Application of Power Spectral Density Method to Fatigue Life Estimation of the Axle Structure

2014 ◽  
Vol 487 ◽  
pp. 272-275
Author(s):  
Rui Feng Guo ◽  
Peng Li Wang
Keyword(s):  
Fatigue Life ◽  
Spectral Density ◽  
Density Function ◽  
Power Spectral Density ◽  
Random Vibration ◽  
Spectral Density Function ◽  
Power Spectral Density Function ◽  
Life Estimation ◽  
Power Spectral ◽  
Fatigue Life Estimation

Based on the random vibration theory, fatigue strength theory and Miner cumulative damage theory, the formulas for estimation of fatigue life which can be coped with narrowband and broadband random vibration was derived by the peak distribution function. The power spectral density function of axle structure is deduced after the power spectral density of standard road and the vibration model of wheel had studying. Combined the power spectral density function with broadband random vibration fatigue life estimation formula, the fatigue life of axle structure was obtained. This method is simple and has a strong engineering practicality.

Analysis on Random Response of a Simply Supported Beam Subjected to Distributed Load

2014 ◽  
Vol 518 ◽  
pp. 120-125 ◽  
Author(s):  
Xiao Jing Li
Keyword(s):  
Spectral Density ◽  
Density Function ◽  
Power Spectral Density ◽  
Random Vibration ◽  
Spectral Density Function ◽  
Random Response ◽  
Power Spectral Density Function ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Power Spectral

The random vibration of simply-supported beam is simplified of the random vibration of the SDOF theory ,the paper analyse its random response. We get the displacement power spectral density function the velocity power spectral density and the acceleration power spectral density function of the maximum displacement point. The same example is calculated by ANSYS, it also get the same results.It proved that using the finite element analysis software ANSYS to anlaysis the random vibration of the simply-supported beam has advantages of fast speedhigh precisioneasy stepsthe small error and so on..

scholarly journals Specification of optical components using the power spectral density function

1995 ◽  
Author(s):  
Janice K. Lawson ◽  
C. Robert Wolfe ◽  
Kenneth R. Manes ◽  
John B. Trenholme ◽  
David M. Aikens ◽  
...  
Keyword(s):  
Spectral Density ◽  
Density Function ◽  
Power Spectral Density ◽  
Spectral Density Function ◽  
Power Spectral Density Function ◽  
Optical Components ◽  
Power Spectral
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