Electrothermal stress in conducting particulate composites

Fuqian Yang, Linan An

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Electrothermal-mechanical interaction plays an important role in controlling the performance of electromechanical structures and field-assisted processes. The understanding of electrothermal-mechanical behavior of a material requires the analyses of Joule heating and thermomechanical deformation. In this study, we analyze the current-induced thermal stress in a conducting composite consisting of conducting spherical inclusions at dilute concentration. Assuming that there is no interaction among conducting inclusions, we obtain closed-form solutions of local temperature and thermal stress. The thermal stress created by Joule heating is proportional to the square of electric current density (electric field intensity) and the von-Mises stress reaches the maximum value at the interface between the spherical inclusion and the matrix. Large electric current will likely cause local delamination along the interface.

Original languageEnglish
Pages (from-to)6226-6236
Number of pages11
JournalJournal of Materials Science
Issue number17
StatePublished - Sep 2012

Bibliographical note

Funding Information:
Acknowledgements This study was supported by NSF through a Grant no. CMMI-0800018. The authors thank Ming Liu for the finite element calculation.

ASJC Scopus subject areas

  • Mechanics of Materials
  • Ceramics and Composites
  • Mechanical Engineering
  • Polymers and Plastics
  • General Materials Science
  • Materials Science (miscellaneous)


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