The rapid development of modern science,technology,and industrialization has promoted the birth of more large and complex engineering structures.When the finite element(FE)method is used for dynamic analysis of these ...The rapid development of modern science,technology,and industrialization has promoted the birth of more large and complex engineering structures.When the finite element(FE)method is used for dynamic analysis of these structures,such as high-rise buildings,aircraft,and ships,the structural FE models often contain millions of degrees of freedom.This will lead to great hardware and computing costs,which is often unacceptable in the engineering field.Therefore,many FE model reduction technologies have been developed,among which dynamic condensation and component mode synthesis are the most widely used methods.This paper reviews the historical processes and general theoretical framework of these two main categories of FE model reduction technologies and briefly summarizes the latest applications of these methods in the engineering field.Current bottlenecks in dynamic condensation and component mode synthesis methods,as well as solutions found in literature,are also briefly discussed.Finally,this paper gives a conclusion and brief prospects for future research.This review aims to comprehensively introduce the two most widely used methods of FE model reduction technologies and hopes to provide suggestions and guidance for developing new model reduction technologies.展开更多
基金supported by grants from the National Natural Science Foundation of China(Grant No.11802069)China Postdoctoral Science Foundation(No.3236310534)Heilongjiang Provincial Postdoctoral Science Foun-dation(No.002020830603).
文摘The rapid development of modern science,technology,and industrialization has promoted the birth of more large and complex engineering structures.When the finite element(FE)method is used for dynamic analysis of these structures,such as high-rise buildings,aircraft,and ships,the structural FE models often contain millions of degrees of freedom.This will lead to great hardware and computing costs,which is often unacceptable in the engineering field.Therefore,many FE model reduction technologies have been developed,among which dynamic condensation and component mode synthesis are the most widely used methods.This paper reviews the historical processes and general theoretical framework of these two main categories of FE model reduction technologies and briefly summarizes the latest applications of these methods in the engineering field.Current bottlenecks in dynamic condensation and component mode synthesis methods,as well as solutions found in literature,are also briefly discussed.Finally,this paper gives a conclusion and brief prospects for future research.This review aims to comprehensively introduce the two most widely used methods of FE model reduction technologies and hopes to provide suggestions and guidance for developing new model reduction technologies.
