A deconvolution scheme for determination of seismic loads in finite-element analyses

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

This paper proposes a nonlinear time-domain finite-element method to generate three-direction seismic loads on the mesh boundary using the measured ground surface acceleration. The proposed scheme obtains correct earthquake responses around the major soil-structure interaction (SSI) region. The applied acceleration at the mesh bottom is first approximated as the measured acceleration on the soil surface. A time-domain finite-element analysis and a de convolution scheme are then performed to find the seismic acceleration at the mesh bottom. After several iterations, these acceleration data can be convergent to an acceptable accuracy. This paper also investigates the viscous and absorbing boundary methods to avoid fake reflection along the mesh boundary. The viscous boundary method is simple and can be applied to a standard finite-element code without difficulty; moreover, this scheme is also acceptably accurate, if appropriate damping is used in the interface layer. Thus, the viscous boundary method is suggested for use in the SSI analysis with the earthquake loading.

原文English
頁(從 - 到)258-267
頁數10
期刊Bulletin of the Seismological Society of America
103
發行號1
DOIs
出版狀態Published - 2013 二月 1

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Geochemistry and Petrology

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