Research on super-element condensation method of aero-engine magazine structure dynamic model considering connections
YANG Zhe
ZHANG Baoqiang
TANG Zhenhuan
TANG Yong
FENG Wujun
LIN Haidong
WANG Siqi
LI Jinhui
Abstract：[Objective]Aiming at the low dynamic solution efficiency caused by the complex structure,numerous substructures and connections,and a large number of nodes in the finite element model of aero-engine magazine,a super-element condensation method for the dynamic model of magazine structure with connections was proposed to achieve efficient and accurate solution.[Methods]Firstly,a bolt-connected magazine was taken as the research object,and super-element substructures and residual structure were divided based on its physical connection structure.Secondly,external nodes on the connection surface were defined,and the super-element substructures were condensed to the connection surface of the residual structure.Then,each structure was assembled to obtain the condensed model.Finally,the effectiveness of the method was verified by a modal test using the hammering method.[Results]The modal solution time of the condensed model was reduced from 623 s to 21 s,the maximum error of the simulation frequency before and after condensation was 0.79%,and the average error compared with the test frequency was 0.35%,which greatly improved the computational efficiency while ensuring high modeling accuracy.
Keywords：Aero-engine magazineSuper-element condensationConnection structureFinite element modelSubstructure method
Publication Date：2026-02-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：6( 56-61 )