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- logarithm damping ratio 对数衰减率
- 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。
- 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。
- 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。
- The shear modulus and damp ratio characteristics of typical strata are achieved in the dynamic test, based on GDS triaxial dynamic system. 2．利用GDS三轴仪对工程场地内的原状土样进行了室内动力试验，获得了各主要土层的动弹性模量与阻尼比。
- The inherent frequency, mode, damp ratio and impact coefficient of the bridge were achieved by comparing the actual test results with the calculation results. 将实桥测试结果和计算分析结果进行了比较，并且获得了大桥的固有频率、模态、阻尼比和冲击系数。
- Based on these researches, the calculation methods of the parameters and distribution of energy dissipation devices and equivalent damping ratio are proposed. 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。
- Through the swept frequency experiment study for a kind of CD-ROM,the damp ratio of vibration system and natural frequency of vertical vibration model are obtained. 通过对某型号CD光驱的隔振系统作扫频实验,获得振动系统的阻尼比和竖直振型对应的固有频率。
- 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 characteristic of the logarithm 6.3214 is 6. 对数6.;3214的首数是6。
- Through theory deducing and analyzing, the calculation formulas of equivalent stiffness and equivalent damping ratio as well as the graph of system period are brought forward. 通过理论推导和分析，得出了新型减隔震支座的等价刚度和等价阻尼比的计算式和系统周期图示。
- In the CGSM, shear modulus and damping ratio of the soil are functions of depth and shear strain, wave equation for the transmission of shear wave is obtained. 在连续梯度土介质模型中，剪切模量和阻尼比是位置深度和剪应变的函数，导出剪切波在土体中传播的波动方程。
