混合陶瓷球轴承多目标优化  

Multi-objective optimization of hybrid ceramic ball bearing

作　　者：喻炜[1] 任成祖[1] 王程[1] 

机构地区：[1]天津大学教育部先进陶瓷与加工技术重点实验室,天津300072

出　　处：《机械设计》2012年第3期56-61,共6页Journal of Machine Design

基　　金：国家自然科学基金资助项目(50975198)

摘　　要：混合陶瓷球轴承(Hybrid Ceramic Ball Bearing,HCBB)用Si3N4陶瓷球替换钢球,这两种材料性能差距较大,导致轴承寿命和发热量发生显著变化,需对HCBB进行多目标优化设计。提出高速HCBB多目标优化模型,目标函数为疲劳寿命和直接表征发热的自旋摩擦功率。用Ioannides-Harris理论计算HCBB寿命,用非劣排序遗传算法-II求解该多目标优化问题。结果显示优化的HCBB显著优于当前设计。A Hybrid Ceramic Ball Bearing （HCBB） utilizes Si3N4 ceramic bails instead of steel balls. The fatigue life and heat generation of the HCBB is greatly varied due to the property differ- ence between these two kinds of materials. Thus, the HCBB needs to be designed with multi-objectives optimization. A high speedHCBB multi-objectives optimization model was proposed by taking objective function as the fatigue life and spin friction power that di- rectly reflects the heat generation. The fatigue life of the HCBB is calculated by applying the Ioannides-Harris theory. The multi-ob- jectives optimization problem is solved by the non-dominated sorting genetic algorithm-Ⅱ （NSGA-Ⅱ）. The results show that the design optimized HCBB is notably better than that of current design.

关 键 词：混合陶瓷球轴承 多目标优化 疲劳寿命 

分 类 号：TH133.334[机械工程—机械制造及自动化]