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It is supposed that the initial normal stiffness of unloading and reloading curves is calculated from those of the previous loading and unloading curves, and then the cyclic loading constitutive equation for rock fracture is established.

假定卸载曲线和重加载曲线在法向的起始刚度由前一次加载曲线和卸载曲线决定，从而完全确定岩体节理循环加载本构方程。

The cyclic symmetric conditions of node points are presented to modify the stiffness and mass matrices of the substructure.With the use of the structural cyclic symmetry and the complex constraint conditions,the eigenvalue ...

这证明复约束法既极大地减少了计算所需内存和机时，又可建立包含轮齿和轮体在内的计算模型，保证了齿轮结构特征值问题计算的完整性和准确性。

The formation of different stiffness or viscoelasticity area was very important to the changes of cell shape during cytokinesis.

胞质分裂过程中不同刚度或黏弹性区域的形成对细胞形态的改变至关重要。

The governing equation of in-plane vibration of cable-restraint system is derived by means of D'Alembert principle, and then those partial differential equations are transformed into a set of ordinary differential equations by Garlerkin method. The method of Runge-Kutta integration is applied to solve the equation. The simulation analysis is made to prove that this vibration control has obvious damping effects and then the influence of cable tension, support mass, natural frequency and spring stiffness on the damping are discussed. Eventually, the approximate analytic solution of the optimum damping parameter is obtained to provide a simple and effective reference and design method for the engineers.

通过D'Alembert原理建立拉索－弹性约束系统振动方程，通过Galerkin方法将偏微分方程转化为常微分方程，应用龙格－库塔积分法求解方程；经过仿真分析，验证了该振动控制具有明显的减振效果，并且讨论了初始拉力、支座质量、振动频率及弹簧刚度对减振效果的影响；最后给出了计算最优阻尼参数的近似解析式，为工程师提供了简便有效的参考依据及设计方法。

The relationship between stiffness, damping coefficient dissipation factor and frequency, and acting force is acquired.

获得测试对象的刚度系数、阻尼系数以及损耗因子等动力学特征参数值与使用频率、作用力幅值以及合金厚度之间的对应关系。

Furthermore, numerical simulations are performed to give the influences of several parameters such as the damping, loss factor and stiffness of isolator on power flow transmissibility.

此外，数值模拟结果给出了隔振器的阻尼、损耗因子以及刚度对功率流传递率的影响，结果将有助于被动和主动隔振器的设计和性能评估。

The thermodynamic characteristics of air spring are introduced. Also analyzed are the vertical stiffness and dampness characteristics.

介绍了空气弹簧的热力学特性，对空气弹簧的垂直刚度特性和阻尼特性进行了分析。

In order to analyze the influence of filled metal particles on impact force for hydraulic pile hammer, analytical solution of mathematic model for pile hammer filled with metal particles considering effects of metal particles was presented. In the solution, lumped mass were used as metal particles, a spring was used as contact stiffness between metal particles and hammer body, different variable lumped masses were used as pile hammer, the ram and anvil, a spring and a dashpot were used as the anvil cushion and pile respectively.

为分析填充金属颗粒对打桩锤锤击力的影响，考虑填充金属颗粒的作用，用集中质量块表示填充的金属颗粒，用弹簧模拟金属颗粒与锤体相碰处的接触刚度，用不同的集中质量块表示桩锤、砧座和桩帽，用并联的弹簧、阻尼器表示锤垫，用弹簧表示桩垫，用阻尼器表示桩，建立了平衡方程。

Firstly, as the theoretical basis for DCC, the stiffness characteristics of DCC parallel mechanism is investigated.

首先，作为实现直接柔顺控制的基础，研究了空间任意自由度并联机构的刚度特性。

This paper calculates the strength section, flexural stiffness and deflection ofconcrete plate unbonded prestressed CFRP-lamina.

同时也对无粘结预应力碳纤维板材加固混凝土抗弯构件的正截面强度、抗弯刚度以及挠曲变形进行了计算。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。