Experimental determination of the static characteristics of welded vibration isolators used in shipbuilding

The paper provides a justification for the need to use vibration isolators in order to increase the resource and reliability of mechanisms. The aim of the work is to obtain a refined static characteristic of vibration isolators of the AKSS type (ship-mounted welded shock absorber with insurance) in three directions, which is necessary for calculating the frequency of natural oscillations of the "unit-vibration isolator" system. The paper presents the basics of the vibration damping mechanism by viscoelastic materials, in particular rubber, used for the manufacture of a vibration isolation array. In addition, the main types of vibration isolators used in shipbuilding today are given. The paper provides a description of the loading device for removing the static characteristics of the vibration isolator and the methodology for conducting an experimental study in strict accordance with GOST 27242-87. An empirical dependence is presented for determining the static deformation of a vibration isolator in the main direction from the applied load and empirical dependences for determining the static characteristics of a vibration isolator depending on the static deformation in the main direction. The conducted experimental studies confirmed the values of the static stiffness of the vibration isolator in three mutually perpendicular directions, in accordance with GOST 17053.1-80.