发电机组轴承非线性油膜力的快速算法研究  

STUDY ON A RAPID ALGORITHM FOR NONLINEAR OIL-FILM FORCES OF JOURNAL BEARINGS IN TURBO-GENERATOR UNIT

作　　者：肖忠会[1] 刘大全[1] 张文[1] 郑铁生[1] 

机构地区：[1]复旦大学力学与工程科学系,上海市虹口区200433

出　　处：《中国电机工程学报》2004年第12期144-148,共5页Proceedings of the CSEE

基　　金：国家自然科学基金重大项目(19990510)国家重点基础规划项目(01998020316)。~~

摘　　要：基于变分不等方程理论和降维方法,文中把求解发电机组滑动轴承的压力分布问题离散化为三对角阵代数互补问题的求解,并提出了针对性的快速求解方法,得到了求解滑动轴承非线性油膜力的高效算法。算例表明,与二维有限元互补算法相比,文中算法的结果在精度得到保证的前提下,运算时间可节省99％以上。Based on the theory of variational inequality and the method of dimension-reduction, this paper presents a rapid and high-efficiency algorithm to solve the nonlinear oil-film forces of journal bearings. The solution of the pressure distribution in the journal bearings is discretized to an algebraic complementary equation. Meanwhile, some effective techniques are used to save the computing time. The numerical results show that, compared with the results of a two-dimensional finite element method's algorithm, the computing time of this algorithm can be saved more than 99% under the precision guaranteed.

关 键 词：对角阵 互补问题 快速求解 变分不等方程 非线性油膜力 快速算法 算例 滑动轴承 节省 精度 

分 类 号：TM621.3[电气工程—电力系统及自动化] TH133[机械工程—机械制造及自动化]