logarithmic decrement
英 [ˌlɒgəˈrɪðmɪk ˈdɛkrɪmənt]
美 [ˌlɑgəˈrɪðmɪk dɪˈkrɪmənt]
对数减量
双语例句
- The natural logarithm of this ratio is called the logarithmic decrement.
此比率自然对数称为对数的减量。 - Average logarithmic energy decrement
平均对数能量衰减率 - The important action of eigenvector in estimating stability margin is investigated, and the limitation of both system damping and logarithmic decrement criteria is pointed out.
探讨了特征向量在评估稳定性裕度的重要作用，指出了传统的对数衰减率与系统阻尼判据在评估轴承稳定性裕度时的局限性。 - The studies show that compared with the conventional logarithmic decrement method, this method need not to determine the baseline, and is insensitive to baseline drift and low frequency interference.
研究表明，与传统的对数衰减法相比，新方法无须确定基线，估计结果对基线漂移和低频干扰不敏感。 - The polymeric molecular motions of MMA-AN copolymer are studied by changes of the relative rigidity 1/ p~ 2 and logarithmic decrement which change with temperature and time.
作者通过相对刚度1/P~2和对数减量△随温度或时间的变化，来表征不同组分的MMA-AN共聚物的多重转变。 - So the conclusion that the logarithmic decrement rule fitting for linear systems widely cannot be used in nonlinear unbalanced bearing rotor systems directly, therefore some reference are given to establish the new stability rule for nonlinear unbalanced bearing rotor system.
从而得出广泛适用于线性系统的对数衰减率准则难以直接推广应用于非线性不平衡轴承转子系统的结论，为建立适用于不平衡轴承转子系统的非线性稳定性准则提供了参考。 - Based upon two curves of the second time enveloping, the damping rate which varies with amplitude can be determined using logarithmic decrement.
根据第二次包络的两条曲线，用对数减量确定随响应振幅而变的阻尼率。 - Finally, the natural frequencies and damping ratios of the structure can be found from these signatures by logarithmic decrement method.
最后，用对数减缩法，由这些曲线求出结构物的固有频率和阻尼比。 - For the designing of foe musical instrument material substitutes, the vibration properties, specific dynamic modulus and logarithmic decrement of some wooden musical instrument materials are measured by the vibration testing system.
对于乐器用代替材料的设计，通过振动测试系统测定了一些木质乐器材料的比动态模量和对数衰减系数等振动特性。 - The results show that the logarithmic decrement of the system is greatly increased when it is equipped with the damper.
结果表明：装配阻尼器后的转子系统其对数衰减率有了很大提高。 - The experimental results show that the damping capacity increases lineally with the torsion strain. The maximum of logarithmic decrement reaches 0.1 when the torsion strain value is 1 × 10-4.There is no damping peak during this process.
研究结果表明，在常温条件下合金的阻尼性能随扭转应变的增加而呈线性方式增加，扭转应变在1×10-4时，对数衰减率达0.1，且没有出现峰值； - At present, for nonlinear bearing rotor system, people usually use the logarithmic decrement of its linear system as the stability rule of system, this has made a great difference of theory and experiment result.
目前对于非线性轴承转子系统，仍普遍采用其线性化系统的对数衰减率作为系统的稳定性判据，这造成了理论和实验结果相差较大。 - This method considers the whole time histories of vibration, which differs from the traditional damping ratio identification method in the time domain which uses merely the amplitude to calculate damping ratio, and overcomes the defect of the traditional logarithmic decrement method for high accuracy requirement of amplitude.
该方法考虑了完整的基础振动时程，不同于传统的时域阻尼比计算方法仅仅依据振幅的数值计算阻尼比，克服了传统对数衰减法对幅值测量精度要求很高的缺陷。