摘要
本文根据直梁有限元模型的特点将特征方程KX=λMX中K、M矩阵表为若干结构参数的函数,即K=K(p_1,p_2,…p_m),M=M(q_1q,q_2,…q_m).从而导出以结构参数为未知量的逆特征方程,并分析了可解的条件及结构参数对特征数据的敏感性等问题.
On the basis of the characters of finite element model of beam, the K matrix and M matrix in equation Kx=Mx are regarded as functions of some structural parameters, that is K=K(p, p,……p_m) and M=M(q, q,…,q_m) the unknown data become the structure parameters. The condition of solvtion and sensitivity of the structure parameters on the eigen data are investigated.
出处
《应用力学学报》
CAS
CSCD
北大核心
1989年第4期91-94,120,共4页
Chinese Journal of Applied Mechanics
关键词
有限元法
特征值
反问题
空速管
梁
finite element method
eigenvalue
inverse problem
air speed pitot tule
beam
