Thermal network model of rotary eddy current braking system for transient thermal process analysis

IF 1.5 4区 工程技术 Q3 ENGINEERING, MECHANICAL
Chunjun Chen, Jia Hu, Ji Deng
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引用次数: 0

Abstract

The system parameters of the braking process of a rotary eddy current brake (RECB) exhibit time-varying characteristics and alternate transformations of the heat source (HS) and non-heat source (NHS) regions of the brake disc. A full-structure equivalent thermal network model for the RECB system is established, considering its physical structure. In addition, a calculation method is proposed to update the temperature of the rotating unit with a finite stepping distance. The method employs the transient process of electromagnetic thermal coupling on the brake disc, distinguishes between the thermal processes in the HS and NHS regions of the brake disc, and simulates the temperature distribution of the entire braking system. The proposed calculation method is verified via rig tests, and the effects of brake temperature rise on braking performance are assessed. The method can be used for optimal design, heat capacity analysis, and life analysis of brakes.

用于瞬态热过程分析的旋转涡流制动系统热网络模型
旋转涡流制动器(RECB)制动过程的系统参数呈现时变特性,制动盘的热源(HS)和非热源(NHS)区域交替转换。考虑到 RECB 系统的物理结构,为其建立了全结构等效热网络模型。此外,还提出了一种以有限步距更新旋转单元温度的计算方法。该方法采用了制动盘上电磁热耦合的瞬态过程,区分了制动盘上 HS 和 NHS 区域的热过程,并模拟了整个制动系统的温度分布。所提出的计算方法通过试验验证,并评估了制动温升对制动性能的影响。该方法可用于制动器的优化设计、热容量分析和寿命分析。
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来源期刊
Journal of Mechanical Science and Technology
Journal of Mechanical Science and Technology 工程技术-工程:机械
CiteScore
2.90
自引率
6.20%
发文量
517
审稿时长
7.7 months
期刊介绍: The aim of the Journal of Mechanical Science and Technology is to provide an international forum for the publication and dissemination of original work that contributes to the understanding of the main and related disciplines of mechanical engineering, either empirical or theoretical. The Journal covers the whole spectrum of mechanical engineering, which includes, but is not limited to, Materials and Design Engineering, Production Engineering and Fusion Technology, Dynamics, Vibration and Control, Thermal Engineering and Fluids Engineering. Manuscripts may fall into several categories including full articles, solicited reviews or commentary, and unsolicited reviews or commentary related to the core of mechanical engineering.
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