摘要
本文根据 Reissner 夹层板理论,采用四结点和八结点等参元,建立了考虑夹心阻尼时夹层板复单元刚度矩阵和考虑转动惯量时对角质量矩阵。并用解复数特征值的方法求出了夹层板的固有频率、损耗因子和振型。计算及实验结果表明,本文编制的有限元程序对于夹层板的自由振动问题具有较好的实用价值。
On the basic of Reissner sandwich plate theory,this paper sets up the considering complex stiffness matrix for the damping of core material and diagonal mass matrix of sandwich plate by means of the 4-node and 8-node isoparametric elements.The resonant frequencies,loss factors and vibration models of sandwich plate areobtained by the Solution of the complex eigenvalue problem.The numerical example and the result of experiment indicate that the computer program used in this paper is very valuable in free vibration of sandwich plate.
出处
《电子科技大学学报》
EI
CAS
CSCD
北大核心
1989年第4期348-355,共8页
Journal of University of Electronic Science and Technology of China
关键词
夹层板
有限元
动力分析
finite element method of sandwich plate
resonant frequencies
loss factors
vibration models
