Nonlinear analysis of liquid-filled tank

Wing Kam Liu, Dennis Lam

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Recent developments related to the analysis and design of liquid storage tanks are surveyed. Different aspects of the problem are examined. Background for finite element formulation is also outlined. A numerical tank model which accounts for the lateral pressure loading is developed to provide an understanding of this effect on the behavior of liquid storage tanks. This lateral pressure loading is simulated via ah equivalent hydrostatic approach in which the follower force effect is accounted. Results show that the tank model collapses at a critical load 20% lower than the classical prediction. It also shows that the axial stress is basically dominated by cos 6 mode. Higher order modes, are significant in the hoop stress profile which is nonlinear in character. The observed "elephant-foot buckle" and the "ovalling" response of liquid storage tanks in many tank failures during earthquakes can be predicted with these nonlinear methodologies.

Original languageEnglish (US)
Pages (from-to)1344-1357
Number of pages14
JournalJournal Df Engineering Mechanics
Volume109
Issue number6
DOIs
StatePublished - Dec 1983

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

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