Method of Improvement in Identification Accuracy of the Dynamic Characteristics of Joints in Jointed Structure

Abstract:

In this study, we examined influencing factors on the identification accuracy and improving method of the identification accuracy. As a result, the influence of the condition of the dynamic characteristic values is large and these values should correspond to the tangential and vertical directions. The influence of treating dynamic characteristic parameters of the same plural joints is also large, and then the parameters of the same plural joints should have the same value. In addition, the tangential dynamic characteristics should be identified from the vibration mode which has large tangential relative displacement between the joint interfaces. Similarly, the vertical one should be identified from the vibration mode which has large vertical relative displacement between the joint interfaces. Finally, the identification accuracy can be improved greatly by considering these influences.

• Periodical: Key Engineering Materials (Volumes 523-524)
• Pages: 451-456
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.523-524.451
• Online since: November 2012
• Authors: Shinji Shimizu, Yoshiaki Kabaya, Haruhisa Sakamoto, Kenichi Yamashita
• Keywords: Damping Coefficient, Identification, Joint Model, Machine Tool, Static Stiffness

References

[1] M.Yoshimura, Identification of Spring Stiffness and Damping Coefficient in Machine Tool Joints : A Method utilizing Measurement and Simulation by Computer for the Simplified Joint Models, The Japan society of precision engineering, vol.45 issue 540 (1979), pp.1418-1424

DOI: 10.2493/jjspe1933.45.1418

[2] Shinji SHIMIZU, Yoshiaki KABAYA：Identification Method of Dynamic Characteristics of Joints in Jointed Structure，LEM21，3264