Research about vibration characteristics of timing chain system based on short-time Fourier transform

2017 2nd International Seminar on Advances in Materials Science and Engineering

Xi, Jiaxin^1 ; Liu, Ning^1

School of Civil Engineering, Jilin Jianzhu University, Changchun

130118, China^1

关键词: Dynamic techniques;    External excitation;    Low-frequency vibration;    Multi-body dynamic simulation;    Roller-chain drive;    Short time Fourier transforms;    Vibration characteristics;    Vibration frequency;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012163/pdf
DOI  :  10.1088/1757-899X/231/1/012163

来源: IOP

【 摘 要 】

Vibration characteristic of timing chain system is very important for an engine. In this study, we used a bush roller chain drive system as an example to explain how to use mulitybody dynamic techniques and short-time Fourier transform to investigate vibration characteristics of timing chain system. Multibody dynamic simulation data as chain tension force and external excitation sources curves were provided for short-time Fourier transform study. The study results of short-time Fourier transform illustrate that there are two main vibration frequency domain of timing chain system, one is the low frequency vibration caused by crankshaft sprocket velocity and camshaft sprocket torque. Another is vibration around 1000Hz lead by hydraulic tensioner. Hence, short-time Fourier transform method is useful for basic research of vibration characteristics for timing chain system.