Analysis of Dynamics and Characteristics of Main Classes of Self-Oscillating Volume-Type Hydraulic Impact Systems

Abstract

A generalized mathematical model describing self-oscillating volume-type hydroimpact systems of bidirectional and monodirectional direct and back action is presented. Dimensionless variables are introduced, and the main dynamic similarity criteria having a similar physical meaning for these classes of systems are determined. The peculiarities of changes in the output characteristics of the systems (preimpact velocity of the striker, cycle time, and system efficiency) are explained in the space of the basic similarity criteria and are compared. An example of the application of research results to the selection of basic parameters of hydroimpact systems is given, and it can thus be used at a stage of preliminary design.