内管外腔型超磁致伸缩致动器传热分析

陈清华; 林汉毅; 许斌

doi:10.13433/j.cnki.1003-8728.20200372

内管外腔型超磁致伸缩致动器传热分析

doi: 10.13433/j.cnki.1003-8728.20200372

陈清华^{1, 2,},
林汉毅²,
许斌²

1.
安徽理工大学省部共建深部煤矿采动响应与灾害防控国家重点实验室，安徽淮南　232001
2.
安徽理工大学矿山智能装备与技术安徽省重点实验室，安徽淮南　232001

详细信息

作者简介:
陈清华（1978−），教授，博士，研究方向为机械智能控制与结构设计和传热传质学，hnlinhanyi@163.com

中图分类号: TK124
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- 文章访问数: 61
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- 被引次数: 0
出版历程
- 收稿日期: 2020-09-04
- 刊出日期: 2022-03-05

Heat Transfer Analysis of Giant Magnetostrictive Actuator with Inner Tube and Outer Cavity

CHEN Qinghua^{1, 2
,},
LIN Hanyi²,
XU Bin²

1.
State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Anhui University of Science and Technology, Huainan 232001, Anhui, China
2.
Anhui Key Laboratory of Mine Intelligent Equipment and Technology, Anhui University of Science and Technology, Huainan 232001, Anhui, China

摘要

摘要: 为了降低温升对超磁致伸缩致动器工作性能的影响，提出了一种采用内管外腔式的超磁致伸缩致动器水冷结构。基于热阻定律建立其传热模型，分析了影响超磁致伸缩材料棒温度的因素，对超磁致伸缩致动器稳态时的温度进行了仿真分析。结果表明，虽然超磁致伸缩致动器的温度随着电流强度的增大而升高，但是采用强制水冷可以有效地控制温升，且温升随着冷却水入口流速的增大而减小，当冷却水入口流速为3 m/s时，超磁致伸缩材料棒的热变形量不大于0.09 μm。
- 超磁致伸缩致动器 /
- 热阻定律 /
- 仿真分析 /
- 热变形
Abstract: In order to reduce the influence of temperature rise on the performance of the giant magnetostrictive actuator (GMA), a water-cooled system structure of the giant magnetostrictive actuator with inner tube and outer cavity was proposed and designed in this paper. The heat transfer model of GMA with water-cooled system was established based on the thermal resistance law, and the factors influencing the temperature of the giant magnetostrictive material rod were analyzed, and the steady state temperature field of the giant magnetostrictive actuator is simulated and analyzed. The results show that although the temperature of the giant magnetostrictive actuator will increase with the increase of current intensity, the use of forced water cooling system can effectively control the temperature rise, and the temperature rise decreases with the increase of the cooling water inlet flow rate. When the inlet velocity of cooling water is 3 m/s, the thermal deformation of the giant magnetostrictive material rod is no more than 0.09 μm.
- giant magnetostrictive actuator /
- thermal resistance law /
- simulated /
- thermal deformation

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图 1 GMA结构示意图

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图 2 GMA传热模型

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图 3 GMA等效热阻模型

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图 4 GMA温度分布云图

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图 5 电流大小对GMA棒温度的影响

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图 6 冷却水流速对GMM棒温度的影响

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图 7 GMM棒轴向温度分布

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表 1 GMA结构参数表

参数	材料	轴向尺寸/ mm	径向尺寸/m
参数	材料	轴向尺寸/ mm	内径	外径
GMM棒	Terfenol-D	L_G = 50	−	8
铜管	铜	−	2	4
线圈	铜	L_C = 51	24	40
线圈骨架	尼龙	L_f = 51	16	24
冷却腔骨架	45钢	L_q = 60	40	45
套筒	45钢	L_t = 60	60	86
前、后导磁端盖	DT4	L_d = 12	−	86

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表 2 线圈电流大小与产热功率表

电流/A	1	2	3	4	5	6
功率/W	0.9	3.6	8.1	14.4	22.5	32.4

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表 3 两种入口流速下GMA温度比较表

部件	GMM棒	线圈骨架	线圈	冷却腔骨架	套筒
自然对流（1 A）	28.71	28.74	28.77	28.73	28.68
自然对流（6 A）	118.88	119.77	120.64	119.63	118.26
强制对流（1 A）	25.03	25.10	25.14	25.12	25.10
强制对流（6 A）	26.12	28.62	29.85	29.09	28.33

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