The structural stiffness matrix is the function of frequency because that the impedance function of the pile foundation changes with its frequency.
由于桩基础的阻抗函数随频率变化，所以结构的刚度矩阵也是频率的函数。
The vibration model related to the structural stiffness matrix of two-winged fishbone-shaped model is determined with two-winged fishbone-shaped method.
与双翼鱼刺型振动模型相关的结构侧移刚度矩阵由双鱼刺法确定；
The structural performances are evaluated from the condition number (CN) of equilibrium matrix, and CN and minimum eigenvalue of stiffness matrix.
根据平衡矩阵的条件数和刚度矩阵的条件数与最小特征值，评价基本单元的结构特征。
In this paper, by using the method of matrix structural analysis, the static stiffness model are derived from researching BKX-I varied-axis NC machine tool.
文章以BKX - I型变轴数控机床为研究对象，利用矩阵结构分析法建立了变轴数控机床的静刚度计算模型。
According to the pseudo-inverse relationship between global stiffness matrix and flexibility matrix, a flexibility-based method for structural damage localization is presented.
本文利用结构柔度矩阵与刚度矩阵之间的广义逆关系，建立了一种基于柔度的结构损伤定位方法。
These types of structural surfaces are the weak part of the rock mass. Their stiffness and strength are much smaller than the rock matrix material.
这些各种类型的结构面正是岩体中的薄弱部分，它们的刚度和力学强度比岩石母体材料小得多。
This paper presents a matrix structural analysis of variable stiffness on the complete loading history of prestressed concrete grids with unbonded tendons.
本文采用变刚度的矩阵位移法分析无粘结预应力混凝土网格梁的加载全过程。
To specify it, the stiffness models of the flexible joint by using the displacement matrix method in structural analysis are established firstly.
为探索这类全柔性机构的运动学问题，首先建立起柔性铰链变形刚度模型。
The dynamic stiffness matrix method is a powerful means of solving vibration problems in structural engineering, particularly when higher natural frequencies and better accuracies are required.
动态刚度阵法被广泛的应用于工程结构振动分析中，尤其是在需要获得更高阶频率和更高精度的振动问题时。
This thesis generally discusses the finite element method's application in the structural analysis and the optimum design about three-dimensional car parking lot, and introduce stiffness matrix.
概述了有限元法在立体停车库刚架结构分析和优化设计中的应用，并引入了刚度矩阵。
The whole stiffness matrix of structural system is derived by condensation approach.
分析了结构运动方程，并采用缩聚法建立结构总侧移刚度。
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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