Vibration Isolating and Impact Protecting Systems with Quasi-Zero Stiffness Providing Wide Operating Area
This study presents systems with quasi-zero stiffness. The interest in these systems has been constantly increasing recently. In most of the systems with quasi-zero stiffness, the force characteristic with quasi-zero stiffness is obtained due to the combination of systems with negative and systems with positive stiffness. Generally, the length of the working sections of such systems is small and less than few centimeters. The well-known systems with quasi-zero stiffness are observed, main advantages and disadvantages are discussed, and a new classification is presented. Also, this study demonstrated how to upgrade a pneumatic spring into a system with quasi-zero stiffness for increasing their vibration isolating and impact protection properties. For modifying force characteristics of standard pneumatic spring, it is offered to use a pack of Belleville springs. The advantage of such a pneumatic spring with quasi-zero stiffness is the absence of the necessity of its major modifications. Analytical calculations are made for proving such an idea.
KeywordsQuasi-zero stiffness Vibration
The reported study was funded by The Ministry of Education and Science of the Russian Federation according to the research project MK-2965.2018.8.
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