Study on damping effect about shaking table test

Abstract:

This paper designed and condeuced a ten-story frame model about shaking table test, carried out the model test under low frequency,medium frequency and high frequency respectly.According model test results,using different analysis methods, including free vibration attenuation, half-power spectrum method and HHT method. Acquire the first three natural frequency and correspond model damping ratio.Then conduced the corresponding numerical simulation of the model test use Rayleigh and Caughey damp assumption.And compared the differences between different damping models.Described how to make more reasonable simulation according experiment result detailed.

Key words:shaking table,Rayleigh damp, Caughey damp,HHT