The Design and Analysis of a New Type of Vibration Structure

Abstract:

In this paper, a new type of vibration structure (i.e. swing frame) of vertical dynamic balancing machine is designed, which is based on the analysis of traditional double-plane vertical dynamic balancing machine’s swing frame. The static unbalance and couple unbalance can be separated effectively by using the new dynamic balancing machine with the new swing frame. The modal and harmonic responses are analyzed by using the ANSYS7.0. By comparing the finite element modal analysis with the experimental modal analysis, the natural frequencies and vibration modes are found out, which can provide the dynamics direction for designing vertical dynamic balancing machine. The new dynamic balancing machine can measure static unbalance and couple unbalance directly, and the influence between them is faint. The practical result indicates that the new vertical dynamic balancing machine is suitable for inertial measurement of flying objects, and can overcome the shortcomings of traditional double-plane vertical dynamic balancing machines, in which the effect of plane-separation is inferior. The vertical dynamic balancing machine with the new vibration structure can be widely used in the future application.

• Periodical: Applied Mechanics and Materials (Volumes 1-2)
• Pages: 71-80
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.1-2.71
• Online since: September 2004
• Authors: Din Geng Li, Ji Guang Cao, Jun Wen Wang, Chuan Yao Chen
• Keywords: Couple Unbalance, Modal Analysis, Static Unbalance, Vertical Dynamic Balancing Machine, Vibration Structure

References

[1] San L.X. S (Japanese), Balancing of revolving machine, Mechanical industry press，Beijing, China, (1992).

[2] R. Nailen, Checking and correcting rotor unbalance, Electrical Apparatus, Vol. 54, No. 1(2001), p.31~36.

[3] Zheng Jianbin, Principle and Implementation of Unbalance Signal Extraction from a Dynamic Balancing Machine Based on DWT and DFT, Chinese Journal of System Engineering and Electronics, Vol. 25, No. 4(2003), p.501~504.

[4] L. Meirovitch, Elements of Vibration Analysis, McGraw-Hill, New York, US, (1986).

[5] Shiyu Zhou, and Jianjun Shi, Active Balancing and Vibration Control of Rotating Machinery: A Survey, The Shock and Vibration Digest, Vol. 33, No. 4(2001), p.361~371.

DOI: 10.1177/058310240103300501

[6] Nelson, H.D., and MeVaugh, J.M., The Dynamic of Rotor-bearing Systems Using Finite Elements, Journal of Engineering for Industry, No. 5(1976), p.593~600.

[7] Pilkey, W.D., Bailey, J. and Smith, P.D., A Computational Technique for Optimizing Correction Weights and Axial Location of Balance planes of Rotating Shafts, Journal of Vibration, Acoustics, Stress, and Reliability in Design, Vol. 105(1983).

DOI: 10.1115/1.3269074

[8] Work, V., Machinery Vibration: Balancing, McGraw-Hill, New York, US, (1995).

[9] L. Sperling, and B. Ryzhik et al, Simulation of Two-plane Automatic Balancing of a Rigid Rotor, Journal of Mathematics and Computers in Simulation, Vol. 58, No. 4(2002), p.351~365.

DOI: 10.1016/s0378-4754(01)00377-9

[10] Yeah, N. A, and Yu, Y. S, Dynamic balancing theory and dynamic balancing machine, Huazhong Institute of technology press，Wuhan, China, (1985).

[11] SMS, FDSDEC finite element analysis system user's manual, U.S. A, (1986).

[12] Ewins, DJ, Modal testing: theory and practice, Research Studies Press Ltd, England, (1984).

[13] James, A., An optimization capability for automotive structures [R]. SAE790972.

[14] Ride Vries, The computer aided design analysis and structural optimization of engine accessory components [R], SAE870872.

[15] Cao Jiguang et al, The Plane-separation Error of the Framed Dynamic Balancing Machine with Double Plane Vertical, Chinese Journal of Huazhong University of science and technology, Vol. 28, No. 5 (2000), p.38~40.

[16] Liu Tao, and Yang Fenpeng, Familiarity with ANSYS, Tsinghua University press, Beijing, China, (2002).