减振滑靴非线性动态特性数值分析

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摘要针对以降低火箭橇系统在轨振动为目的设计的减振滑靴，对其动态特性进行了数值分析。通过平面压缩试验及经验公式确定了减振滑靴减振层天然橡胶的本构参数，进而由有限元模型获得其非线性刚度，据此建立了减振滑靴非线性动力学模型对其求解并进行了试验验证。数值计算结果表明：减振滑靴相较于传统滑靴有着较好减振能力，其减振效率随其载荷提高而提高，但由于引入橡胶使得其在大载荷及高过载条件下易出现‘跳跃’现象。根据‘跳跃’现象确定了减振滑靴工作边界，典型工况下在1Ma（350m/s）速度下每枚减振滑靴载荷应小于311kg，在2Ma（700m/s）载荷则应低于181kg。

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	赵项伟
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	解珍珍

关键词 ：减振滑靴, 振动, 非线性, 动态特性, 跳跃

Abstract：In order to reduce the vibration of rocket sled motion on track, the damping slipper was designed, and the dynamic characteristics of that was numerically analyzed. Firstly, the constitutive parameters of natural rubber in the damping layer of damping slipper are determined by plane compression test and empirical formula, then it’s nonlinear stiffness was obtained from the finite element model, secondly, the nonlinear dynamic model of damping slipper was established, solved and verified by experiments, the calculation results show that: the damping slipper has better damping capacity than the traditional slipper, and it’s damping capacity increase with the increase of load, but the introduction of rubber makes it appear ‘jump’ under the condition of large load and high overload, according to this phenomenon, the working boundary of the damper slipper is determined, in the typical working conditions, the load of each damping slipper should be less than 311kg at 1 Ma and Less than 181kg at 2 Ma.

Key words： damping slipper vibration nonlinear dynamic characteristics jump

收稿日期: 2021-11-15 出版日期: 2023-03-28

引用本文:

赵项伟，付良，杨珍，张晨辉，杨阳，解珍珍. 减振滑靴非线性动态特性数值分析[J]. 振动与冲击, 2023, 42(6): 307-312.
ZHAO Xiangwei， FU Liang， YANG Zhen， ZHANG Chenhui， YANG Yang， XIE Zhenzhen. Numerical analysis on the nonlinear dynamic characteristics of a damping slipper. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(6): 307-312.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2023/V42/I6/307

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