Theoretical Studies of Stresses in a Layer of a Light-Concrete Mixture, Which is Compacted on the Shock-Vibration Machine

Abstract

The article presents the design of shock-and-vibration machine for the formation of lightweight concrete products. The results of theoretical studies of the working process of the shock-and-vibration machine with the definition of motion and stress laws in a layer of a concrete mixture compacted in the kinematic excitation of oscillations are given. In paper the dependences for determining the reduced mass and the equivalent coefficient of inelastic resistance of a concrete mixture with asymmetric kinematic excitation of oscillations during the vibration seal are given. The practical application of the obtained results is offered.Keywords: shock-and-vibration machine, light concrete mix, compaction of the concrete mixture, stress in the layer of concrete mix.

Assessment of the current state of parameters and operating modes of technological technical systems

“…Thus, studies using the above technique have established that for the processes of grinding [6,7], sorting [8], mixing [9], compaction [10,11], cavitation treatment [12][13][14], research of parameters, modes and reliability machines [15][16][17][18][19][20] there is a significant difference in the numerical values of the criteria of the studied class of technical systems. The main reason lies in the use of simplified models, the absence of modeling and consideration of the joint movement of the working bodies of the technical system and the processed medium or material.…”

Experimental studies of forming design at dynamic load

“…The analytical dependences for estimating the influence of the medium resistance at polyfrequency oscillations are ob tained. In [3], studies of a shock vibration machine for molding concrete products are given. Studies are based on the determination of the reduced mass and the equivalent coefficient of resistance of a concrete mix.…”

Theory of creation and practice of using vibrating machines for various technological purposes

“…Тобто, визначення фізичних і математичних моделей являлися основою для розрахунку конструктивних та технологічних параметрів робочого процесу. Так, в роботі [1] приводяться дослідження ударно-вібраційної машини для формування бетонних виробів. Дослідження базуються на визначенні приведеної маси і еквівалентного коефіцієнта опору бетонної суміші.…”