On the coupling dynamics between thermally stressed beams and granular chains

Emma La Malfa Ribolla, Abdollah Bagheri, Leith Al-Nazer, Piervincenzo Rizzo

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


The in-situ measurement of thermal stress in slender beams, or long continuous welded rails, may prevent structural anomalies. With this aim, we investigated the coupling dynamics between a beam and the highly nonlinear solitary waves propagating along a straight granular chain in contact with the beam. We hypothesized that these waves can be used to measure the stress of thermally loaded structures, or to infer the neutral temperature, i.e., the temperature at which this stress is null. We studied numerically and experimentally the mechanical interaction of one and two straight chains of spherical particles in contact with a prismatic beam that is subjected to heat. The results show that certain features of the waves are affected by the beamâs stress. In the future, these findings may be used to develop a novel nondestructive evaluation technique for the prediction of neutral temperature and thermal buckling.
Original languageEnglish
Pages (from-to)541-556
Number of pages16
JournalArchive of Applied Mechanics
Publication statusPublished - 2016

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering


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