Vibration isolation support for processing equipment with quasi-zero stiffness effect on the base of air spring with rubber-cord shell

摘要

The study relates to the important branch of applied mechanics - the theory of vibration isolation of vibroactive objects such as generators, motors, pumps, compressors, fans, pipelines, etc. The design and mathematic model of a prospective support structure using quasi-zero stiffness effect were considered. The support consists of a carrying diaphragm- and toroidal-shell air spring as a stiffness corrector. The latter creates a force opposite to the one of the carrying air spring and thereby generates the quasi-zero stiffness effect during fluctuations of vibration-isolated object. The mathematical model of the support, allowing to select options to reduce the factor of the force transmission to the foundation in a certain frequency range was obtained. The resulting model calculations and graphs showed the vibration isolation effectiveness of the proposed support, especially for high mass and low frequencies objects.