Evaluating foundation mass, damping and stiffness by the least-squares method

研究成果: Article同行評審

9 引文 斯高帕斯(Scopus)

摘要

This paper discusses how to use the three-dimensional (3D) time-domain finite-element method incorporating the least-squares method to calculate the equivalent foundation mass, damping and stiffness matrices. Numerical simulations indicate that the accuracy of these equivalent matrices is acceptable when the applied harmonic force of 1+sine is used. Moreover, the accuracy of the least-squares method using the 1+sine force is not sensitive to the first time step for inclusion of data. Since the finite-element method can model problems flexibly, the equivalent mass, damping and stiffness matrices of very complicated soil profiles and foundations can be established without difficulty using this least-squares method.

原文English
頁(從 - 到)1431-1442
頁數12
期刊Earthquake Engineering and Structural Dynamics
32
發行號9
DOIs
出版狀態Published - 2003 七月 25

All Science Journal Classification (ASJC) codes

  • Geotechnical Engineering and Engineering Geology
  • Earth and Planetary Sciences (miscellaneous)

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