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7 results on '"Palmquist, Mikael"'

3. On the influence of sea state idealizations and wave directionality in dynamic stability assessments

Author

Rosén, Anders, Björnsson, Lars, Palmquist, Mikael, and Ovegård, Erik

Subjects
Vehicle Engineering, Farkostteknik
Abstract

Simplified spectral based methods, concluded feasible for on-board analysis of dynamic stability limits in previous studies, are here adjusted for use in short crested seas and applied on a RORO ship using detailed forecast 2D wave spectra and corresponding idealized spectra. The general trend is that the idealized spectra result in over prediction of the probability of exceeding dynamic stability limits with a few exceptions resulting in under prediction. The results highlight the importance of proper representation of the wave environment in dynamic stability assessments. The results are discussed in the context of operational guidance and routing. QC 20150507

Published
2013

4. Operational Guidance with Respect to Pure Loss of Stability and Parametric Rolling

Author

Ovegård, Erik, Rosén, Anders, Palmquist, Mikael, Huss, Mikael, Ovegård, Erik, Rosén, Anders, Palmquist, Mikael, and Huss, Mikael

Abstract

This paper reviews two previously presented simplified methods for assessment of pure loss of stability and parametric rolling based on linear signal theory. The methods are evaluated in relation to full-scale incidents and time-domain simulations. Underlying assumptions and tuning of the critical levels in the simplified methods with reference to time-domain simulations is discussed. Given proper tuning the methods are concluded to provide a feasible basis for ship specific on-board operational guidance., QC 20130515

Published
2012

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