吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊2): 246-249.

• paper • Previous Articles     Next Articles

Structural reanalysis algorithm study of topological modifications based on even lines Epsilon accelerated method

XU Tao1, QIU Bing1, CHENG Fei1, JIN Yan-zhong2, JIANG Yong-zhou1,2, ZHAO Shi-jia1   

  1. 1. College of Mechanical Science and Engineering, Jilin University, Changchun, 130022, China;
    2. Aviation Theory Department, Aviation University of Air Force, Changchun 130022, China
  • Received:2011-03-30 Online:2011-09-30 Published:2011-09-30

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Abstract:

A new method for structural static reanalysis of topological modifications is presented.The proposed procedure is easy to implement and suit for the case of topological modifications.First,the newly added degrees of freedom are assumed to be linked to the original DOFs of the modified structure by means of the Guyan reduction so as to obtain the condensed equation.Second,the displacements of the original DOFs of the modified structure are solved using the even lines Epsilon accelerated method.And the displacements of the newly added DOFs resulting from topological modification can be recovered.In order to illustrate the application of the present method,the present method is applied to a numerical example.The numerical results show the exactitude and effectiveness of the presented reanalysis algorithm.

Key words: solid-state mechanics, topological modifications, structural reanalysis, Epsilon algorithm, finite element syste

CLC Number: 

  • O302


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