Hello World

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CAE Software of Twin-Tubes Shock Absorber Outer-Characteristic
Changcheng Zhou, Jie Meng
School of Traffic and Vehicle Engineering
Shandong University of Technology
Zibo 255049, China greatwall@sdut.edu.cn Abstract
The pathway throttle and local throttle loss of oil flow in telescopic shock absorber were analyzed, and the pathway loss coefficient and equivalent length of piston holes were studied. According to the thickness and the pre-deformation of throttle slice, and the throttle holes area, the velocity points of valve opening were researched and the analytic formulas of shock absorber velocity when valve opening were given. With the velocity points of valve opening, the model of shock absorber outer characteristic was established by piecewise linear math function. Based on this, the CAE software for shock absorber outer characteristic was developed. A practical example of simulation of shock absorber outer characteristic was given with this CAE software, and the performance test was conducted to verify the CAE software. The results show that the
CAE software is reliable, and the values simulated is close to that tested.

1. Introduction
The shock absorber of automobile is one of the most important components of suspension system, and plays a vital role in the driving process of vehicles[1,2].
The characteristic of shock absorber influences driving smoothness and ride comfortableness of vehicles[3].
The shock absorber used most commonly on automobile is telescopic shock absorber[4].
The characteristic simulation has the significance for the design of shock absorber. With the characteristic simulation, the flaws of design could be found and modified in time, so the design and develop could speed up, while also the test costs could be reduced. However, at present, both in domestic and abroad, the characteristic of shock…...

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