自由振动是指在外力使弹簧振子的小球和单摆的摆球偏离平衡位置后，它们就在系统内部的弹力或重力作用下振动起来，不再需要外力的推动。
高速滚动轴承保持架自由振动特性研究_stmopen 关键词】: 滚动轴承 保持架 自由振动 [gap=787]Keywords】: antifriction bearingsretainersfree vibration
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自由振动周期 free oscillating period ; free vibration period
自由振动频率 free running frequency ; free frequency ; freedom vibration frequency
自由振动形式 free vibration mode
无阻尼自由振动 undamped free vibration ; non damping free vibration
自由振动的微分方程 differential equation of free vibration
自由振动试验 free vibration test
受阻自由振动 Damped free vibration ; Vibration damped free
自由振动法 freevibrationmethod
自由振动测量 free vibration measurement
For the purpose, in Chapter 2, the steady-state response of single-degree-of-freedom system with isolation devices are derived. Considering the free vibration and steady-state response of rectangular hysteretic model, the entire response process are discussed.
出于上述目的,第2章推导了单自由度隔震结构模型稳态反应,对于刚性摩擦滞回模型,在自由振动和稳态反应基础上,探讨了系统的反应整体过程。
参考来源 - 组合隔震与三维隔震（振）理论及试验研究Respectively, the model analysis of the parachute during the steady state was made, on that basis, the basic equation of the free vibration of the parachute was set up, as well as the computing method of the intrinsic frequency.
并对稳态扫描伞进行了模态分析,建立了稳态扫描伞自由振动的基本方程与固有频率计算方法。
参考来源 - 末敏子弹运动特性分析研究·2,447,543篇论文数据，部分数据来源于NoteExpress
介绍了一种平面杆系结构自由振动的解析解法。
The analytic method for the free vibration of plane frame structure is presented.
推导了弹性支承梁的横向自由振动模态的特征方程。
The latent equation of the freely vibration modes of elastic bearing beam is deduced.
通过此解答可以解决旋转薄壳自由振动一致有效解的求解问题。
The uniformly valid solutions for free vibration of revolution shells can be worked out through these answers.
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