制动盘自由模态仿真与试验对比及模态置信度研究

doi:10.3976/j.issn.1002-4026.2021.06.014

Abstract

Abstract:

The finite element model of the brake disc was established and the first five elastic modes of the brake disc are obtained by simulation The modal experiment was carried out and the research on experimental parameter selection, measurement point placements and modal judgment criteria were conducted. The correctness of the experimental results was verified by the fitted frequency response function curve and the modal assurance criterion. The comparison between simulation and experiment demonstrates that the modal shapes and frequencies obtained by the simulation model coincide with the experimental results basically. The research indicates that the finite element model of the brake disc can be used to predict the vibration and noise characteristics of the brake disc under constrained conditions.

Key words: brake disc, elastic modes, modal analysis, simulation

CLC Number:

U467.4

ZHOU Chang-feng,ZHANG Jia-hao,LIU Li-bang,LIU Xin-lei,WANG Xi-bo. Modal confidence analysis and comparison of brake disc based on simulation and experiment under free conditions[J].Shandong Science, 2021, 34(6): 106-111.

Figures/Tables 9

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Table 1

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References 13

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	第一阶	第二阶	第三阶	第四阶	第五阶
振型	盘边四阶弯曲 (节径在x轴45°方向)	盘边四阶弯曲 (节径在x轴)	盘边六阶弯曲 (节径在x轴)	盘边六阶弯曲 (节径在x轴30°方向)	盘体呼吸振型 (1个节圆)
试验模态频率/Hz	1 103.5	1 128.1	2 555.0	2 559.9	2 619.4
仿真模态频率/Hz	1 129.2	1 126.9	2 619.3	2 618.8	2 624.4
误差	2.33%	-0.11%	2.52%	2.30%	0.19%
试验阻尼比	0.39%	0.22%	0.31%	0.27%	0.22%

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Modal confidence analysis and comparison of brake disc based on simulation and experiment under free conditions

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