基于遗传算法的汽车拉式离合器膜片弹簧结构参数优化设计  

作　　者：何新[1] 田金鑫[1] 湖泊 

机构地区：[1]长安大学汽车学院,陕西西安710064

出　　处：《汽车实用技术》2011年第5期13-16,共4页Automobile Applied Technology

摘　　要：膜片弹簧是膜片弹簧离合器的关键零件。本文通过分析离合器的载荷—变形特性和多种约束条件,在参考成熟离合器结构参数的基础上,提出了一种离合器膜片弹簧的优化设计模型:在摩擦片磨损极限范围内,把弹簧压紧力变化的平均值最小作为优化目标。并采用遗传算法对某轻型货车离合器膜片弹簧进行优化设计计算。结果表明,应用此模型优化后的膜片弹簧各决策变量的值明显优于利用传统经验公式设计所得的结果。无论是在后备系数的稳定性、膜片的最大当量应力方面,还是在分离力的大小方面,均明显优于原设计。The diaphragm spring, a key clutch part, secures a crucial role in a clutch. With the characteristics of loading-deflection analyzed in details and all constrain conditions considered, mathematics model is established, which was based on the reference of mature clutch＇s structure. The model tries to minimize average compress force changing of the spring within the range of the friction slice wear. The genetic algorithm is then introduced to get global optimum solution. Results show that property of the optimized diaphragm spring is remarkably better than that of the original one in respect of stability of reservation coefficient, maximum equivalent stress and magnitude of declutching force.

关 键 词：离合器 膜片弹簧 遗传算法 优化设计 

分 类 号：U463.211[机械工程—车辆工程]