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“Ease of Use”

GL ShipLoad opens up new opportunities for yards and design offices. nonstop asked Doehyun Kim, Senior Engineer at Korean Hyundai Heavy Industries, about his experiences with the software tool

USER. Doehyun Kim, naval architect at HHI.

H igh performance in an easy-to-use application: GL ShipLoad opens up new opportunities for yards and design offices in helping them analyse the structural design of ships to understand and impro- ve their strength properties. Developed by Germanischer Lloyd, GL ShipLoad is an efficient load generation soft- ware that enables global FE analyses of ship structures. The tool models the mass distribution of ship and cargo and computes static and hydrodynamic pressures indu- ced by waves.

FE MODEL. Global FE strength analysis for a 13,000-TEU containership.

A convenient mechanism for defining selection crite- ria allows the user to specify the design waves to be used for the global strength analysis. The software generates a small number of balanced load cases that are sufficient for dimensioning the hull structure. Version 2.0, released in March 2009, allows the user to incorporate slamming loa- ds and features the automatic selection of load cases. In this interview, Doehyun Kim, Senior Engineer at Hyundai Heavy Industries describes how the application supports his daily work.

HULL DEFORMATION. Typical results of load computations that defines wave loads causing maximum vertical bending.

nonstop: When did you begin using GL ShipLoad? Doe-Hyun Kim: We began working with GL ShipLoad some time during the first half of 2007. nonstop: How many ships of your fleet have you calculated with GL ShipLoad? Kim: To date, we have used GL ShipLoad to calculate 4 dif- ferent prototypes for a total number of around 20 ships. nonstop: Could you tell us the ship sizes? Kim: All four ship types were container carriers designed for 8,200 TEU, 10,000 TEU, 11,300 TEU and 13,100 TEU, re- spectively. nonstop: How does GL ShipLoad help you in your daily work, and what are the most important benefits of the soft- ware for you? Kim: What sets GL ShipLoad apart is the ease of use, es- pecially when calculating hydrodynamic loads. Even de- signers without any relevant background can easily un- derstand the software and work with it. In other words, a hull structural designer can do the entire analysis by himself, without needing help from a hydrodynamics specialist. nonstop: How do you rate GL ShipLoad in comparison to competing products? Kim: The approach GL ShipLoad takes is fundamentally different from other products, so it is difficult to answer this question. What can be said is that the graphical user interface (GUI) and user-friendliness of GL ShipLoad are among the superior features of this application. On the other hand, when it comes to convenient data accessibility

ENFORCED ROLL. Hull deformation for the ship under maximum torsion and 16.0 degrees.

and RAO prediction features, the product could be develo- ped further. nonstop: Do you have any other suggestions for improve- ment? Kim: Actually, the new auto load-case selection feature added in GL ShipLoad Version 2.0 is a highly welcome improvement. It will help us considerably because it elimi- nates a major cause of concern for us.

We would also suggest a sub-model feature to allow the transfer of local loads and boundary displacement from a global model to a local model. nonstop: How would you describe your relationship with GL? Kim: Putting it into a nutshell, we have a common interest: building sound ships. nonstop: Do you use GL ShipLoad for ships not classed GL? Kim: We do in some cases, because the analysis procedure

of GL ShipLoad is quite tangible and easy.

  • SG

For further information: Dr Jörg Rörup, Analysis of Hull Structures & Damages, Phone: +49 40 36149-7400, E-Mail: joerg.roerup@gl-group.com; Dr Christian Cabos, Head of Department CAE Development, Phone: +49 40 36149-576, E-Mail: christian.cabos@gl-group.com


nonstop 02/2009

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