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New lumped-mass-stick model based on modal characteristics of structures: development and application to a nuclear containment building

  • Hwasung Roh
  • Huseok Lee
  • Jong Seh LeeEmail author
Technical Paper

Abstract

In this study, a new lumped-mass-stick model (LMSM) is developed based on the modal characteristics of a structure such as eigenvalues and eigenvectors. The simplified model, named the “frequency adaptive lumped-massstick model,” hasonly a small number of stick elements and nodes to provide the same natural frequencies of the structure and is applied to a nuclear containment building. To investigate the numerical performance of the LMSM, a time history analysis is carried out on both the LMSM and the finite element model (FEM) for a nuclear containment building. A comparison of the results shows that the dynamic responses of the LMSM in terms of displacement and acceleration are almost identical to those of the FEM. In addition, the results in terms of fl oor response spectra at certain elevations are also in good agreement.

Keywords

new lumped-mass-stick model frequency adaptive nuclear containment buildings seismic response fl oor response spectrum 

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Copyright information

© Institute of Engineering Mechanics, China Earthquake Administration and Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.Department of Civil EngineeringChonbuk National UniversityJeonju, Jeollabuk-doSouth Korea
  2. 2.Department of Civil and Environmental EngineeringHanyang UniversityAnsan, Gyeonggi-doSouth Korea

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