用有限条－RICCATI迁移矩阵法计算圆环板的动力响应

Dynamic Response Analysis of Circular and Annular Plate by a Combined Finite Strip-Riccati Transfer Matrix Method

用有限条法与迁移矩阵法相结合．计算圆环板的动力响应问题．与有限元法相比较可有效地减少计算机存储和提高计算精度．当条元较多时．常规迁移矩阵法的多次矩阵连乘产生舍人误差的积累．有时还会出现数值不稳定．本文改用有限条与Ｒｉｃｃａｔｉ迁移矩阵法相结合．可有效克服这个缺陷．

A combined finite strip-transfer matrix method has been applied tocalculate dynamic response of elastic circular and annular thin plate, to reduceeffectively the computer storage and to improve the accuracy comparing with thefinite element method.But in case of that the number of elements is large. theround-off errors is accumulated in recursive multiplication of the transfermatrices and lead to the possibility of numerical instability.In this paper thecombinedfinitestrip-Riccatitransfermatrixmethodinusedtoovercomethisdisadvantge.