Buckling of thermalized elastic sheets

Ali Morshedifard, Miguel Ruiz-García, Mohammad Javad Abdolhosseini Qomi, Andrej Košmrlj

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Steady progress in the miniaturization of structures and devices has reached a scale where thermal fluctuations become relevant and it is thus important to understand how such fluctuations affect their mechanical stability. Here, we investigate the buckling of thermalized square sheets under either compression or shear. We demonstrate that thermal fluctuations increase the critical buckling load compared to the classical Euler buckling load due to the enhanced scale-dependent bending rigidity for sheets that are much larger than a characteristic thermal length scale. The presented results are universal and apply to a wide range of microscopic sheets. These results are especially relevant for atomically thin 2D materials, where thermal fluctuations can significantly increase the critical buckling load because the thermal length scale is on the order of nanometers at room temperature.

Original languageEnglish (US)
Article number104296
JournalJournal of the Mechanics and Physics of Solids
Volume149
DOIs
StatePublished - Apr 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Keywords

  • Buckling
  • Elastic material
  • Plates
  • Thermomechanical process

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