Numerical characteristics of a simple finite element formulation for consolidation analysis

Guofu Zhu, Jianhua Yin, Shun Tim Luk

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

The spatial oscillation of values in the consolidation analysis when using small time increments has been a common problem for most existing methods. In this paper, the numerical characteristics of a simple finite element formulation for I-D consolidation analysis recently proposed by the authors have been examined in detail. This paper proves that the commonly encountered phenomenon of spatial oscillation due to small time increments does not occur in the simple finite element formulation. The criterion of minimum time step used in most existing methods can be eliminated at least for linear situations by using the simple formulation proposed by the authors. Thus, the consolidation analysis can be carried easily for many situations, such as the one involving a relatively impermeable clay layer sandwiched between sandy layers.
Original languageEnglish
Pages (from-to)767-775
Number of pages9
JournalCommunications in Numerical Methods in Engineering
Volume20
Issue number10
DOIs
Publication statusPublished - 1 Oct 2004

Keywords

  • Consolidation
  • Finite element
  • Numerical stability
  • Porewater pressure
  • Spatial oscillation
  • Time increment

ASJC Scopus subject areas

  • Engineering (miscellaneous)
  • Applied Mathematics
  • Computational Mechanics

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