稀土超磁致伸缩换能器等效热网络建模研究

doi:10.19595/j.cnki.1000-6753.tces.211326

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Abstract The working characteristics of giant magnetostrictive transducers (GMT) are closely related to temperature. Fast and accurate calculation and prediction of transducer temperature distribution is the key to transducer design. With the advantages of low calculation cost and high accuracy, thermal network modeling has been developed for GMT thermal analysis. However, most studies focus on steady-state modeling, ignoring the obvious temperature gradient of giant magnetostrictive rod caused by the poor thermal conductivity in the thermal transient. Therefore, this paper established a transient equivalent thermal network model of the GMT, considering the distinctiveness of the giant magnetostrictive rod as a heat source and the influence of the spatial distribution of the rod temperature. Firstly, based on the structure and working principle of the transducer, the thermal analysis was carried out. Then, the giant magnetostrictive rod was modeled. According to the internal heat transfer process of the GMT, a complete transient thermal network model was established and the model parameters were calculated. Finally, the finite element simulation model and the experimental platform of a GMT were built, and the effectiveness and accuracy of the proposed model were verified.

Key words： Giant magnetostrictive transducer equivalent thermal network model parameter calculation finite element model temperature distribution

Received: 23 August 2021

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TN712+.2

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	Zhang Zhihe
	Yang Xin
	Chen Yukai

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Zhang Zhihe,Yang Xin,Chen Yukai. Research on Equivalent Thermal Network Modeling for Rare-Earth Giant Magnetostrictive Transducer[J]. Transactions of China Electrotechnical Society, 2022, 37(14): 3464-3474.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211326 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I14/3464

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