An experimental study on multi-structural coupling loss factors of machine spindle

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Journal of Vibration and Shock ›› 2018, Vol. 37 ›› Issue (16) : 98-103.

LI Haihong，WANG Fei

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Abstract

The refinement dynamic model of electrical spindle is significant for design to keep machine operating smoothly in high speed.Statistical energy analysis is proved to be effective to solve the dynamics of complicated system, such as the electrical spindle.In order to investigate the key parameters by statistical energy analysis, an experiment was carried out to build models of the damping loss factors, the total loss factors, the energy ratio and the coupling loss factors.The damping loss factors and total loss factors of coupling subsystem were obtained by processing the data form attenuation response by transient excitation.The coupling subsystems energy ratio was worked out by the average admittance.The coupling loss factor was calculated by solving the transient energy balance equations.By comparing with theoretical analysis, it is testified that the measurement and analysis method are effective to obtain the coupling loss factors by the transient excitation.They are useful to get the coupling loss factors of complicated dynamics system easily and efficiently.
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transient excitation / total loss factors / average admittance / coupling loss factors

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LI Haihong，WANG Fei. An experimental study on multi-structural coupling loss factors of machine spindle[J]. Journal of Vibration and Shock, 2018, 37(16): 98-103

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