双循环圆液力缓速器叶片顶弧优化设计  

Optimization Design of Blade Top Arcs of Dual Torus Hydrodynamic Retarder

作　　者：穆洪斌[1] 魏巍[1,2] 闫清东[1,2] 刘城[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]北京理工大学车辆传动国家重点实验室,北京100081

出　　处：《兵工学报》2016年第3期400-407,共8页Acta Armamentarii

基　　金：国家自然科学基金项目(51475041);车辆传动国家重点实验室基金项目(9140C35020905)

摘　　要：为提高双循环圆液力缓速器制动效能,对其弯叶片顶弧参数进行优化设计。基于叶片顶弧参数化设计方法,建立缓速器内流道计算模型。以顶弧半径与顶弧间距为设计变量,利用三维流场仿真技术进行试验设计研究,并开展制动力矩影响参数的敏感性分析。通过构建制动力矩近似模型,采用梯度优化算法进行寻优以得到优化结果。就设计参数对液力缓速器内流场流动状态与制动外特性影响开展分析,并与样机仿真以及试验数据进行对比。结果表明,优化后缓速器制动性能得到明显提高,制动力矩平均增幅可达70.8%,且叶片结构满足强度要求。In order to improve the braking efficiency of dual torus hydrodynamic retarder,the parameter optimization design of blade top arcs is studied. A numerical model of internal flow passage is established based on the parametric modeling method of blade top arcs. The computational fluid dynamics method is used for design of experiments with the radius and distance of blade top arcs as design variables,and the sensitivity analysis of two parameters having the effect on brake performance is made. A gradient optimization algorithm is used to get the optimum result by building an approximate model of braking torque.The influence of design parameters on internal flow field and external brake performance is analyzed,and the simulated results are compared with the experimental data. The results show that the brake performance of hydrodynamic retarder after optimization is significantly improved,the braking torque is increased by 70. 8%,and the blade structure meets the strength requirement.

关 键 词：动力机械工程 双循环圆 液力缓速器 顶弧 优化设计 

分 类 号：TP137.332[自动化与计算机技术—控制理论与控制工程]