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Information × Registration Number 0222U002960, 0120U100805 , R & D reports Title Development of a complex dynamic model of a hydraulic concrete hose pump for selecting device parameters popup.stage_title Head Shatokhin Vladimir Mikhailovich, Registration Date 16-02-2022 Organization Kharkov National University of Civil Engineering and Architecture popup.description2 Object of research – dynamic processes in peristaltic concrete pumps with hydraulic drive, taking into account geometric, mass characteristics of the rotor, dynamic characteristics of the hydraulic motor, hose parameters, construction mixtures, nonlinear model of resistance forces of mixtures, which in many cases are Bingham liquid. The purpose of the work is to development universal mathematical models of dynamic processes in peristaltic concrete pumps with hydraulic drive to determine the technological qualities of devices, the choice of their rational parameters. Models should contain the basic parameters of pumps, drives, hoses, construction mixtures, due to the need to modernize existing and develop new models of peristaltic pumps. To achieve this goal it is necessary to solve the following tasks: developed a method of forming the moment of resistance on the rotor of the pump from rollers that deform the hose; created models of friction forces, including nonlinear ones, which impede the movement of the construction mixture; expression for the resistance forces due to the gravitational forces of the mixture particles in the source part of the hose; the model of the moment of the hydraulic motor as function of angular speed of its rotor is constructed; the factors generating oscillatory processes in devices and the hydraulic drive are established; developed recommendations for the choice of hydraulic motors; the calculated reseatches of regularities of dynamic processes in the concrete pump taking into account the developed universal models are given. Research methods – to study dynamic processes, it is proposed to use the differential equation of motion, written in the form of Lagrange. The angle of rotation of the pump rotor is taken as the generalized coordinate. The mathematical package MathCAD, VisSim package was used to solve the differential equations of motion of the device.   Product Description popup.authors Granko Boris F popup.nrat_date 2022-03-09 Close