In this paper, the stiffness matrix has been obtained by the direct stiffness method, and the mass matrix, by the condensation mass model.
本文采用直接刚度法得到刚度矩阵，用聚缩质量模型得到质量矩阵。
The parameter identification of joining stiffness of rudder hydraulic servo mechanism can be done by using the direct method of characteristic equation anti problem.
应用特征方程反问题的直接方法对舵面-液压伺服机构连接刚度参数进行了辨识。
Nonlinear physical parameters of the docking mechanism-inertial, damping and stiffness matrices, are identified by direct parameter estimate(DPE)method with input-output data of the system.
采用直接参数识别方法（DPE）由系统的输入、输出数据识别空间对接机构的物理参数：惯量矩阵、阻尼矩阵和刚度系数矩阵。
Acoustics and vibration - Laboratory measurement of vibro-acoustic transfer properties of resilient elements - Part 2: dynamic stiffness of elastic supports for translatory motion - Direct method.
声学和振动。弹性件振动声学传输性能的实验室测量。第2部分：平移运动用弹性支架的动态劲度。直接法。
In order to solve the problem of insufficient measured modes in the dynamic model updating, a direct model updating method using added known stiffness components is proposed.
为了解决模型修正中所需要模态数据不足的问题，提出了一种基于附加已知刚度的模型修正直接方法。
In order to solve the problem of insufficient measured modes in the dynamic model updating, a direct model updating method using added known stiffness components is proposed.
为了解决模型修正中所需要模态数据不足的问题，提出了一种基于附加已知刚度的模型修正直接方法。
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