For repeated eigenvalues, the corresponding eigenvectors are degenerate. With substructure mode synthesis technology, the first-order sensitivity of repeated eigenvalues and corresponding derivable eigenvectors are derived.
2．针对重频结构中，重特征值对应的特征向量出现退化的问题。
参考来源 - 复杂结构的动力重分析方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
利用一种新的方法来研究具随机刚度梁结构的重特征值问题。
A new random finite element method for solving repeated eigenvalues problems involving beams' structures with stochastic stiffness was proposed.
结合多项式方法和QR方法各自的特点，提出了一种计算矩阵重特征值的方法。
There are two kinds of method to calculate the eigenvalues of a matrix: characteristic polynomial method and QR method.
本文结合有限元法和摄动法给出了一个确定薄板在二重特征值处分支方向的方法。
A method of determining bifurcation directions at a double eigenvalue is presented by combining the finite element method with the perturbation method.
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