Control of postbuckling mode transitions using assemblies of axially loaded bilaterally constrained beams

Wassim Borchani, Pengcheng Jiao, Rigoberto Burgueño, Nizar Lajnef

Research output: Contribution to journalArticle

  • 2 Citations

Abstract

Multistable structural members are extensively used in various fields, including microelectromechanical systems (MEMS) actuation, sensing, and energy harvesting. The multistable configuration of elements can be obtained through their elastic postbuckling response. Under quasi-static excitations, the snap-through transitions of buckled elements constitute a useful tool to generate high-rate excitations for piezoelectric transducers. Yet, more efficient energy harvesting and accurate sensing requires that buckling events happen at specific loading levels. This paper investigates the control of snap-through events by using beam assemblies. Multiple bilaterally constrained beams were arranged in parallel and subjected to axial displacement-controlled loading. Experimental studies show that snap-buckling transitions can be controlled by changing the geometry of the assembled beams. An analytical model was developed to investigate the effect of system parameters on its postbuckling response. Results show that transitions are mainly controlled by the beams' thicknesses and lengths. By tuning both parameters, the system can be designed to snap at a desired axial displacement. In this paper, the assemblies were designed to transition at equally spaced axial displacements. However, other displacement combinations can be achieved.

Original languageEnglish (US)
Article number04017116
JournalJournal of Engineering Mechanics
Volume143
Issue number10
DOIs
StatePublished - Oct 1 2017

Profile

Energy harvesting
Buckling
Piezoelectric transducers
Structural members
MEMS
Analytical models
Tuning
Geometry

Keywords

  • Beams
  • Buckling
  • Control
  • Snap-through

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Control of postbuckling mode transitions using assemblies of axially loaded bilaterally constrained beams. / Borchani, Wassim; Jiao, Pengcheng; Burgueño, Rigoberto; Lajnef, Nizar.

In: Journal of Engineering Mechanics, Vol. 143, No. 10, 04017116, 01.10.2017.

Research output: Contribution to journalArticle

Borchani, Wassim; Jiao, Pengcheng; Burgueño, Rigoberto; Lajnef, Nizar / Control of postbuckling mode transitions using assemblies of axially loaded bilaterally constrained beams.

In: Journal of Engineering Mechanics, Vol. 143, No. 10, 04017116, 01.10.2017.

Research output: Contribution to journalArticle

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