The replacement foundation modulus was ensured by the method of equivalent-stiffness.
采用等刚度法确定换填基础模量；
The synthesized reload modulus was confirmed by resilience test, plate loading test, and large scale bearing test. The replacement foundation modulus was ensured by the method of equivalent-stiffness.
分别采用室内回弹试验、野外平板载荷试验和堆载试验，综合确定土体的再压缩模量；
Then, an equivalent linearization method is applied to get its linearized stiffness matrix. The estimating method for the equivalent fundamental frequency of the membrane is deduced.
应用等效线性化方法得到方程组的线性化刚度矩阵，给出了结构等效一阶频率的计算方法；
Meanwhile, the natural frequency was calculated using this method in an example, and the natural frequency affected by the change of equivalent spring stiffness was also analyzed.
结合工程实例，采用该模型计算了桩基的自振频率，分析了弹簧等效刚度的变化对模型自振频率的影响。
The assembly rules of a global stiffness matrix and an equivalent nodal loads vector are derived by means of equilibrium method with a numerical example given.
通过位移法分析，导出了结构总刚度矩阵和等效结点荷载列阵的组成规则，并且具体的算例进行了验证。
In the respect of pseudo dynamic test, the author explained the influencing factors of initial inputting stiffness matrix and the equivalent method of mass matrix of model.
在拟动力试验方面，指出了联机试验中初始刚度矩阵的影响因素，建立了模型质量矩阵的等效方法。
Equivalent stiffness method proposed by the authors is used to calculate free-vibration of thin high bridge piers, then the result of calculation is analyzed and compared with that of FEA method.
推导出薄壁高桥墩自振频率的计算公式，并将该公式计算结果与有限单元法计算值进行了分析与比较。
This paper calculates the residual vibration of rotors and axis with a new method equivalent dynamic stiffness factor.
提出用动刚度系数方法对转子和轴系残余振动进行预测。
The method for calculating the equal-section equivalent beam width is presented and the stiffness of the equivalent beam equals to the slab stiffness.
同时按刚度相等原则，给出了折算成等截面等代梁宽度的计算方法。
In the process of modeling, equivalent stiffness and damping of combine surface was calculated by Takashi Yoshimura integration method.
在整机建模的过程中，利用吉村允孝积分法计算出各个结合面的等效刚度及阻尼。
Dynamic differential equation is established with Kane method. The formulas of input torque at each joint and force acting on the ground and the approach to equivalent spring stiffness were presents.
并用凯恩法建立了系统动力学微分方程，推导了跳跃机构各关节输入扭矩和对地面作用力的计算公式，同时提出了确定等效弹簧参数的方法。
A stacking sequence optimization design approach of composite stiffened panel was built up based on equivalent bending stiffness method and Genetic Algorithms (GA).
借助于等效弯曲刚度法和遗传算法，建立了一种复合材料加筋板铺层顺序优化设计算法。
A stacking sequence optimization design approach of composite stiffened panel was built up based on equivalent bending stiffness method and Genetic Algorithms (GA).
借助于等效弯曲刚度法和遗传算法，建立了一种复合材料加筋板铺层顺序优化设计算法。
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