Frequency variety analysis and equivalent algorithm of metal spring stiffness

LIU Li; ZHANG Wei-hua

Volume 7 Issue 5

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LIU Li, ZHANG Wei-hua. Frequency variety analysis and equivalent algorithm of metal spring stiffness[J]. Journal of Traffic and Transportation Engineering, 2007, 7(5): 24-27.

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LIU Li, ZHANG Wei-hua. Frequency variety analysis and equivalent algorithm of metal spring stiffness[J]. Journal of Traffic and Transportation Engineering, 2007, 7(5): 24-27.

LIU Li, ZHANG Wei-hua. Frequency variety analysis and equivalent algorithm of metal spring stiffness[J]. Journal of Traffic and Transportation Engineering, 2007, 7(5): 24-27.

Citation:

LIU Li, ZHANG Wei-hua. Frequency variety analysis and equivalent algorithm of metal spring stiffness[J]. Journal of Traffic and Transportation Engineering, 2007, 7(5): 24-27.

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Frequency variety analysis and equivalent algorithm of metal spring stiffness

Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

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Author Bio:
Liu Li(1979-), female, doctoral student of engineering, +86-28-66142901, 1iuli_1979_1211@163.com

Zhang Wei-hua(1961-), male.EngD, professor, +86—28—87601068, tpl@home.swjtu.edu.cn
Received Date: 2007-08-20
Publish Date: 2007-10-25

Abstract

Abstract

In order to study the dynamic characteristics of metal helical spring and its dynamic stiffness response to driving frequency, a finite element model of the spring was set up by using FEM, its steady-state response was computed, its frequency-amplitude characteristic curve was analyzed, and an equivalent algorithm of its stiffness was proposed.Computation result shows that the dynamic stiffness of the spring increases with the increase of driving frequency in general tendency, it is minimal and smaller than the static stiffness of the spring corresponding to resonant frequency, however, it is maximal and greater than the static stiffness corresponding to anti-resonant frequency; the stiffness-frequency curves of finite element model and equivalent algorithm almost overlap, so the dynamic characteristic of the spring is remarkable, and the algorithm is feasible.
- vehicle engineering,
- metal helical spring,
- dynamic stiffness,
- finite element method

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References

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