Stress cycle variations reduce the design life of a floating-pendulum wave-energy converter subjected to wave loads. The action of repeated loading could lead to significant fatigue damage. To ensure that the structures will fulfill their intended function, fatigue assessment should be performed for each structural detail that is subjected to extensive dynamic loading. In the present study, a preliminary fatigue assessment study using stochastic spectral analysis on structures predicts whether the structure is likely to suffer fatigue failure. Finite-element analysis in the frequency domain produces element stress transfer functions that are used in fatigue damage calculation. The long-term stress distribution is also obtained based on the wave-scatter diagram. Important insights obtained from the present study are documented.
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The Twenty-fifth International Ocean and Polar Engineering Conference
June 21–26, 2015
Kona, Hawaii, USA
ISBN:
978-1-880653-89-0
Preliminary Study on Global Spectral Analysis of Floating Pendulum Wave Energy Converter
Jung Min Sohn;
Jung Min Sohn
Korea Research Institute of Ships & Ocean Engineering
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Ho Jeong Cheon;
Ho Jeong Cheon
Korea Research Institute of Ships & Ocean Engineering
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Seung Ho Shin;
Seung Ho Shin
Korea Research Institute of Ships & Ocean Engineering
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Keyyong Hong
Keyyong Hong
Korea Research Institute of Ships & Ocean Engineering
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Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, Kona, Hawaii, USA, June 2015.
Paper Number:
ISOPE-I-15-684
Published:
June 21 2015
Citation
Sohn, Jung Min, Cheon, Ho Jeong, Shin, Seung Ho, and Keyyong Hong. "Preliminary Study on Global Spectral Analysis of Floating Pendulum Wave Energy Converter." Paper presented at the The Twenty-fifth International Ocean and Polar Engineering Conference, Kona, Hawaii, USA, June 2015.
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