HoOK

Offshore Operations with Cranes

supported by

BMWi -  Federal Ministry for Economic Affairs and Energy

Partners

Mareval AG, HeavyLift@Sea GmbH, TUHH

Duration

01.04.2013 - 31.03.2016

About 2000 wind turbines per year shall be installed and commissioned in the German North Sea by the year 2020. The construction of these facilities place special demands on the installation vessels. In order to address the specific aspects of crane operations in the offshore wind market, we develop a software tool for the design of crane ships, planning, and safety analysis of offshore crane operations. The tool is integrated in the ship design platform E4. By using this optimized product development tool, engineering offices and shipyards from Germany will be able to configure, develop and build innovative heavy-lift vessels and crane ships. Within the research project we develop numerical tools and methods which will enable the assessment of complex crane operations at sea under adverse environmental conditions. There is a lack of essential design principles for these vessel, because the successful planning of crane operations is a key element in the offshore segment. These fundamentals can be created using the developed methods, and thus it is possible to be able to include these aspects in the design of vessels. click here for further information.

For more detailed information please get in touch with one of the contact persons: Hannes Hatecke, Adele Lübcke

Publications

The following publications have been written during the research project:

[56733]
Title: Robust Identification of Parametric Radiation Force Models via Impulse Response Fitting.
Written by: Hannes Hatecke, Stefan Krüger
in: <em>PAMM - Proceedings in Applied Mathematics and Mechanics</em>. (2015).
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[pdf]

Note: HOOK

Abstract: This paper presents a new identification method for obtaining parametric state-space models for radiation force computation. These state-space models can substitute the convolution integral in the equations of motion based on the impulse response function method. Thus, the method converts the integro-differential equation to an ordinary differential equation which reduces the computational effort of radiation force computation significantly. The identification is performed in time-domain which means that the retardation function is subject to fit. The method is verified by the application to a floating cylinder.