Untersuchungen zum Festigkeitsverhalten von ebenen versteiften Plattenfeldern mit zunehmender Auslastung der Struktur Abschlussbericht

The most important structural components of a ship's hull are plane stiffened panels. They are stressed by global and local in-plane loads and -typically for ship structures - by lateral loads induced by the surrounding water or tank fillings. The panels must be designed with a sufficient safety margin because a local failure may lead to heavy damages or even to a global collapse. On the other hand overdimensioning should be avoided in order to limit building expenses and steel weight. This results in lower deadweight and consequently in a reduced efficiency of the ship. This project deals with the investigation on the strength behaviour of typical ship sructure panels under biaxial in-plane compression and lateral loads. This load combination is typical for large areas of ship structures, particularly for the shell and tank walls. As no experimental and theoretical results for such geometry and load combinations were available the above mentioned rules for steel constructions may not be considered as adequate in ship design. The report includes the results of four model tests in which the forces were increased until collapse of the structure. The models were built in a scale of about 1:2 regarding large cargo vessels. For small vessels the models even comply with the scale 1:1. Results of nonlinear finite element calculations in the varying load combinations are also presented. The theoretical and experimental results were used to derive fundamentals for the assessment of the strength behaviour of real typical stiffened ship panels under extreme and normal loads. It is recommended to introduce basic parts of the DIN 18800 in a modified form into the shipbuilding rules. Summing up it can be said that the assessment of ultimate loads for stiffened panels under combined loads is not possible with increased accuracy. By matching the required safety margin, stiffened panels can be designed with a minimum of steel weight which will be more economical in production and service. (orig.)SIGLEAvailable from TIB Hannover: F95B529+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

Life Cycle Design. Versagensverhalten versteifter Plattenfelder unter schiffstypischer Extrembelastung Abschlussbericht

SIGLEAvailable from TIB Hannover: RR 6875(98180)+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekBundesministerium fuer Bildung, Wissenschaft, Forschung und Technologie, Bonn (Germany)DEGerman

WIPS - Wettbewerbsvorteile durch informationstechnisch unterstuetzte Produktsimulation im Schiffbau. Kollisionsberechnung in schiffbaulichen Entwurfssystemen Abschlussbericht

Available from TIB Hannover: F03B434+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEBundesministerium fuer Bildung und Forschung, Berlin (Germany)DEGerman

Lukendeckel-Verschiebungen im Seegang

SIGLETIB Hannover: RA 2207(219) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman