Substructuring approach to the calculation of higher-order eigensensitivity

Shun Weng, Hong Ping Zhu, Yong Xia, Xiao Qing Zhou, Ling Mao

Research output: Journal article publicationJournal articleAcademic researchpeer-review

23 Citations (Scopus)

Abstract

Calculation of eigensensitivity is usually time-consuming for a large-scale structure. This paper develops a substructuring method for computing the first, second and high order eigensensitivity. The local area of a structure is treated as an independent substructure to be analyzed. The eigensensitivity of global structure with respect to a design parameter is calculated from the eigensensitivity of a particular substructure that contains the design parameter, thus allowing a significant reduction in computational cost. The accuracy and efficiency of the substructuring method is proved by a frame structure and a highway bridge.
Original languageEnglish
Pages (from-to)23-33
Number of pages11
JournalComputers and Structures
Volume117
DOIs
Publication statusPublished - 16 Jan 2013

Keywords

  • Eigensensitivity
  • Eigensolution derivative
  • Residual flexibility
  • Substructuring method

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Modelling and Simulation
  • Materials Science(all)
  • Mechanical Engineering
  • Computer Science Applications

Cite this