摘要
目前高速离心泵转子系统动态优化设计一般多限于求在自振频率禁区约束下的转 子重量最轻问题，用数学规划法或准则法求解。本文对高速离心泵转子系统进行符合 工程要求的较全面的动态优化设计，采用有限元分析手段；以动柔度为目标函数（考 虑强迫振动），考虑自振频率禁区、转子强度和刚度等约束，采用作者提出的摄动逆 求法或者将其与数学规划法相结合的方法求解。以 ＣＹ型液下泵为实例，重分析 １～２ 次。本优化方法亦可推广用于其他机械系统动态优化设计。
At present, theq uestion of minimum rotors weight is usually discussed by using a optimal method of programming or criterion in consideration of the forbidden natural frequency bands only in optimal dynamic design of high speed rotors. In this paper, a better method of optimal dynamic design is presented for designing higher rotational speed rotor-system of centrifugal pumps. Therefore, the engineering requirements are more wholly met by using this method during design. In the paper, a perturbation converse solution, author presented previously, and a method combining both programming and criterion into one have been separately used, and dynamic flexibility has been taken as minimization-function in consideration of rotor's forced vibration and forbidden natural frequency bands as well as strength and stiffness. A practical example of rotor-system dynamic optimal design has also been given under the liquid-pump CY by once or twice re-analysis. This optimalm ethod can also be developed to the other fields of mechanical engineering optimal design as well as the engineering contruction optimal design.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
1989年第3期301-307,共7页
Journal of Dalian University of Technology
关键词
离心泵
转子
优化设计
centrifugal pump
rotor
system
finite element analysis
flutter analysis
optimal designs
sensitive
regress ion/perturbation converse solution
