METHOD OF ABSTRACT EFFECTIVE VIBRATION SIGNAL CHARACTERISTICS BASED ON FRACTAL DIMENSION

Abstract

Abstract: The effective extract to vibration signal characteristics is the key technology in the process of dynamic analysis and processing. For the relationships between vibration characteristics and energy,and on the basis of energy characteristics in the procedure of vibration,the ANSYS/LS-DYNA software is used to simulate the dynamic signal under the impulse excitation for anchor bolt. Then the status of free and tension displacement wave is got respectively. The fractal dimension method is used to handle the wave,and the first arrival and integer cycle position is then obtained in MATLAB software. The result obtained from this study is demonstrated the reliability with the method of fractal to extract the valid signal characteristics.

Key words: vibration analysis, nondestructive testing, anchor bolt, energy characteristics, fractal dimension, ANSYS/LS-DYNA, MATLAB

CLC Number:

TB332

MENG Xiang-cheng, YANG Ying-tao, YANG Jian-hui. METHOD OF ABSTRACT EFFECTIVE VIBRATION SIGNAL CHARACTERISTICS BASED ON FRACTAL DIMENSION[J]. COMPOSITES SCIENCE AND ENGINEERING, 2013, 0(4): 35-38.

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