某动力机器基础动力学分析  

Dynamic Analysis of a Dynamic Machine Foundation

作　　者：孔垂烛[1] 薛尚铃[1] 尹菊丽 

机构地区：[1]中冶赛迪工程技术股份有限公司,重庆400013 [2]重庆博建建筑设计有限公司,重庆400015

出　　处：《岩土工程技术》2007年第5期254-256,共3页Geotechnical Engineering Technique

摘　　要：当动力机器基础体积较大时,采用《动力机器基础设计规范》(GB 50040-96)推荐的简化计算方法进行动力计算,计算结果可能具有较大的误差而不能用于工程设计,此时进行三维数值分析是必要的。在介绍弹性动力学分析的基础上,使用通用有限元软件ANSYS8.0,对某设备基础进行了模态分析和谐相应分析,得出了该动力机器基础的低阶固有频率准确值,以及该动力机器基础随外部荷载频率改变的振幅变化曲线,进而得出一些重要结论,为该工程设计提供了可靠参考。If dynamic machine foundation is very large, the computation result of the sinplified method recommended in the Dynamic Machine Foundation Design Code（GB50040 - 96）maybe is error, and which is without avail for the engineering design. So three- dimensional numerical simulation analysis of such foundation is very necessary when we face it in the engineering design. Elasticity dynamic analysis method theory is brief introduced at the beginning of this article. Then dynalic analysis of a dynamic machine foundation has been done by the universal finite element program ANSYS8.0, including two aspects： modal analysis and harmonic response analysis. And then the natural frequency exact computation value of the dynamle frequency is also put out. Ac-cording to the above computation results, some important conclusions are drawn out, which are very useful for the design of correlative engineering.

关 键 词：动力机器基础 动力学分析 固有频率 振幅 

分 类 号：TB115[理学—数学]