Static and Dynamic Characteristics Optimization of the Whole Large-sized Thread Grinder Based on the Joint Surface
WANG Yu-lin, WU Xiao-feng, FENG Hu-tian
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School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing,210094
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History+
Received
Revised
Published
2011-09-27
2011-11-16
2012-10-28
Issue Date
2012-10-28
Abstract
To accurately predict the static and dynamic characteristics of the whole large-sized thread grinder, parameters of the joint surface should be considered in the FEA model. The joint surface was handled with the spring-damping element, and the stiffness and damping of the joint surface was calculated by Yoshimura-Method. The FEA model of the whole grinder based on the joint surface was established by ANSYS, to find its weak points and study the influence of joint surface through the static and dynamic analysis. Then the stiffness of joint surface which had more important influence was optimized to improve the dynamic characteristics. The results show that the static stiffness in x, y and z directions is increased by 15%, 19% and 7%; Each order of natural frequency is all increased, and the first natural frequency is increased by 10%; The resonant amplitude is reduced about 1/2, and the vibration has got suppression.
WANG Yu-lin;WU Xiao-feng;FENG Hu-tian.
Static and Dynamic Characteristics Optimization of the Whole Large-sized Thread Grinder Based on the Joint Surface[J]. Journal of Vibration and Shock, 2012, 31(20): 147-152
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