Computation of Stress Power Density Spectra of
Components in a Random Vibration System

PAN Wu-ming; YANG Ming-ju; XU Yang

Volume 16 Issue 1

Feb. 2003

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Article Contents

Journal of Southwest Jiaotong University > 2003 > 16(1): 12-16.

PAN Wu-ming, YANG Ming-ju, XU Yang. Computation of Stress Power Density Spectra ofComponents in a Random Vibration System[J]. Journal of Southwest Jiaotong University, 2003, 16(1): 12-16.

Citation:

PAN Wu-ming, YANG Ming-ju, XU Yang. Computation of Stress Power Density Spectra of Components in a Random Vibration System[J]. Journal of Southwest Jiaotong University, 2003, 16(1): 12-16.

PAN Wu-ming, YANG Ming-ju, XU Yang. Computation of Stress Power Density Spectra ofComponents in a Random Vibration System[J]. Journal of Southwest Jiaotong University, 2003, 16(1): 12-16.

Citation:

PAN Wu-ming, YANG Ming-ju, XU Yang. Computation of Stress Power Density Spectra of Components in a Random Vibration System[J]. Journal of Southwest Jiaotong University, 2003, 16(1): 12-16.

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Computation of Stress Power Density Spectra of Components in a Random Vibration System

Publish Date: 25 Feb 2003

Abstract

Abstract

The key to analyzing the fatigue life of a random vibration system is to determine its stress power density spectra (SPDS) at the fatigable position of load bearing components. A method called unit stress matrix method is proposed in this paper to calculate the SPDS of non-self-vibration components in a random vibration system. The existence of the unit stress matrix is discussed. An example is presented to show the effectiveness of the proposed method and the procedure of calculation.
- random vibration,
- power spectra density,
- unit stress matrix