TRANSACTIONS OF THE KRYLOV STATE RESEARCH CENTRE

Science journal

 
ISSN (print) 2542-2324 /(online) 2618-8244


Articles of The Transactions of KSRC








Strength of thick-sheeted welded structures of ships and marine structures in the Arctic



Full text article ( in russian)

Year

 
2017

Issue

 
380

Volume

 
2

Pages

 
32-41

Caption

 
Strength of thick-sheeted welded structures of ships and marine structures in the Arctic

Authors

 
Kryzhevich G.B.

Keywords

 
fractures, strength, Arctic, welded structures, marine structures, temperature conditions

Summary

 
Object and purpose of research.This paper studies thick-sheeted welded structures of marine technology operating at the temperatures of–40°С and lower. Current regulations of classification societies regarding fracture resistance of welded joints for these structures are usually impossible to meet for a number of technological and economic reasons, which, if regarded formalistically, might result in prohibition of operation at low temperatures. The purpose of this work is to develop an alternative approach to ensuring strength (cold resistance) of welded structures based on the newly-developed method of direct static strength calculation for welded structures, with consideration of really achievable fracture resistance and plasticity parameters of the welded joint material
Subject matter and methodsThe strength calculation method suggested in this paper implies FEM-based procedures in combination with strength verification methods for steel structures, as per the criteria of brittle failure and ultimate plastic straining.
Main results.The paper suggests a new verification calculation method for the static low-temperature strength of ship structures, and also suggests the alterations in the system of regulations regarding fracture resistance and strength at low temperatures for the thick-walled structures operating in the Arctic.
Conclusion.The method developed in this work will ensure trouble-free operation and operational safety of the structures applied aboard Arctic ships and marine structures. This method is the basis for the new technology that will allow development of structures at lower costs.

Rubrics

 
Naval architecture

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