车用电涡流缓速器三维有限元分析

基金项目:

江苏省科技攻关项目 BE2003-042

3-D finite element analysis of eddy current retarder

School of Automobile and Traffic Engineering, Jiangsu University, Zhenjiang 212013, China

摘要: 运用电磁位对A Φ A方法和库仑规范, 实现了三维涡流场定解问题的完整表述, 建立了1/8有限元模型; 运用四面体单元, 模拟并分析了电涡流缓速器的磁通量分布。由有限元程序求得的电涡流缓速器的制动力矩与试验测量值基本吻合, 说明该模型和计算方法是可行的。
- 汽车工程 /
- 电涡流 /
- 缓速器 /
- 三维有限元分析 /
- AΦA方法
Abstract: 3-D non-linear eddy current fields with ferromagnetic moving conductors was studied, the formulation was realized by using the A-Φ-A method in combination with the Coulomb gauge, and 1/8 finite element model was built. The resulting braking torques of procedure of eddy current retarder were compared to measurements. The results show that calculation value and test value are almost equal, the model and computation method are feasible.
- automobile engineering /
- eddy current /
- retarder /
- 3-D finite element analysis /
- A-Φ-A method

图 1 电涡流缓速器模型

Figure 1. Model of eddy current retarder

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图 2 含运动导体的电磁场

Figure 2. Electromagnetic field with moving conductor

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图 3 电涡流缓速器的网格剖分

Figure 3. Mesh of eddy current retarder

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图 4 磁通密度B的分布矢量

Figure 4. Distribution of vector B

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图 5 制动力矩计算值与测量值的对比

Figure 5. Computed braking torque compared to measurements

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