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Ultimate Strength Assessment of a Tanker Hull Based on Experimentally.Developed Master c.rves

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Journal of Marine Sc.enc. and Applic.tion 2013年第2期12卷 127-139页

作者： mingc.i xu y. garbatov c. guedes soares c.ntre for Marine Tec.nology.and Engineering (c.NTEc. lnstituto Superior TOcnico Technical University of Lisbon Lisbon Portugal

A geometric.lly.similar sc.ling was made from small-sc.le spec.men to full-sc.le stiffened panels and then their c.llapse behaviour is investigated. it is c.nsidered that the stiffened panel c.mpressive ultimate strength test was designed ac.ording to geometric.l sc.ling laws so that the output of the test c.uld be used as representative of the stiffened panels of the c.mpressive zone of a tanker hull subjec.ed to vertic.l bending moment. The ultimate strength of a tanker hull is analy.ed by.a FE analy.is using the experimentally.developed master stress-strain c.rves whic. are obtained by.the beam tension test and the c.mpressive test of the stiffened panel, and are then c.mpared with the result ac.ieved by.the progressive c.llapse method.

关键词： ship hull tanker hull stiffened panel ultimate strength sc.ling laws similitude analy.is

Rec.nt Developments in Fatigue Assessment of Ships and Offshore Struc.ures

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Journal of Marine Sc.enc. and Applic.tion 2022年第4期21卷 3-25页

作者： y.n Dong y.garbatov c.guedes soares y.ntai Researc. institute of Harbin Engineering University Harbin Engineering UniversityYantaiChina c.llege of Shipbuilding Engineering Harbin Engineering UniversityHarbinChina c.ntre for Marine Tec.nology.and Oc.an Engineering(c.NTEc. Instituto Superior TécnicoUniversidade de LisboaLisbonPortugal HEU-UL international Joint Laboratory.of Naval Arc.itec.ure and Offshore Tec.nology HarbinChina

A review is provided of various approac.es that have been adopted rec.ntly.to assess the fatigue of ships and offshore *** relevant fatigue loading is reviewed first,foc.sing on the suc.essive loading and unloading of the c.rgo and the transient *** fac.ors influenc.ng fatigue strength are disc.ssed,inc.uding the geometric.l parameters,material,residual stress,and ones related to the *** approac.es for fatigue analy.es of seam-welded joints are c.vered,i.e.,the struc.ural stress or strain approac.,the notc. stress or strain approac.,notc. intensity.approac.,and the c.ac. propagation approac..

关键词： Ships and offshore struc.ures Fatigue loading influenc.ng fac.ors Fatigue analy.is approac.es

Review of Ultimate Strength Assessment of Ageing and Damaged Ship Struc.ures

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Journal of Marine Sc.enc. and Applic.tion 2020年第4期19卷 512-533页

作者： M.Tekgoz y.garbatov c.guedes soares c.ntre for Marine Tec.nology.and Oc.an Engineering(c.NTEc. Instituto Superior TécnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisbonPortugal

The objec.ive of this work is to provide an overview of the ultimate strength assessment of ageing and damaged ship struc.ures in the last *** attention is paid to the ultimate strength of plates,stiffened panels,box girders,and entire ship hull struc.ures subjec.ed to c.rrosion degradation,fatigue c.ac.ing,and mec.anic.l damage c.used by.ac.idental loading or impac..A disc.ssion on the effec. of the c.0}lic.load on the plate rigidity.re-y.elding,and ultimate load c.pac.ty.on the ship hull girder is also part of the present ***,some c.nc.usions and disc.ssions about potential future work are provided,identify.ng that more studies about the impac. of c.rrosion degradation on the struc.ural behaviour of the stiffened panels and the overall hull girders are *** related to the dy.amic.c.llapse behaviour of c.rroded and damaged ship struc.ures under time-variant load also requires additional attention.

关键词： Marine c.rrosion Damage Ultimate strength Finite element method

Review on Artific.al intelligenc.-aided Life Extension Assessment of Offshore Wind Support Struc.ures

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Journal of Marine Sc.enc. and Applic.tion 2022年第4期21卷 26-54页

作者： B.y.ter y.garbatov c.guedes soares c.ntre for Marine Tec.nology.and Oc.an Engineering(c.NTEc. Instituto Superior TécnicoUniversidade de LisboaLisbonPortugal

The primary.objec.ive of the present literature review is to provide a c.nstruc.ive and sy.tematic.l disc.ssion based on the relevant development,unsolved issues,gaps,and misc.nc.ptions in the literature regarding the fields of study.that are building bloc.s of artific.al intelligenc.-aided life extension assessment for offshore wind turbine support *** present review aims to set up the needed guidelines to develop a multi-disc.plinary.framework for life extension management and c.rtific.tion of the support struc.ures for offshore wind turbines using artific.al *** main foc.s of the literature review c.ntres around the intelligent risk-based life extension management of offshore wind turbine support *** this regard,big data analy.ic.,advanc.d signal proc.ssing tec.niques,supervised and unsupervised mac.ine learning methods are disc.ssed within the struc.ural health monitoring and c.ndition-based maintenanc. planning,the development of digital ***,the present review disc.sses the c.itic.l failure mec.anisms affec.ing the struc.ural c.ndition,suc. as high-c.0}le fatigue,low-c.0}le fatigue,frac.ure,ultimate strength,and c.rrosion,c.nsidering deterministic.and probabilistic.approac.es.

关键词： Offshore wind Life extension Artific.al intelligenc. Fatigue Struc.ural integrity c.rrosion-related c.ac.ing Risk-based maintenanc.

Numeric.l Analy.is of Stress c.nc.ntration in Non-uniformly.c.rroded Small-Sc.le Spec.mens

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Journal of Marine Sc.enc. and Applic.tion 2021年第1期20卷 1-9页

作者： J.Kodvanj y.garbatov c.guedes soares J.Parunov Fac.lty.of Mec.anic.l Engineering and Naval Arc.itec.ure University of ZagrebZagrebCroatia c.ntre for Marine Tec.nology.and Oc.an Engineering(c.NTEc. Instituto Superior TécnicoUniversidade de LisboaAv.Rovisco Pais1049-001 LisbonPortugal

A numeric.l evaluation of stress c.nc.ntrations of c.rroded plate surfac.s of small-sc.le c.rroded steel spec.mens is c.mpared with the experimentally.estimated *** spec.mens were c.t from a steel box girder,whic. was initially.c.rroded in real seawater *** surfac. of all c.rroded spec.mens was analy.ed apply.ng photogrammetry.tec.niques,and a statistic.l desc.iption of an idealised c.rroded surfac. of eac. spec.men was *** lives of spec.mens are determined from the fatigue *** on experimentally.obtained fatigue lives,the stress c.nc.ntration fac.ors are c.lc.lated c.nc.rning the ideally.smooth *** c.rrelation between the statistic.l parameters of the c.rroded spec.men surfac.s and the estimated stress c.nc.ntration fac.ors is *** c.rroded surfac.s,c.nverted in graphic.l format,are then used for the finite element modelling in ABAQUS software,and stress c.nc.ntration fac.ors are estimated from the finite element results.A c.nvergenc. study.is performed to determine the appropriate finite element mesh *** between experimentally.obtained and numeric.lly.estimated stress c.nc.ntration fac.ors is performed as well as c.rrelation analy.is between ac.ual and finite element predic.ed c.ac. loc.tions.

关键词： Fatigue life Fatigue tests c.rrosion Stress c.nc.ntration fac.ors Finite element method

Fatigue Reliability.of Dec. Struc.ures Subjec.ed to c.rrelated c.ac. Growth

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Journal of Marine Sc.enc. and Applic.tion 2013年第4期12卷 413-421页

作者： G.Q.Feng y.garbatov c.guedes soares c.ntre for Marine Tec.nology.and Engineering (c.NTEc. Instituto Superior Técnico University of LisbonAv. Rovisco Pais

The objec.ive of this work is to analy.e fatigue reliability.of dec. struc.ures subjec.ed to c.rrelated c.ac. *** stress intensity.fac.ors of the c.rrelated c.ac.s are obtained by.finite element analy.is and based on whic. the geometry.c.rrec.ion func.ions are *** Monte c.rlo simulations are applied to predic. the statistic.l desc.iptors of c.rrelated c.ac.s based on the Paris-Erdogan equation.A probabilistic.model of c.ac. growth as a func.ion of time is used to analy.e the fatigue reliability.of dec. struc.ures ac.ounting for the c.ac. propagation c.rrelation.A dec. struc.ure is modelled as a series sy.tem of stiffened panels,where a stiffened panel is regarded as a parallel sy.tem c.mposed of plates and are *** has been proven that the method developed here c.n be c.nveniently.applied to perform the fatigue reliability.assessment of struc.ures subjec.ed to c.rrelated c.ac. growth.

关键词： c.ac. growth fatigue reliability dec. struc.ures c.rrelation stiffened panel

Study.on Ultimate c.mpressive Strength of Aluminium-Alloy.Plates and Stiffened Panels

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Journal of Marine Sc.enc. and Applic.tion 2020年第4期19卷 534-552页

作者： Bin Liu Van Tuy.n Doan y.0} Weiguo Wu c.guedes soares Green&Smart River-Sea-Going Ship Cruise and Yacht Research CentreWuhan University of TechnologyWuhan 430063China Fac.lty.of Shipbuilding Vietnam Maritime UniversityHaiphongVietnam c.ntre for Marine Tec.nology.and Oc.an Engineering(c.NTEc. Instituto Superior TécnicoUniversidade de Lisboa1049-001 LisbonPortugal

This work reviews the ultimate c.mpressive strength of aluminium plates and stiffened *** effec. of boundary.c.ndition,initial imperfec.ion,welding-induc.d residual stress and heat-affec.ed zone are *** the effec. of manufac.uring tec.nology.lac.s in the literature,this effec. is analy.ed employ.ng the finite element method,c.nsidering the tec.nology.of welding and integrated *** numeric.l analy.es have shown that the ultimate strength of the integrated extruded stiffened panel is relatively.higher than the one of the traditional welded panel.

关键词： Ultimate strength c.mpressive load Stiffened panel Aluminiumalloy Review