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A PROBABILISTIC FATIGUE FAILURE ANALYSIS OF LAMINATED COMPOSITE MATERIALS (DAMPING, RANDOM YIELDING, HYSTERESIS, ENERGY)
Abstract
A study of the prediction of the fatigue life of composite materials is presented in this dissertation. Failure is characterized by the accumulation of plastic work to a critical level. Energy accumulation is obtained by calculating hysteretic energy using a probabilistic approach. This approach uses a two parameter model to describe continuous random yielding within an orthotropic material. The two parameters are the mean and standard deviation of the distribution of the yielding elements. The yield distributions are defined with respect to logarithmic strain. It is assumed that the limiting value of accumulated plastic strain energy is constant and is obtained from integration of the plastic portion of the random macroelement up to failure.
Subject Area
Mechanics
Recommended Citation
WRIGHT, JOHN COLIN, "A PROBABILISTIC FATIGUE FAILURE ANALYSIS OF LAMINATED COMPOSITE MATERIALS (DAMPING, RANDOM YIELDING, HYSTERESIS, ENERGY)" (1986). ETD collection for University of Nebraska-Lincoln. AAI8704565.
https://digitalcommons.unl.edu/dissertations/AAI8704565