DEFINITION OF THE PERIODS OF FREE MOTION IN SKELETON-TYPE BUILDINGS BY THE METHOD OF STRAIGHT LINEARIZATION

V.HAMBARDZUMYAN, L.LEVONYAN
(Armenia)

Free nonlinear motions of a skeleton-type building have been studied, the dynamic design scheme of which appear in the form of systems with a finite numbered degree of freedom. The straight linearization method has been used. Values of nonlinear motion periods have been obtained for different real dependencies of the restoring force upon displacement.



ENERGY CONSERVATION IN SUPPLYING HEAT AND COLD TO MULTIFUNCTIONAL BUILDINGS UNDER MULTIZONE SCHEME.

S.BARAMIDZE, D.KIGURADZE, O.KIGURADZE
(Georgia)

Calculation of the energy conservation value under the conditions of heat and cold supply of multifunctional building under the multizonal scheme is conducted. The case, when heat is transported from the space where there is the access heat to the space where there is heat shortage, is reviewed. The mentioned process is achieved by using reversible heat pumps connected to the common water loop and operating in a parallel mode. Significant energy conservation (40-50%) is achieved especially in transient period (spring, winter).



PLASMA HARDENING AND RECONDITIONING OF THE WORN DETAILS

G.Gelenidze,  Т.Gochitashvili,  G.Gogia
(Georgia)

In the presented work the combined method of Plasma hardening and reconditioning is described. Method considers a preliminary zoned heating of the processing surface by a plasma torch, building-up manually with a wear resistance electrode, and further building-up of a surface again with plasma torch for burning-off and levelling of a surface. Finally, a plasma jet will make tempering a built-up layer. This technology is developed for one of the most complex case of deterioration – hydroabrasive deterioration of driving wheels of turbines and earth pumps.