Investigation of dynamic characteristics of STVR-400K spiral-cable vibration isolator

Труды Крыловского государственного научного центра

Alexander S. Golubkin¹  Mikhail A. Budnichenko²  Vladimir A. Nekrasov² 

[1] CDB ME Rubin;JSC PO Sevmash;

关键词: cross spectral analysis;    vibration isolator;    vibroacceleration;    force sensor;    dynamic force;    tests;    mechanical loss coefficient;    mechanical impedance;    servohydraulic vibrator;    static load;    frequency dependence;   

DOI  :  10.24937/2542-2324-2020-1-391-180-184

来源: DOAJ

【 摘 要 】

Object and purpose of research. This paper discusses STVR-400K spiral-cable vibration isolators. The purpose of this work is to study their dynamic characteristics under nominal static load. Materials and methods. Vibration isolators were tested on a servohydraulic testing machine of JSC PO Sevmash, which is a part of dynamic testing facilities for vibration-isolating structures. The study followed the method of mechanical impedances measurements for vibration-isolating structures under static loads. Main results. The main result of the work is derivation of empirical formulas for frequency-dependent dynamic stiffness and natural frequency of STVR-400K vibration isolator at nominal static load. Conclusion. The empirical formulas suggested in this work enable the calculation of natural frequency and other dynamic characteristics for vibration-isolating fastener consisting of STVR-400K vibration isolators taking into account frequency dependence of their dynamic stiffness.

【 授权许可】

Unknown