For over a hundred years, analysts have been concerned with
the static and dynamic behavior of flexible cables. Hanging,
towing and mooring cables have been extensively examined but little
work has been done in the area of the anchor deployment problem. In
the anchor deployment problem, a mooring line is...
The exact frequencies and mode shapes of flexural vibration of a
rotating beam are found. The beam has a linear mass and stiffness
distribution.
With certain simplifying assumptions, the kinetic and potential
energies of the rotating beam are found. Hamilton's principle is then
used to determine the equation governing the...
Beginning with the basic equations from the theory of elasticity
and employing a model of crack propagation based on the concept of
a constant plastic energy absorption per unti of crack extension, the
commonly accepted power law of fatigue crack propagation was derived.
This derivation uses an extension of the...
The anchor-last mooring procedure is investigated in order to determine the transient forces in the mooring line and the velocities of the anchor. Transient forces were determined and the results showed that no severe snap loads occurred for the cases investigated. In addition, it was found that the vertical velocity...
A time domain simulation model which approximates the
three-dimensional velocity fluctuations of wind turbulence
has been developed. This model is used in a discrete time
control algorithm to regulate the output torque of a wind
turbine by changing the pitch angle of the turbine blade.
The wind model provides a...
Published January 1955. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
A numerical calculation procedure for the hydrodynamic interference effects between large multiple structures interacting with
linear ocean waves is presented in this study. Viscous effects are
neglected and the hydrodynamic pressure forces are assumed to be
inertially dominated. A finite element method which incorporates
radiation boundary dampers is adopted to...
