Estimating Equivalent Mass of Dynamic Vibration Absorber Mounting Point Based on the method of Orthogonal Polynomials

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Journal of Vibration and Shock ›› 2014, Vol. 33 ›› Issue (24) : 211-214.

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Estimating Equivalent Mass of Dynamic Vibration Absorber Mounting Point Based on the method of Orthogonal Polynomials

HE Shan1，YANG Zhi jian1,2，DING Kang1， WU Qing jie1

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Abstract

For the convenience of matching the optimal parameters of dynamic vibration absorber, the main system need to be simplified to single degree of freedom system by estimated its equivalent mass of mounting point. As the traditional mass response method have the shortcomings of complex operation and low accuracy, this paper use orthogonal polynomials to estimate the equivalent mass. Then contrast the results of orthogonal polynomial method and mass response method by the simulation combined with experiment. Results show that the orthogonal polynomial method identification precision is high and the experimental results is close to the simulation results. In addition, through experiment proved using the method of orthogonal polynomial matching with dynamic vibration absorber has a better effect, which coincidence with the optimal conditions of fixed point theory.

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Dynamic Vibration Absorber / Orthogonal Polynomials / Equivalent Mass

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HE Shan;YANG Zhi jian;DING Kang;WU Qing jie. Estimating Equivalent Mass of Dynamic Vibration Absorber Mounting Point Based on the method of Orthogonal Polynomials[J]. Journal of Vibration and Shock, 2014, 33(24): 211-214