简介:Theobjectiveofthisworkistoanalyzethefatiguereliabilityofcomplexweldedstructurescomposedofmultipleweb-framejoints,accountingforcorrelationeffects.Athree-dimensionalfiniteelementmodelusingthe20-nodesolidelementsisgenerated.Alinearelasticfiniteelementanalysiswasperformed,hotspotstressesinaweb-framejointwereanalyzedandfatiguedamagewasquantifiedemployingtheS-Napproach.Thestatisticaldescriptorsofthefatiguelifeofanon-correlatedweb-framejointcontainingseveralcriticalhotspotswereestimated.Thefatiguereliabilityofaweb-framejointwasmodeledasaseriessystemofcorrelatedcomponentsusingtheDitlevsenbounds.Thefatiguereliabilityoftheentireweldedstructurewithmultipleweb-framejoints,modeledasaparallelsystemofnon-correlatedweb-framejointswasalsocalculated.
简介:中国海运南美控股有限公司3月28日在巴西圣保罗成立。此举意味着该公司的全球战略得到进一步发展。中国海运集团总公司(中海运)董事长许立荣在庆典仪式上说,中海南美控股有限公司是中海运在海外成立的第七家控股有限公司,业务范围将覆盖整个南美洲,