Structure Optimization of a Screw Pump Unit Based on Load Identification

Abstract:

In this paper the vibration of a screw pump unit was studied. Firstly the modal of this pump unit was calculated, which was possible thank to the exact finite element model. And the exactness of the result was verified by comparing with the testing one. Based on the correct simulation modal, the load is identified using the experimental results, and the accuracy of the identification is confirmed using the response error. Combined the response spectrum, the load spectrum and the modal analysis results, the causes and control methods of the screw unit's vibration are analyzed. Finally, according to the foregoing calculation results, the system is simulated and optimized. The identified load is loaded on the optimized structure. The responses calculated are compared with the original structure and the optimized results are evaluated.

• Periodical: Advanced Materials Research (Volumes 490-495)
• Pages: 2764-2768
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.490-495.2764
• Online since: March 2012
• Authors: Yue Zhang, Zhi Jun Shuai, Wan You Li, You Hong Xiao, Chun Lai Chen, Quan Zhang
• Keywords: Load Identification, Modal Analysis, Three Screw Pump, Vibration

References

[1] F.T. Li: Screw Pump (China Machine Press, China 2010).

[2] Y.Q. Cai, Y.W. Zhu and L.H. Liu: Journal of Vibration Engineering Vol. 19 (2006) No. 4, p.444.

[3] J.Y. Li: Finite Element Analysis (Beijing University of Posts and Telecommunications Press, China 2001).

[4] Y.Y. Hu: Machine's Load Identification Technique Based on Frequency Domain Least Squares Method (MS., Harbin Engineering University, China 2010).

[5] Z.F. Fu: Modal Analysis Theory and Applications (Shanghai Jiao Tong University Press, China 2000).