基于分块法的人工髋关节模态分析  

Modal Analysis for an Artificial Hip Joint Based on Block Lanczos Arithmetic

作　　者：胡迎春[1] 朱慧[2] 

机构地区：[1]广西工学院发展规划处,广西柳州545006 [2]广西工学院机械工程系,广西柳州545006

出　　处：《广西工学院学报》2011年第2期16-19,共4页Journal of Guangxi University of Technology

基　　金：2010年度广西高校优秀人才资助计划项目(桂教人〔2010〕65号);广西自然科学留学回国基金项目(2011GXNSFC018005)资助

摘　　要：在有限元软件中选用壳单元建立人工髋关节计算模型,采用分块法对其进行模态分析,得到人工髋关节的低阶模态振型相对位移云图,从云图上可观察并了解到人工髋关节振型及自振频率,为下一步研究关节活动产生的自激振动与其自振频率的关系奠定基础,也为关节固有频率在临床上对关节活动产生的影响提供参考.The computing model of an artificial hip joint was established with shell elements in Finite Element Analysis software.The modal analysis of the artificial hip joint was carried out with the way of Block Lanczos arithmetic to obtain the nephogram of a few lower mode and displacement of vibratory type.The natural frequency of the artificial hip joint could be observed and understood from nephogram,which was the foundation of the further study about the relationship between self-excited vibration and its natural frequency while in movement.It also has been proved to offer references to clinical research about the joint natural frequency＇s influence on its activities.

关 键 词：模态分析 振型 人工髋关节 分块法 

分 类 号：TB18[一般工业技术] R322.7[医药卫生—人体解剖和组织胚胎学]