典型文献
Evaluation of the Residual Capacity of a Submarine for Different Limit States with Various Initial Imperfection Models
文献摘要：
The current design philosophy for submarine hulls,in the preliminary design stage,generally considers as governing limit states material yielding along with various buckling modes.It is common belief that,beyond the design pressure,material yielding of the shell plating should occur first,eventually followed by local buckling,while global buckling currently retains the highest safety factor.On the other hand,in the aeronautical field,in some cases structural components are designed in such a way that local instability may occur within the design loads,being the phenomena inside the material elastic range and not leading to a significant drop in term of stiffness.This paper is aimed at investigating the structural response beyond a set of selected limit states,using nonlinear FE method adopting different initial imperfection models,to provide the designers with new information useful for calibrating safety factors.It was found that both local and global buckling can be considered as ultimate limit states,with a significant sensitivity towards initial imperfection,while material yielding and tripping buckling of frames show a residual structural capacity.In conclusion,it was found that the occurrence of local buckling leads to similar sudden catastrophic consequences as global buckling,with the ultimate strength capacity highly affected by the initial imperfection shape and amplitude.
文献关键词：
中图分类号：
作者姓名：
Tatiana Pais;Marco Gaiotti;Beatrice Barsotti
作者机构：
University of Genova,Polytechnic School,DITEN via Montallegro,1,16145 Genova,Italy
文献出处：
引用格式：
[1]Tatiana Pais;Marco Gaiotti;Beatrice Barsotti-.Evaluation of the Residual Capacity of a Submarine for Different Limit States with Various Initial Imperfection Models)[J].哈尔滨工程大学学报（英文版）,2022(02):59-68
A类：
Imperfection
B类：
Evaluation,Residual,Capacity,Submarine,Different,Limit,States,Various,Initial,Models,philosophy,submarine,hulls,preliminary,stage,generally,considers,governing,limit,states,material,yielding,along,various,buckling,modes,It,common,belief,that,beyond,pressure,shell,plating,should,first,eventually,followed,by,local,while,global,currently,retains,highest,safety,On,other,hand,aeronautical,field,some,cases,structural,components,are,designed,such,way,instability,may,within,loads,being,phenomena,inside,elastic,range,not,leading,significant,drop,term,stiffness,This,paper,aimed,investigating,response,set,selected,using,nonlinear,FE,method,adopting,different,initial,imperfection,models,provide,designers,new,information,useful,calibrating,factors,was,found,both,considered,ultimate,sensitivity,towards,tripping,frames,show,residual,capacity,conclusion,occurrence,leads,similar,sudden,catastrophic,consequences,strength,highly,affected,shape,amplitude
AB值：
0.618893
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