Earthquakes and Structures

  • 제17권1호
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  • Pages.101-113
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  • 2019
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  • 2092-7614(pISSN)
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  • 2092-7622(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

A substructure formulation for the earthquake -induced nonlinear structural pounding problem

  • Shi, Jianye (Institute of General Mechanics, RWTH Aachen University) ;
  • Bamer, Franz (Institute of General Mechanics, RWTH Aachen University) ;
  • Markert, Bernd (Institute of General Mechanics, RWTH Aachen University)
  • 투고 : 2018.06.12
  • 심사 : 2019.06.15
  • 발행 : 2019.07.25
⟨ 이전 논문 다음 논문 ⟩

초록

Earthquake-induced pounding is one of the major reasons for structural failure in earthquake prone cities. An accurate description of the pounding phenomenon of two buildings requires the consideration of systems with a large number of degrees of freedom including adequate contact impact formulations. In this paper, firstly, a node to surface formulation for the realization of state-of-the-art pounding models for structural beam elements is presented. Secondly, a hierarchical substructure technique is introduced, which is adapted to the structural pounding problem. The numerical accuracy and efficiency of the method, especially for the contact forces, are verified on an academic example, applying four different impact elements. Error estimations are carried out and compared with the classical modal truncation method. It is demonstrated that the hierarchical substructure method is indeed able to significantly speed up the numeric integration procedure by preserving a required level of accuracy.

키워드

참고문헌

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