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1·Hang masses from springs and adjust the spring stiffness and damping.

用质量吊起物质，并调节弹簧的硬度和阻尼。

2·And it also discussed the distribution of spring stiffness both at the top and the bottom in designing the springs of the vibration hammer.

从振体处于一定位置时弹簧压缩量考虑，探讨了振动锤弹簧设计中，上、下弹簧刚度的分配问题。

3·For the combination of external force and moment lord, the parameters of 2R PRBM for the complex loads is obtained by limiting the spring stiffness coefficient.

针对同时受力和力矩的模型，采用限制刚度系数的方法得到了复合载荷形式的2R伪刚体模型参数。

4·When the support spring stiffness gets larger and larger, the rigid body mode characteristic will diminish as the flexible characteristic becomes more pronounced.

当支持弹簧刚度变得越来越大时，随着弹性体属性变得越来越突出，刚体模态属性将减少。

5·Then the damping effect of elastic restraint is verified and the influence of the damping coefficient and the spring stiffness on the damping effect is discussed.

验证了弹性约束对拉索振动的减振效果，讨论了阻尼系数和弹簧刚度对减振效果的影响；

6·The time which the valve core takes by reaching the balance position and the maximum position will reduce linearly when the spring stiffness coefficient increase;

弹簧劲度系数与阀芯达到的最大位移、平衡位置位移呈线性递减关系；

7·And the effects of the retaining wall stiffness, strut stiffness, perforce and soil spring stiffness on the internal force and deformation of the retaining structures.

同时，论文还分别分析了围护桩墙刚度、支撑刚度、支撑预加轴力以及被动区土弹簧刚度对围护结构内力和变形的影响。

8·Not only giving one example and get there methods of response result, but also analysis its response, discuss the effect on the response when spring stiffness changed.

给出一个算例，得到了三种方法的响应结果。并对它们的响应进行分析，探讨了扭杆弹簧刚度变化对响应的影响。

9·With analyzing the change rule of acceleration of center of mass, makes a improvement scheme on ride comfort performance, mainly about spring stiffness and tire radial stiffness.

通过质心处加速度变化规律的分析研究，提出平顺性的改进方案，主要是针对弹簧的刚度与轮胎径向刚度来进行改进。

10·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。