Consistent lumped‐parameter models for unbounded soil: Frequency‐independent stiffness, damping and mass matrices
作者:
John P. Wolf,
期刊:
Earthquake Engineering&Structural Dynamics
(WILEY Available online 1991)
卷期:
Volume 20,
issue 1
页码: 33-41
ISSN:0098-8847
年代: 1991
DOI:10.1002/eqe.4290200104
出版商: John Wiley&Sons, Ltd
数据来源: WILEY
摘要:
AbstractA systematic procedure to develop consistent (symmetric) stiffness, damping and mass matrices with real coefficients to represent any unbounded soil is developed. These property matrices are based on the lumped‐parameter models of Reference 1. Either stiffness and damping matrices corresponding to first‐order differential equations involving the internal degrees of freedom and those on the structure‐soil interface result or, alternatively, in addition mass matrices are introduced, corresponding to second‐order differential equations, which reduce the number of internal degrees of freedom by a factor 2.The stiffness, damping and mass matrices can easily be incorporated in a general‐purpose structural dynamics program working in the time domain, whereby the structure can even be n
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