structural perturbation

The robust stability of time _ lag systems with structural perturbation is investigated.

研究结构摄动的滞后系统的鲁棒稳定性.

Considering structural materials' randomness and using perturbation stochastic finite element method to research it, isolated and repeated eigenvalues in structures will be analyzed. Then the computational expressions of numerical characters about structural modes are developed.

考虑结构材料的随机性，应用摄动随机有限元法对结构孤立特征值和重特征值问题进行分析，推导出特征值和特征向量的统计特征的数值表达式。

Application of Perturbation Approach to the Inverse Problem of Local Structural Modification

摄动法在局部结构动力修改逆问题中的应用研究

The Mode Superposition Method with the Second Order Matrix Perturbation Technique for Structural Dynamic Analysis

结构动力分析的二阶矩阵扰动振型叠加法

Compared with perturbation stochastic component method, results of recursive combining with component method to random eigenvalue problems of large-scale and complicated structural systems involving random variables of large fluctuation levels can better approximate those of Monte-Carlo simulation.

对于在较宽随机涨落范围内大型复杂结构的随机特征值问题，相对于摄动随机子结构方法而言，递推子结构结合法的结果能够更好地逼近蒙特卡罗模拟解。