Model and simulation of an SMA enhanced lip seal

Rui Qiao*, Xiujie Gao, Brinson L. Catherine

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The feasibility of using SMA wires to improve the seal effectiveness has been studied experimentally and numerically. In this article, we present only the numerical study of simulating the thermo-mechanical behavior for an SMA enhanced lip seal, leaving the test setup and results in the experimental counterpart. A pseudo 3D SMA model, considering 1D SMA behavior in the major loading direction and elastic response in other directions, was used to capture the thermo-mechanical behavior of SMAwires. The model was then implemented into ABAQUS using the user-defined material subroutine to inherit most features of the commercial finite element package. Two-way shape memory effect was also considered since the SMA material exhibits strong two-way effects. An axisymmetric finite element model was constructed to simulate a seal mounting on a shaft and the sealing pressure was calculated for both the regular seal and the SMA enhanced seal. Finally, the result was qualitatively compared with the experimental observation.

Original languageEnglish (US)
Pages (from-to)570-578
Number of pages9
JournalJournal of Materials Engineering and Performance
Volume20
Issue number4-5
DOIs
StatePublished - Jul 1 2011

Keywords

  • ABAQUS
  • Lip seal
  • Pseudo 3D
  • Shape memory alloys
  • SMA model
  • Two-way shape memory effect
  • TWSME
  • UMAT

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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