper is devoted to reduction of manufacturing expenses, improvement of quality of control and enhancement of range of controlled materials and improvement of control over technological processes. Ill.3, bibl.4.

**Axiomatization of
the Theory of Transformable systems. Tevdoradze G. **”Problems
of Applied Mechanics”. Tbilisi, 2000, ¹1, p.90-92 (rus.).

The paper is devoted the description of reorganization process for engineering theory of transformable systems (created by Prof. Elgudja Medzmariashvili) into mathematical theory using the method of axiomatism. The author has chosen elements and systems as initial terms for axiomatical theory of transformable systems, relations of belong, connection, length and type and form - as its initial relations. After this it’s possible to create the axioms system, to introduce new terms and relations with the help of definitions, and to prove theorems about their properties. The author shows that such axiomatical theory of transformable systems is non-contradictory, and its system of axioms is independent. Bibl.4.

**Dynamic analysis
of deployment of large-sized space reflector and determination of force factors
that act during this process.** **Sarchimelia A. **”Problems of
Applied Mechanics”. Tbilisi, 2000, ¹1, p.93-96 (rus.).

The paper is composed dynamic finite - element model of deployment of large-sized space reflector and are determined the force factors that act during this process. The author notes the differential equations describing movement of knots of a construction during all development and subtraction schemes for them. For a solution of these equations the program in language “Delphi” is composed and the control account by computer is conducted in case of ideal disclosure and in case of two petals hooking one another. Ill.6. bibl.4.

**Definition of the
critical dependence between tensing forces of the radial sheets and ropes in the
deployable two-layer reflector.** **Tserodze Sh**. ”Problems of
Applied Mechanics”. Tbilisi, 2000, ¹1, p.97-100 (rus.).

The paper is investigated theoretically the stableness of form-creating structure of the construction of space-based transformable radiotelescope. Its stableness depends on formation of the corresponding mathematical model for this radiotelescope and on imitation of the real processes at this model. We have considered the problem of plane-form stableness loss for the radial sheet of antenna that is the thin-walled rod stretched beforehand, under the conditions of radial ropes tensing in advance with a certain critical force. We have obtained the critical dependence between tensing forces of the radial sheets P and of the ropes N. Ill.5, bibl.3.

**Models of
functions of Agricultural Machines and their Technological Processes.**
**Aliev K. **”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1,
p.101-103 (rus.).

By the methods of statistical dynamics if is founded the solid regims of works of tillable aggregates. Optimal operational parameters are established. Ill.2, bibl.3.

About the determination of Vertikal Power of Pressure of Soil
on the Spherical Disc.**Mamedov F.** ”Problems of Applied Mechanics”.
Tbilisi, 2000, ¹1, p.104-108(rus.).

By the analytic methods it is given the calculated formula of vertical component reaction of resistance of light, medial and heavy soils. Ill.4.

**About the
determination of Linear Speed of Spherical Disc for Different Heaviness of
Soils.** **Mamedov F. **”Problems of Applied Mechanics”. Tbilisi,
2000, ¹1, p.109-112 (rus.).

By the analytic methods it is given the calculated formula of optimal implication of linear speed of spherical disc for different physical-mechanical qualities of soils. Ill.2.

**The research of
the mechanical parameters of new hard alloies obtained by selfspreading high
temperatured synthesis.** **Losaberidze A., Khvadagiani A.,**
Demetrashvili V. ”Problems of Applied Mechanics”. Tbilisi, 2000, ¹1,
p.113-115 (rus.).

Mechanical parameters of hard alloys obtained on the base of titanium deborid where Cu and Ni are used as astringent steel have been studied. The dependence of strength and hardness characteristics on the content of the connecting metals in hard alloy has been studied. Ill.4, bibl.2.