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Title: A procedure for predicting the fatigue damage of structural members in unsteady winds

Abstract

The practice of assuming full, steady state, vortex-induced-vibration response, to wind is excessively conservative. This paper presents a practical method for estimating the reduction of the fatigue damage rate due to the natural unsteady fluctuations in wind speed. Two dimensionless parameters are shown to be particularly important. The first is the ratio of the lock-in bandwidth to the turbulence intensity level of the wind. The second is the ratio of the length of time the wind speed remains in the lock-in interval to the rise time of the member to steady state response levels. The paper also shows that one must account for the discrete nature of wind speed and direction scatter diagrams in estimating the probability of occurrence of the critical wind speed.

Authors:
 [1]; ; ;
  1. Massachusetts Inst. of Tech., Cambridge, MA (United States)
Publication Date:
Sponsoring Org.:
American Petroleum Inst., Washington, DC (United States)
OSTI Identifier:
433940
Report Number(s):
CONF-960525-
TRN: IM9709%%374
Resource Type:
Book
Resource Relation:
Conference: 28. offshore technology conference, Houston, TX (United States), 6-9 May 1996; Other Information: PBD: 1996; Related Information: Is Part Of 28. annual offshore technology conference: Proceedings. Volume 2: Platform and marine system design; PB: 947 p.
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; OFFSHORE PLATFORMS; WIND LOADS; FORECASTING; MECHANICAL STRUCTURES; UNSTEADY FLOW; FATIGUE; CALCULATION METHODS; SERVICE LIFE; COMPILED DATA; TURBULENCE

Citation Formats

Vandiver, J K, Fei, C Y, Campbell, R B, and Rudge, D. A procedure for predicting the fatigue damage of structural members in unsteady winds. United States: N. p., 1996. Web.
Vandiver, J K, Fei, C Y, Campbell, R B, & Rudge, D. A procedure for predicting the fatigue damage of structural members in unsteady winds. United States.
Vandiver, J K, Fei, C Y, Campbell, R B, and Rudge, D. 1996. "A procedure for predicting the fatigue damage of structural members in unsteady winds". United States.
@article{osti_433940,
title = {A procedure for predicting the fatigue damage of structural members in unsteady winds},
author = {Vandiver, J K and Fei, C Y and Campbell, R B and Rudge, D},
abstractNote = {The practice of assuming full, steady state, vortex-induced-vibration response, to wind is excessively conservative. This paper presents a practical method for estimating the reduction of the fatigue damage rate due to the natural unsteady fluctuations in wind speed. Two dimensionless parameters are shown to be particularly important. The first is the ratio of the lock-in bandwidth to the turbulence intensity level of the wind. The second is the ratio of the length of time the wind speed remains in the lock-in interval to the rise time of the member to steady state response levels. The paper also shows that one must account for the discrete nature of wind speed and direction scatter diagrams in estimating the probability of occurrence of the critical wind speed.},
doi = {},
url = {https://www.osti.gov/biblio/433940}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}

Book:
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