华中科技大学学报（自然科学版）2013，Vol.41Issue(8)：74-78,5.
滚珠丝杠模态试验及其有限元法动力学建模
Modal test and dynamic modeling of ball screw using finite element method
摘要
Abstract
From the effective modeling guidelines,the types and sizes of finite element unit of screw shaft and nut were selected.A beam element with different masses and stiffness matrix parameters were used in the threaded portion of the screw shaft model to simulate the loss of stiffness of the shaft caused by the thread.The model was compared with the multi-grid model divided by finite element software to prove the accuracy of the model.Based on the discretization of substructure,a reasonable screw-nut joint model was illustrated,and identify the joint parameters by the frequency response function method.The modal test result of ball screw with nut on different position was compared with the corresponding finite element model.Result shows that the errors are less than 4 ％,demonstrating the effectiveness of the model.关键词
滚珠丝杠/结合部/动力学建模/有限元法/有效模型原则Key words
ball screw / joint / dynamic modeling/ finite element method / effective modeling guidelines分类
机械制造引用本文复制引用
李斌,涂智萌,毛宽民,余训星..滚珠丝杠模态试验及其有限元法动力学建模[J].华中科技大学学报（自然科学版）,2013,41(8):74-78,5.基金项目
国家科技支撑计划资助项目(2012BAF08B01) （2012BAF08B01）
国家重点基础研究发展计划资助项目(2011CB706803). （2011CB706803）
