Stability analysis of Euler's elastica ring using harmonic balance

TL;DR

This paper applies harmonic balance and bifurcation analysis to study the stability of elastic rings under various loads, providing accurate stability ranges and identifying unstable configurations.

Contribution

It introduces a combined harmonic balance and bifurcation approach for stability analysis of elastic rings, improving accuracy and stability range determination.

Findings

Harmonic balance yields smooth stability ranges for all modes.

Bifurcation analysis effectively identifies unstable regions.

Results agree well with traditional linearization methods.

Abstract

The stability analysis of elastic rings subjected to various loading conditions is examined, focusing on stable and unstable configurations. The harmonic balance method is employed to investigate the stability range under different loading conditions. This method provides improved accuracy in results and yields a smooth, stable range of values for all modes of symmetry. Additionally, the bifurcation analysis technique of linearization is utilized to identify unstable regions, and it demonstrates good agreement with the results obtained using the harmonic balance method.