Enhanced, Unconditionally Stable, Explicit Pseudodynamic Algorithm

In performing a pseudodynamic test, an explicit method is usually preferred over an implicit method as it involves no iteration procedure or extra hardware often needed for an implicit method. However, its integration time step is usually limited by stability. Hence, it is very promising for the pseudodynamic testing if an explicit method can have unconditional stability, which might eliminate the limitation on time step for the testing of a multiple degree of freedom system or a substructure system. Although an explicit pseudodynamic algorithm with unconditional stability has been successfully implemented and its superior characteristics identified, an enhanced unconditionally stable explicit pseudodynamic algorithm is further proposed. In this study, it is verified that both explicit pseudodynamic algorithms possess the same numerical characteristics in the step-by-step integration. However, the newly developed explicit pseudodynamic algorithm shows better error propagation properties when compared to that developed previously.

  • Availability:
  • Supplemental Notes:
    • Abstract reprinted with permission from ASCE
  • Authors:
    • Chang, Shuenn-Yih
  • Publication Date: 2007-5

Language

  • English

Media Info

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Filing Info

  • Accession Number: 01049809
  • Record Type: Publication
  • Files: TRIS
  • Created Date: May 16 2007 4:27PM