Application of Experimental Modal Analysis Method in Researching of Mechanical Structure Dynamic Characteristics

Abstract:

With the purpose of realizing the analysis of mechanical structure dynamic characteristics and inhibit vibration and noise, combined with the analysis of a certain type of high speed sewing machines vibration characteristics, we carry on the concrete experimental modal analysis, and compare the results of the experimental modal analysis with the results of spectrum analysis. The analysis results show that the second order natural frequency of the shell is close to two octaves under the normal working speed of sewing machine and it will lead to resonance. Enhancing the structural rigidity and the natural frequency under this modal to avoid resonance frequency is the key to improve vibration resistance of the structure.

• Periodical: Advanced Materials Research (Volumes 694-697)
• Pages: 370-373
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.694-697.370
• Online since: May 2013
• Authors: Zhang Yu*, Wen Zheng Cai
• Keywords: Modal Analysis, Noise, Resonance, Vibration

References

[1] Dihua Guan: Modal analysis technique. (Qinghua University press,China 1996).

[2] Zhifang Fu, Hongxing Hua:Modal analysis theory and Application.(Shanghai Jiao Tong University press,China 2000).

[3] Guoqing Zhang, Kang Lin and Hai Lin: Mechanical transmission. Vol.5(2011):p.92

[4] Jun Liu, Jianli Gao, Guizhi Mu, Wenlei Xie:Vibration and Shock. Vol.3(2009):p.174