TY - GEN
T1 - Influence of righting moment curve on parametric roll motion in regular longitudinal waves
AU - Pesman, E.
AU - Taylan, M.
PY - 2012
Y1 - 2012
N2 - Parametric roll is a phenomenon which typically occurs in longitudinal waves. Although its theoretical existence has been known for decades, parametric roll attracted a great deal of interest in recent years. Stability accidents result from parametric roll make the topic more important because of the potential risks to money and human lives. In the present study, parametrically excited roll motion is modeled as a single degree of freedom system incorporating heave and pitch effects by means of restoring moment variations. The nonlinear roll model is solved by the averaging technique to avoid viable correlation between the responses and area under restoring moment curves. Nonlinear effects like discontinuous bifurcations were also introduced into the results. As a result, risk free regions, risky regions, risky regions due to discontinue bifurcations and extremely risky regions were determined.
AB - Parametric roll is a phenomenon which typically occurs in longitudinal waves. Although its theoretical existence has been known for decades, parametric roll attracted a great deal of interest in recent years. Stability accidents result from parametric roll make the topic more important because of the potential risks to money and human lives. In the present study, parametrically excited roll motion is modeled as a single degree of freedom system incorporating heave and pitch effects by means of restoring moment variations. The nonlinear roll model is solved by the averaging technique to avoid viable correlation between the responses and area under restoring moment curves. Nonlinear effects like discontinuous bifurcations were also introduced into the results. As a result, risk free regions, risky regions, risky regions due to discontinue bifurcations and extremely risky regions were determined.
UR - https://www.scopus.com/pages/publications/84896840924
M3 - Conference contribution
AN - SCOPUS:84896840924
SN - 9780415620826
T3 - Sustainable Maritime Transportation and Exploitation of Sea Resources - Proceedings of the 14th International Congress of the International Maritime Association of the Mediterranean, IMAM 2011
SP - 135
EP - 141
BT - Sustainable Maritime Transportation and Exploitation of Sea Resources - Proceedings of the 14th International Congress of the International Maritime Association of the Mediterranean, IMAM 2011
T2 - 14th International Congress of the International Maritime Association of the Mediterranean, IMAM 2011
Y2 - 13 September 2011 through 16 September 2011
ER -