On the dynamics of elastic strips

A. Goriely, M. Nizette, M. Tabor

Research output: Contribution to journalArticle

48 Scopus citations

Abstract

The dynamics of elastic strips, i.e., long thin rods with noncircular cross section, is analyzed by studying the solutions of the appropriate Kirchhoff equations. First, it is shown that if a naturally straight strip is deformed into a helix, the only equilibrium helical configurations are those with no internal twist and whose principal bending direction is either along the normal or the binormal. Second, the linear stability of a straight twisted strip under tension is analyzed, showing the possibility of both pitchfork and Hopf bifurcations depending on the external and geometric constraints. Third, nonlinear amplitude equations are derived describing the dynamics close to the different bifurcation regimes. Finally, special analytical solutions to these equations are used to describe the buckling of strips. In particular, finite-length solutions with a variety of boundary conditions are considered.

Original languageEnglish (US)
Pages (from-to)3-45
Number of pages43
JournalJournal of Nonlinear Science
Volume11
Issue number1
DOIs
StatePublished - Jan 1 2001

Keywords

  • Amplitude equations
  • Elastic strips
  • Localized solutions

ASJC Scopus subject areas

  • Modeling and Simulation
  • Engineering(all)
  • Applied Mathematics

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