金属橡胶减振器准静态加载力学性能

彭云强; 贾东; 钟卫洲; 韦利明

doi:10.13224/j.cnki.jasp.20220225

金属橡胶减振器准静态加载力学性能

doi: 10.13224/j.cnki.jasp.20220225

彭云强^1,,
贾东¹,
钟卫洲^{1, 2},
韦利明^1,*, ,

1.
中国工程物理研究院总体工程研究所，四川绵阳 621999
2.
工程材料与结构冲击振动四川省重点实验室，四川绵阳 621999

基金项目: 国家自然科学基金（12172344）

详细信息

作者简介:
彭云强（1990-），男，助理研究员，博士生，主要从事疲劳与断裂的理论、数值仿真与试验研究

通讯作者:
韦利明（1980-），男，副研究员，博士生，主要从事复合材料的宏-细-微观力学行为分析。 E-mail：401weilm@caep.cn

中图分类号: V231.9
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出版历程
- 收稿日期: 2022-04-19
- 网络出版日期: 2023-06-15

Quasi-static mechanical property of metal rubber vibration absorber

PENG Yunqiang^1
,,
JIA Dong¹,
ZHONG Weizhou^{1, 2},
WEI Liming^{1,*
, ,}

1.
Institute of Systems Engineering，China Academy of Engineering Physics，Mianyang Sichuan 621999，China
2.
Shock and Vibration of Engineering Materials and Structures Key Laboratory of Sichuan Province，Mianyang Sichuan 621999，China

摘要

摘要:
基于金属橡胶减振器实际服役场景，设计了金属橡胶减振器横向和轴向准静态加载夹具，获取了5种型号共175个金属减振器横向和轴向准静态力学性能数据。借助数据分析软件对试验数据进行高阶多项式拟合，成功确定了5种金属橡胶减振器的横向和轴向载荷-位移曲线平均值和性能边界。结果表明：减振器横向和轴向载荷-位移曲线分散性并不服从常见的高斯概率分布规律，且难以同时兼顾，轴向加载时MR2型减振器分散性最小，MR3型减振器分散性最大，而横向加载时MR3分散性最小，MR2分散性最大。相关性能边界可为金属橡胶减振器的选型和安全性、可靠性评定提供重要支撑。基于μCT三维断层扫描分析设备，亦建立了金属减振器中金属丝组件的三维编织形貌，并成功确定了不同高度区域金属丝体积。
- 金属橡胶减振器 /
- 准静态试验 /
- 性能边界 /
- 可靠性评定 /
- 三维形貌
Abstract:
Based on the actual service environment of metal rubber vibration absorber, the transverse and axial quasi-static loading fixtures of vibration absorbers were designed. The corresponding quasi-static mechanical properties of 175 metal shock absorbers, which can be divided into 5 kinds of types, were successfully obtained. Furthermore, the experimental data were fitted with high order polynomial on the basis of commercial software. The average values and performance boundaries of transverse and axial load-displacement curves for the 5 kinds of metal rubber vibration absorbers were successfully determined. The results showed that the dispersions of transverse and axial load-displacement curves of vi-bration absorbers did not obey the common law of Gaussian probability distribution, making difficult to be taken into account at the same time. The dispersion of MR2 was the minimum and MR3 was the maximum under axial loading, but the dispersion of MR3 was the minimum and MR2 the maximum under transverse loading. The corresponding per-formance boundaries can provide important support for the model selection and safety assessment of metal rubber vibra-tion absorber. According to the three-dimensional computed tomography analytical device of μCT, the three-dimensional morphology of metal wire component contained in the metal rubber vibration absorber was established. Furthermore, the volume of metal wire in different height regions were determined successfully.
- metal rubber vibration absorber /
- quasi-static experiment /
- performance boundary /
- safety assessment /
- three-dimensional morphology

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图 1 金属减振器实物照片

Figure 1. Picture of true metal rubber vibration absorber

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图 2 金属减振器轴向静态加载试验照片

Figure 2. Picture of metal rubber vibration absorber with axial quasi-static loading

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图 3 金属隔振器横向静态加载试验照片

Figure 3. Picture of metal rubber vibration absorber with transverse quasi-static loading

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图 4 MR1型1#试样3次加载曲线对比

Figure 4. Comparisons of the three times loading curves of MR1-1# specimen

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图 5 MR1型减振器获取轴向加载稳定P-h曲线

Figure 5. Stable P-h curves of MR1 metal rubber vibration absorber with axial loading

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图 6 MR2型减振器获取轴向加载稳定P-h曲线

Figure 6. Stable P-h curves of MR2 metal rubber vibration absorber with axial loading

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图 7 MR3型减振器获取轴向加载稳定P-h曲线

Figure 7. Stable P-h curves of MR3 metal rubber vibration absorber with axial loading

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图 8 MR4型减振器获取轴向加载稳定P-h曲线

Figure 8. Stable P-h curves of MR4 metal rubber vibration absorber with axial loading

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图 9 MR5型减振器获取轴向加载稳定P-h曲线

Figure 9. Stable P-h curves of MR5 metal rubber vibration absorber with axial loading

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图 10 多型减振器获取轴向加载稳定P-h曲线平均值

Figure 10. Average results of stable P-h curves for five kinds of metal rubber vibration absorbers with axial loading

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图 11 多型减振器获取轴向加载稳定P-h曲线边界

Figure 11. Boundaries of stable P-h curves for five kinds of metal rubber vibration absorbers with axial loading

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图 12 MR1型减振器获取横向加载稳定P-h曲线

Figure 12. Stable P-h curves of MR1 metal rubber vibration absorber with transverse loading

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图 13 MR2型减振器获取横向加载稳定P-h曲线

Figure 13. Stable P-h curves of MR2 metal rubber vibration absorber with transverse loading

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图 14 MR3型减振器获取横向加载稳定P-h曲线

Figure 14. Stable P-h curves of MR3 metal rubber vibration absorber with transverse loading

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图 15 MR4型减振器获取横向加载稳定P-h曲线

Figure 15. Stable P-h curves of MR4 metal rubber vibration absorber with transverse loading

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图 16 MR5型减振器获取横向加载稳定P-h曲线

Figure 16. Stable P-h curves of MR5 metal rubber vibration absorber with transverse loading

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图 17 多型减振器获取横向加载稳定P-h曲线平均值

Figure 17. Average results of stable P-h curves for five kinds of metal rubber vibration absorbers with transverse loading

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图 18 多型减振器获取横向加载稳定P-h曲线边界

Figure 18. Boundaries of stable P-h curves for five kinds of metal rubber vibration absorbers with transverse loading

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图 19 MR1型1#减振器新鲜试验件三维扫描照片

Figure 19. Three-dimensional scanning pictures of new specimen of MR1-1#

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图 20 MR1型2#减振器新鲜试验件三维扫描照片

Figure 20. Three-dimensional scanning pictures of new specimen of MR1-2#

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表 1 金属减振器不同高度区域的金属丝体积

Table 1. Volume contents of metal wire for different height zones of metal rubber vibration absorbers

试样编号	体积/mm³				平均体积/ mm³	最大体积偏差 [（V_max−V_min）/ V_min]/%
试样编号	H=1～2 mm	H=2～3 mm	H=3～4 mm	H=4～5 mm	平均体积/ mm³	最大体积偏差 [（V_max−V_min）/ V_min]/%
MR1-1#	30.43	32.64	30.56	26.98	30.15	20.98
MR1-2#	27.83	33.55	32.00	27.95	30.33	20.57
注：V_max和V_min分别表示金属丝的最大体积和最小体积。

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