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A new stability and sensitivity design and diagnosis approach

  • Sari, Ali (Istanbul Technical University, Civil Engineering Department) ;
  • Korkmaz, Kasim A. (Eastern Michigan University, School of Visual and Built Environments)
  • Received : 2016.01.25
  • Accepted : 2017.02.21
  • Published : 2017.04.30

Abstract

In the stability and sensitivity design and diagnosis approaches, there are various methodologies available. Bond graph modeling by lumping technique is one of the universal methodologies in methodical analysis used by many researchers in all over the world. The accuracy of the method is validated in different arenas. Bond graphs are a concise, pictorial representation of the energy storage, dissipation and exchange mechanisms of interacting dynamic systems, subsystems and components. This paper proposes a bond graph modeling for distributed parameter systems using lumping techniques. Therefore, a steel frame structure was modeled to analyze employing bond graph modeling of distributed system using lumping technique. In the analytical part, the effectiveness of bond graphs to model this system is demonstrated. The dynamic responses of the system were computed and compared with those computed from the finite element analysis. The calculated maximum deflection time histories were found to be comparable. The sensitivity and the stability of the steel frame structure was also studied in different aspects. Thus, the proposed methodology, with its simplicity, can be used for stability and sensitivity analyses as alternative to finite element method for steel structures. The major value brought in the practical design is the simplicity of the proposed method for steel structures.

Keywords

bond graph modeling;lumping techniques;steel structures;stability;sensitivity

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