摘要
针对传统有限元对大型旋转件进行数值模拟时网格数量多、计算精度低、应力集中难以表征等缺点,应用有限元子模型算法,对某旋转遥测盘的局部旋转强度进行了详细计算分析。在ANSYS软件中建立了基于循环对称的全局有限元模型,计算最大工作转速的应力分布情况,确定高应力区。根据全局模型结果建立高精度的子模型,进一步模拟子模型的应力分布情况,得到危险点应力,进行了强度校核,结果表明考核部位的局部强度满足设计要求。
Several key problems may occur in finite element analysis of large rotating component such as too large mesh quantity,low accuracy and improper characterization of stress concentration. Aiming at these problems,infinite sub- modeling method is employed to carry out the stress simulation of a telemetry disc. The integer finite element model is established in ANSYS based on cyclic symmetry. The stress distribution of the carrier is carried out under maximum rotating velocity,from which the high stress regions are made certain. Then the sub- model of these regions are built and analyzed.The dangerous points of the carrier are obtained and strength checking is processed. The methodology may provide reference to the strength simulation and check of large rotating component.
出处
《现代机械》
2015年第6期69-72,共4页
Modern Machinery
关键词
子模型算法
局部强度
有限元
遥测盘
强度校核
sub-modeling
local strength
finite element method
telemetry disc
strength checking
