摘要
针对目前用实验模态数据对计算模型修正方法中所存在的问题 ,提出了一种新的修正方法 ,该方法借助于数学上的拉直运算 ,把需修正的变量提出来直接对其进行修正运算 ,这样不仅保证了矩阵带状稀疏的特点 ,而且计算量也减少。最后给出了计算实例。算例表明该方法具有较高的修正精度。
There exist some shortcomings when experimental modes data are used to update the calculating model. A new updating method by the name of straightened algorithm is presented in the paper. With the new algorithm all the variables to be modified can be found out and then they are updated directly. The sparse characteristic of the matrix is preserved and the whole calculating time is reduced by the new algorithm. A numerical example is provided to show the high precision of the method.
出处
《振动工程学报》
EI
CSCD
北大核心
2001年第2期245-248,共4页
Journal of Vibration Engineering
