大型动力机器基础防微振计算理论与实测研究

Theoretical and experimental study on micro-vibration reduction of large dynamic machine foundation

基础平台防微振问题的研究对于高精密动力机器而言具有重要意义 ,本文给出了大型动力机器基础防微振计算的动力三维有限元法 ,该方法通过在大型通用有限元软件中植入等效单元 ,考虑了基础与地基的动力相互作用。通过理论计算、现场实测结果的对比研究 ,证明本文方法具有较高精度 。

Study on micro vibration of foundation plate is very important to high precision dynamic machine. Dynamic three dimensional finite element method for computation of micro vibration of large dynamic machine foundation is given in this paper. The equivalent element is constructed for considering soil structure interaction by implementing this method with common FE program. Contrast between results of theory and experiment proves accuracy of this method. Finally, some useful conclusions are given for reference.