Abstract: The magnitudes of response cumulants are investigated for linear systems excited by stochastic inputs. This extension of the classical study of mean and covariance (i.e., first and second cumulants), provides basic information ...

Abstract: Sixteen welded steel specimens have been tested under variable amplitude loadings to determine the extent to which fatigue life is affected by the rate of amplitude variability of the loading process. It appears that rate ...

Abstract: Experimental results from constant amplitude fatigue tests are analyzed to account for the possible effect of residual stresses induced by welding of the specimens. It is shown that large amplitude precycling of a welded ...

Abstract: Structural models are considered that are conveniently viewed as a composite of subsystems. Conditions are sought that assure the simultaneous existence of classical uncoupled modes of vibration for the composite system ...

Abstract: An approach is presented for simulating a time history that has time-average moments in exact agreement with those for a perfect Gaussian process. A nonlinear transformation is used to obtain the improved Gaussian simulation ...

Abstract: The mean and the variance are investigated for the maximum absolute value of a nonstationary process that represents the response buildup of a linear oscillator. The mean and variance are computed both by simulation and ...