首页|Random vibration analysis of a ring model based on a modal cross-spectral density
Random vibration analysis of a ring model based on a modal cross-spectral density
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
Elsevier
The cross-spectral density (Cross-SD; CSD) can be used to explore the relationship between random input forces and responses in the frequency domain. Furthermore, it can identify antiresonance frequencies more accurately than direct-SD. The ring structure is excellent in geometrical simplicity and structural stability, and thus can be applied into potential applications in various fields such as nanosensors and actuators. In this study, the frequency response function, autocorrelation function, and SD are defined for a unit force harmonic input based on Gaussian white noise applied to the ring structure. Then, the cross- and direct-SDs are compared to provide a new perspective on vibration analysis. Additionally, the variation of SD is analyzed based on the location of the responses, the standard deviation (StDev) of the maximum response, and the bandwidth. As a result, the significance of investigating eigenfrequencies and antiresonances can be illustrated through a simple computational model. Moreover, the proposed approach also shows significant potential for practical applications, such as predicting fatigue life and vibration control in structural engineering. In this study, a novel method is presented to advance vibration engineering by extending the SD model of beams to ring structures.
AntiresonanceCross-spectral densityIn-plane motionRandom vibrationRing model
Jung-Hwan Kim
展开 >
Department of Mechanical Engineering,Wonkwang University,460,Iksan-daero,Iksan-si,Jeonbuk-do 54538,South Korea
NETL
NSTL
Elsevier
