The calculation diagrams of oscillating systems and operation features of vibratory finishing machines are considered. The mathematical models of three-mass and four-mass oscillating systems are presented. The amplitude values of the oscillating masses displacements are derived. The functions of inertial and stiffness parameters optimization are formed. The optimization problems are solved with a help of MathCAD software.
The operation of hopper devices, which are used in industry, civil engineering, agriculture and transport, is analyzed on the article. The external factors, which influence the process of charging, storing and discharging of loose cargo (freights) from hopper tanks, are overviewed. The subject of research of presented paper is the improvement of mechanisms of fracturing of products hangs-up (bridges) in hoppers at the stage of designing and setting up of hopper devices.
In last time new methods and hardware-software system, which combine eastern medicine traditions and western technologies are commonly used in diagnostic practice. Pulse diagnostics is one of the ancient methods for disease state identification. For diagnostic purposes different kind of arteries zones can be observed, but most popular is pulse diagnostics of wrist joints radial arteries. It is based on recording of signal from three zones, lied closely along the radial arteries of left and right hands. For the purpose of pulse diagnostics special kinds of sensing devices are used.
The active provides the results of experimental reseach abtain in investigation of the testing multi – span prestresset rein reinforced reinforced concrete bridges.
Тechnique and results of static tests of reinforced concrete without-diaphragm span structure before and after reconstruction are described.
The results are given on the basis of an experimental research on firmness and deformability of normal sections of concrete beams reinforced with frameless reinforcement and rod reinforcement class A400C without prestressing. These experiments and comparing them with calculations according to current regulations give an opportunity to assess the convergence of the results and draw conclusions about the possibility of rational design of ceramic block bending elements with double reinforcement in the area of the normal forces.