Abstract:In order to limit the displacement of the vibration isolation system to exceed the allowable range when subjected to a shock load, displacement restrictors are usually installed in the vibration isolation system. Taking the double-deck vibration isolation system with displacement restrictors as the research object, the method of coordinate translation is proposed. A new coordinate system is established with the virtual equilibrium points of different stiffness sections as the origin, and the linear equation is established in sections. The modal superposition method is used to analyze the shock equation, and then MATLAB simulation is used to analyze the influence of the displacement restrictor parameters on the shock response of the double-deck vibration isolation system, and compare it with the single-deck system. The research results show that the linear equation established by the coordinate translation method has a standard form and can be solved directly by the modal superposition method; the influence law of the displacement restrictor parameters on the shock response of the double-deck vibration isolation system is obtained to provide a reference for the design of the displacement restrictor.
Key words: displacement restrictor; piecewise linear; shock response; double-deck vibration isolation system; mode superposition method
贾国辉1,孙自强1,张磊2,闫明1. 带限位双层隔离系统冲击响应计算方法研究[J]. 振动与冲击, 2022, 41(13): 259-264.
JIA Guohui1, SUN Ziqiang1, ZHANG Lei2, YAN Ming1. Calculation method for impact response of double-layer isolation system with displacement limiters. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(13): 259-264.
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