The dependence of cylindrical resonator natural frequencies on the fluid density

The article examines the dependence of cylindrical resonator natural frequencies (sensitive element) on the density (mass) of different fluids flowing through it. The cylindrical resonators are being widely applied in automatic control systems of technological processes as oscillating transducer density meter. The article presents the experimental results that prove the dependence of natural frequencies and vibration amplitude on the fluid density

PROBIVANIE STROITEL'NYKh KONSTRUKTsIYRAZRUShAYuShchIMSYa LETYaShchIM TELOM

Analysis of joint motion of building structure and crashing missile impacting it is described. The missiles of this kind may be generated by various natural and man induced events. Equations of motion are derived. Example of their application to the problem of successive perforation of several walls by crushing missile is given. It demonstrates that the methodology permits to take into account more accurately distribution of the missile kinetic energy between itself crashing and impacted building structure deformation. The methodology described may be used for safety analysis of nuclear power plants, civil defense and so on structures subjected to destructible large kinetic energy missiles impacts