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。
A subspace perturbation method for structural dynamic modification of several groups of coupled-modes vibration systems is studied.
本文研究了多组耦合模态结构动力学参数修改的子空间摄动法。
A systematic approach of structural optimization for improving dynamic ice-structure interaction is presented in this paper on the basis of matrix perturbation and dynamic substructure techniques.
基于矩阵摄动和动力子结构方法，系统地建立了改善冰与结构动力相互作用的结构布置优化方法。
A united solution procedure for eigenvalue perturbation problem in structural vibration analysis of continuous systems is proposed with the aid of operator operation.
将离散系统振动分析中的通用的矩阵摄动法推广到连续系统。 采用弹性结构理论算子，对连续系统的振动特征值摄动问题进行统一描述。
The ordinary matrix perturbation method fails to deal with the structural system of repeated or closed frequency modes.
当系统具有重频或近频耦合模态时，常规的矩阵摄动法失效。
The modal superposition method is often used for computing the Perturbation of eigenvectors in the modification for structural and correCtion for model.
模态展开法是计算特征向量摄动量的常用方法之一，但当高阶模态被截断时。
The perturbation-based stochastic finite element analysis incorporating structural optimization techniques is employed in the structural robust design problem.
研究了考虑参数随机性的结构静动态特性稳健性优化设计问题的数学模型和数值求解。
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。
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。
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