COOPERJ E.Extending the logarithmic decrement method to analyse two degree of freedom transient responses[J].Mechanical Systems and Signal Processing,1996,10(4):497-500.Cooper, J.E. Extending the Logarithmic Decrement Method to Analyse Two Degree of Freedom Transient Responses Mechanical s y s t...
The logarithmic decrement method was applied to determine the modal parameters (Aristizabal et al., 2003), which is the amplitude reduction rate of a free damped vibration, defined as the natural logarithm of the ratio between any two successive amplitudes measured in the same direction (Beards, ...
由于较近间隔处的放大系数与转子的同步(不平衡)激励无关,因此只能根据阻尼进行近似计算。其次,采用阻尼可以将固有频率与运行速度比的最小值规定为 0.8 至 0.4,从而确保转子不会产生明显的次同步振动。 The logarithmic decrement, δ, is related to the damping factor, ξ, as given in Equation (I.1): 对数...
The damping ratios of some measuring points of load case W3-2-1 by logarithmic decrement me [translate] abluesunshine bluesunshine [translate] a•growing up [translate] a设身处地的思考 Putting oneself in another's place ponder [translate] ai am speaking with my mom 我与我的妈妈讲话 [...
The time-domain logarithmic decrement method applied here is generally used for estimation of the damping ratio of the dominant vibration mode90. Given the way the experiment were carried out here, it is likely that we excited this dominant mode; the oscillations of the wing specimens were domina...
The logarithmic decrement of damped vibrations of materials is determined using a theoretical-experimental method. The method is based on measuring the deflection amplitudes of flat cantilever test specimens during their damped vibrations according to the first resonance mode, on the description of interna...
Tl amalgams, values of the eutectic are perfectly coincident. The logarithmic decrement of the 39.9% at. Tl is located, in the phase diagram, on the right side with respect to the 40% at. Tl.doi:10.1080/00319109608030716MaseraMelania BoscoTaylor & Francis GroupPhysics & Chemistry of Liquids...
The logarithmic decrement of damped vibrations of materials is determined using a theoretical-experimental method. The method is based on measuring the deflection amplitudes of flat cantilever test specimens during their damped vibrations according to the first resonance mode, on the description of ...
From Figure 7, the use of the Half-Power Bandwidth method returns an overall damping coefficient c of the flexible joint equal to 11.8 Nms/rad. The obtained value is also validated via the Logarithmic Decrement method. Figure 7. Experimental open-loop response (Bode magnitude plot) of joints ...
The logarithmic decrement ξ = 0.053 was applied to the model as per the work by Huang et al.35. The calculated values according to formula (5) are given as follows: $$\alpha = 1.5644 \cdot 10^{3} ;\quad \beta = 1.7180 \cdot 10^{ - 5}$$ (6) Finally, the nonlinear ...