弹簧式衰减器的三维UDF数值模拟分析

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摘要提出了新型弹簧式衰减器结构，以弹簧式衰减器为研究对象，针对无法定量分析衰减器衰减性能的问题，成功模拟了弹簧式衰减器中活塞的运动，克服了动网格计算中易出现的负体积问题。在不同的弹簧刚度与不同的频率条件下对弹簧式衰减器进行三维UDF数值计算，结果表明，当流体的脉动频率与衰减器的固有频率一致时，衰减效果最好，衰减率可达71%；弹簧刚度越低，衰减器的工作频带越宽。实验与仿真的结果相吻合，验证了衰减器模型的有效性和的可行性，为弹簧式衰减器衰减性能的定量分析提供了新方法和新思路。

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	辛清
	张永祥
	李加伟
	张育卿

关键词 ：弹簧式衰减器, 压力脉动, 动网格技术

Abstract：A new type of spring attenuator was proposed, and for the problem that the attenuation effect of attenuator can not be quantitatively analyzed, the spring attenuator was taken as the research object, and the movement of the piston in the spring attenuator was successfully simulated. Overcoming the problem of negative volume in the dynamic mesh calculation, the three-dimensional UDF numerical calculation was performed on the spring attenuator under different spring stiffness and different frequency conditions. The results showed that when the pulsation frequency of the fluid was consistent with the natural frequency of the attenuator, the attenuation effect was the best, and the attenuation rate could reach 71%. The lower the spring stiffness, the wider the attenuator's working band. The experiment was consistent with the simulation results, verified the validity and feasibility of the attenuator model, and provided a new method and new idea for quantitative analysis of the performance of the spring attenuator.

Key words： spring attenuator pressure pulsation dynamic mesh technology

收稿日期: 2021-02-01 出版日期: 2022-06-15

引用本文:

辛清，张永祥，李加伟,张育卿. 弹簧式衰减器的三维UDF数值模拟分析[J]. 振动与冲击, 2022, 41(11): 164-170.
XIN Qing, ZHANG Yongxiang, LI Jiawei, ZHANG Yuqing. 3-D UDF numerical simulation analysis of spring attenuator. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(11): 164-170.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I11/164

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