Mean stress effects on random fatigue of nonlinear structures

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Title: Mean stress effects on random fatigue of nonlinear structures
Author: Sweitzer, Karl; Ferguson, N.S.
Abstract: Random fatigue analysis techniques have concentrated on linear structures that exhibit symmetric stress range probability density functions (PDF). In narrowband response and broadband random response it is assumed that the bending stress range PDF is symmetric and has zero mean stress. Structures that can exhibit geometrical nonlinearity, under large deflections, typically introduce membrane effects, which are additional positive tensile stresses that tend to skew the stress range PDF. This paper investigates fatigue analysis approaches that include mean stress effects and show how they can be applied to nonlinear random vibration problems.
Description: Conference proceedings from the twelfth international congress on sound and vibration.
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Date: 2005-07

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