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- The natural frequencies, modal shapes and modal damping ratios of the typical structural system are got by dynamic behaviour measurement. 通过实测试点工程结构的动力反应,获得结构的自振频率、振型和阻尼比等模态参数。
- Dynamic characteristics, in particular the modal damping ratios, of active tendon-linked adjacent buildings are then sought using a generalized modal analysis method. 然后应用广义振型分析方法,寻求了主动锚索联结的相邻建筑的动力特性,特别是振型阻尼比;
- Shaking Table Experimental Study on Composite Modal Damping Ratio of SSI System 土-结构相互作用体系合成模态阻尼比的振动台模型试验研究
- equivalent modal damping ratio 等效阻尼比
- modal damping ratio 模态阻尼比
- The main frequency-domain parameters, which are discussed here, include modal numbers, cross terms of force spectra, and cross terms of modals as well as damping ratio. 参数分析的内容包括参振模态的数目、力谱交叉项、模态交叉项、结构阻尼比,并得到了一些有价值的结论。
- The experimental results show that the modal damp rates increase, and the amplitudes of frequency response function decrease.The control strategy is effective. 实验结果表明该控制使被控模态阻尼比增加,频响函数的幅值衰减较大,有较明显的控制效果。
- This paper delves into the method of finding the best damp ratio and intrinsic frequency ratio of CVIS. 得出系统求解方程及寻找最佳阻尼比和固有频率比的方法。
- It is found that for the above situation the soil material damping ratio is commonly less than 3%. 计算分析表明风振时层状场地地基土的材料阻尼比很小,一般不超过3%25。
- Depending on the damping ratio adjusting,the low measurement range and the high frepuency response was realized. 采用调整阻尼比技术,解决了传感器的低量程、高频响的技术难点。
- The band damp did not equate to mathematic average of the two modal damps, or either of the two modal damps. 系统的宽带阻尼与两模态阻尼值的数学平均值无明显关系,通常也不等于两模态阻尼值中的最大值或最小值。
- Through the study of the dynamic hysteretic loop curve of silt clay, a new bilinear model of soil based on damping ratio was proposed. 摘要通过对粉质粘土动力滞回曲线的研究,提出了一种新型基于阻尼比的双线型土动力本构模型。
- Soil dynamic parameters, including dynamic shear modulus ratio and damping ratio, have important effects on the earthquake response of soil layer. 摘要土动力学参数即土的动剪切模量比和阻尼比,对土层地震反应分析结果有重要影响。
- The test covers the deflection and stress of the main sections, natural frequency, impact coefficient and damping ratio, etc. 试验内容主要有关键拱肋截面的位移和内力、振动频率、冲击系数和振动阻尼比等静动力特性。
- For the notional rotor system, the damper steady displacement will decrease when kinematic couplings are introduced, and hence the regressive lag modal damping can be increased. 对于所考虑的旋翼系统来说;几何耦合可能会减小减摆器的静态位移;从而提高摆振后通型模态的阻尼.
- Results show that the rubberized concrete has higher damping ratio and lower elastic modulus, and thus lower natural frequency for elements. 试验结果发现,橡胶混凝土的阻尼较之普通混凝土有显著提高,弹性模量和基频随橡胶掺量的增加而降低。
- Significant differences occur in the mass,stiffness,period and damp ratio after adding steel storeys on the top of the original building. 采用钢结构加层后,结构的整体质量、刚度、周期、阻尼比等都发生了较大的变化,应进行结构的整体分析。
- Speed feedback of yaw angle was realized through adding mode damping ratio of Dutch roll and adjusting mach number by height. 偏航角速率反馈以增加荷兰滚模态阻尼比,按高度及马赫数调参数实现。
- The influences of damping ratio,slamming rate and coefficient of correlation on the reliability were studied,and the reliabilities of v. 最后通过算例分析了舰船结构的阻尼率、砰击率及相关系数对可靠性的影响,并计算分析了舰船结构各种失效模式的可靠性。
- Based on these researches,the calculation methods of the parameters and distribution of energy dissipation devices and equivalent damping ratio ar. 在此基础上,给出了消能减震结构设计中阻尼器分布、阻尼器参数和等效阻尼比等有关计算方法。