高能光源束流位置探测器支撑架结构优化设计

王安鑫; 王梓豪; 麻惠洲; 李春华; 聂小军; 陈佳鑫; 朱东辉; 余洁冰; 贺华艳; 王广源; 于永积; 刘仁洪; 张俊嵩; 邱瑞阳; 刘磊; 康玲

doi:10.11884/HPLPB202133.200297

高能光源束流位置探测器支撑架结构优化设计

doi: 10.11884/HPLPB202133.200297

王安鑫^{1, 2,},
王梓豪¹,
麻惠洲¹,
李春华^{1, 3},
聂小军^{1, 2},
陈佳鑫^{1, 2},
朱东辉^{1, 2},
余洁冰^{1, 2},
贺华艳^{1, 2},
王广源^{1, 2},
于永积^{1, 2},
刘仁洪^{1, 2},
张俊嵩^{1, 2},
邱瑞阳^{1, 2},
刘磊^{1, 2},
康玲^{1, 2}

1.
中国科学院高能物理研究所，北京 100049
2.
散裂中子源科学中心，广东东莞 523803
3.
中国科学院大学，北京 100049

基金项目: 国家自然科学基金项目（11805220）

详细信息

作者简介:
王安鑫（1983—），男，浙江绍兴人，高级工程师，硕士，机械设计及理论专业；wanganxin@ihep.ac.cn

中图分类号: TL503
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- 文章访问数: 1139
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- 被引次数: 0
出版历程
- 收稿日期: 2020-10-29
- 修回日期: 2021-02-03
- 网络出版日期: 2021-03-09
- 刊出日期: 2021-05-02

Structural optimization design for beam position monitor support of High Energy Photon Source

Wang Anxin^{1, 2
,},
Wang Zihao¹,
Ma Huizhou¹,
Li Chunhua^{1, 3},
Nie Xiaojun^{1, 2},
Chen Jiaxin^{1, 2},
Zhu Donghui^{1, 2},
Yu Jiebing^{1, 2},
He Huayan^{1, 2},
Wang Guangyuan^{1, 2},
Yu Yongji^{1, 2},
Liu Renhong^{1, 2},
Zhang Junsong^{1, 2},
Qiu Ruiyang^{1, 2},
Liu Lei^{1, 2},
Kang Ling^{1, 2}

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
2.
Spallation Neutron Source Science Center, Dongguan 523803, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 从热稳定性和振动稳定性两个角度出发，优化设计得到了超高稳定的刚性支撑架结构；通过ANSYS有限元模态分析，验证了结构的热膨胀变化量和特征频率；采用混凝土二次灌浆方法对支撑架进行地面固定和特征频率测试，结果表明，支撑架结构的特征频率达到61.9 Hz、振动幅值小于30 nm，均满足设计要求。最后采用动态刚度测试方法，得到混凝土二次灌浆层的主要刚度值，进一步验证支撑架结构优化结果的准确性。
- 高能光源 /
- BPM支撑架 /
- 结构优化 /
- 结构稳定性 /
- 模态测试 /
- 动态刚度
Abstract: Based on thermal stability and vibration stability, an ultra stability structure of rigid support is designed and optimized. Through the finite element modal analysis of ANSYS, the thermal expansion variation and the characteristic frequency of the support is verified. The support is fixated to the ground by using the method of concrete grouting and then the characteristic frequency is tested. The test results show that the characteristic frequency of the support reaches up to 61.9 Hz and the vibration amplitude is less than 30 nm, both of which meet the design requirements. Finally, the method of dynamic stiffness testing is adopted to obtain the stiffness value of the concrete grouting, and the accuracy of the optimization results of the support is further verified.
- High Energy Photon Source /
- beam position monitor support /
- structure optimization /
- structural stability /
- modal testing /
- dynamic stiffness

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图 1 质量-刚度模型

Figure 1. Mass-stiffness model

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图 2 影响特征频率的参数曲线

Figure 2. The graph of relationship between parameters and characteristic frequency

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图 3 BPM主支撑体样机设计流程图

Figure 3. The design flow chart of BPM support prototype

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图 4 BPM支撑架样机模型

Figure 4. BPM support prototype model

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图 5 BPM支撑架垂向变化量随温度变化的曲线图

Figure 5. The curve graph of vertical variation of BPM support with temperature

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图 6 主支撑体与地面连接方式示意图

Figure 6. Schematic diagram of connection modes of BPM support

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图 7 主支撑体模态仿真结果

Figure 7. Modal simulation results of BPM support

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图 8 主支撑体模态测试

Figure 8. BPM support modal test

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图 9 模态测试结果

Figure 9. Modal test results of BPM support

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图 10 各测点频响曲线、相干曲线

Figure 10. Frequency response curve and coherence curve of each measuring point

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图 11 动态刚度测试

Figure 11. Dynamic stiffness test

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图 12 地脉动主支撑体响应测试

Figure 12. BPM support vibration response test

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图 13 主支撑体纵向振动响应曲线

Figure 13. BPM support longitudinal vibration response curves

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图 14 主支撑体横向振动响应曲线

Figure 14. BPM support transverse vibration response curves

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图 15 主支撑体特征频率与上板厚度的关系

Figure 15. The relation diagram of characteristic frequency and upper plate thickness

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图 16 主支撑体模态优化仿真结果

Figure 16. Modal simulation results of optimized BPM support

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表 1 材料参数

Table 1. Material parameters

material	coefficient of thermal expansion / ℃⁻¹	Poisson’s ratio	modulus of elasticity / GPa	density / (kg·m³)
Invar 4J32	0.63×10⁻⁶	0.23	145	8140
SUS 304	1.7×10⁻⁵	0.31	193	7750
concrete	1.4×10⁻⁵	0.18	30	2300

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表 2 主支撑体不同固定方式的仿真结果

Table 2. Simulation results of different fixed modes of BPM support

	simulation natural frequency / Hz
	1^st（longitudinal）	2^nd（lateral）
ground bolt	38.7	107.4
part grout	63.8	132.5
full grout	66.7	135.9

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表 3 主支撑体模态测试结果与仿真误差

Table 3. Modal test results and simulation error of BPM support

fixation mode	experimental natural frequency / Hz		simulation error
fixation mode	1^st （longitudinal）	2^nd （lateral）	1^st （longitudinal）	2^nd （lateral）
ground bolt	16.9	48.4	129%	122%
part grout	55.5	104	15%	27%
full grout	61.8	107	8%	27%

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表 4 测试与仿真结果

Table 4. Test and simulation results

	stiffness / N·m·rad⁻¹		simulation natural frequency / Hz		simulation error
	1^st（longitudinal）	2^nd（lateral）	1^st（longitudinal）	2^nd（lateral）	1^st（longitudinal）	2^nd（lateral）
ground bolt	2.3×10⁵	2.2×10⁶	16.8	48.5	0.6%	0.2%
part grout	9×10⁶	2.1×10⁷	55.5	103.5	0	0.5%
full grout	3.4×10⁷	2.5×10⁷	61.9	107.1	0.2%	0.1%

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表 5 主支撑体振动响应测试结果（RMS 1～100 Hz）

Table 5. BPM support vibration response test（RMS 1～100 Hz）

	measurement						simulation
	longitudinal			lateral			longitudinal			lateral
	ground/ nm	BPM support/nm	ratio	ground/ nm	BPM support/nm	ratio	ground/ nm	BPM support/nm	ratio	ground/ nm	BPM support/nm	ratio
full grout	19.5	62.8	3.22	23.7	29.4	1.24	19.5	47.6	2.44	23.7	27.3	1.15
part grout	22.6	82.49	3.65	23.3	29.6	1.27	22.6	59.4	2.63	23.3	27.3	1.17

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