Реферат: The paper presents a method for designing the vibration protection systems with composite elastic elements of sign-changing stiffness. The elements may reveal, depending on the buckling stage, the quasi-zero or negative stiffness in large. The magnitude of postbucking is comparable with the size of the elements, however in retaining the long-term strength. The method is based on consistent theory of the shells. The fundamental equations of the method are applicable for designing the elements made of any elastic materials. However, it is shown, the elements from spring steels do not meet the requirements for the postbucking in large at a given strength. The need is predicted for the composites with mechanical characteristics that would substantially exceed the data of spring steels. In the context of prediction, an approach and results of computer modeling of high-strength composites under postbuckling in large are presented. The finite element analysis of the deformations, displacements, and the stress fields for various types of elastic elements are performed. Comparative results of experimental study of the models of vibration isolation mechanisms with elastic elements of negative and quasi-zero stiffness in large made of spring steels and composites based on the carbon fibers illustrate the validation of the method. The experiments were also performed for designing new composites based on the injection polyurethanes with various reinforcing, in expecting to exceed the level of the characteristics of carbon fibers. The use of the method can significantly increase the efficiency and scope of applications of the mechanisms for protection of humans and next-generation engineering, such as the multipurpose helicopters, long-distance high-speed railroad systems, and future colliders against the most dangerous infra- and low-frequency vibrations. © Advances in Acoustics, Noise and Vibration - 2021 Proceedings of the 27th International Congress on Sound and Vibration, ICSV 2021. All rights reserved.

Библиографическая ссылка: Lee C.-M. , Goverdovskiy V. , Prokhorov A. , Larichkin A. , Antokhin E.
Method for designing the vibration protection systems with negative and quasi-zero stiffness in large
В сборнике 27th International Congress on Sound and Vibration, ICCSV 2021.. – Silesian University Press., 2021. – ISBN 978-83-7880-799-5. Scopus РИНЦ

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Scopus:	2-s2.0-85117481086
РИНЦ:	47517473

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