perturbation matrix

基本解释

Damage tends to be concentrated in a few structural members at the early stage, so the stiffness perturbation matrix tend to be in small rank.
在结构损伤的早期阶段，损伤往往集中发生在少数单元，损伤前后总体刚度矩阵差的秩较小。
The purpose of this paper is to study the additive perturbation of matrix eigenvalue. Some new absolute and relative perturbation bounds of matrix are obtained.
本篇文章主要研究了矩阵特征值的扰动，并给出了一些矩阵的绝对和相对扰动边界。
The prevalent formula for nonzero perturbation matrix in the secular equation is gained by the perturbation theory in degenerate state and property of spherical harmonics function.
本文应用简并态微扰理论和球谐函数的性质，得到久期方程中非零微扰矩阵元普遍表达式。