Temperature-dependent thermomechanical modeling of soft tissue deformation

Jinao Zhang, Jeremy Hills, Yongmin Zhong, Bijan Shirinzadeh, Julian Smith, Chengfan Gu

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

Modeling of thermomechanical behavior of soft tissues is vitally important for the development of surgical simulation of hyperthermia procedures. Currently, most literature considers only temperature-independent thermal parameters, such as the temperature-independent tissue specific heat capacity, thermal conductivity and stress-strain relationships for soft tissue thermomechanical modeling; however, these thermal parameters vary with temperatures as shown in the literature. This paper investigates the effect of temperature-dependent thermal parameters for soft tissue thermomechanical modeling. It establishes formulations for specific heat capacity, thermal conductivity and stress-strain relationships of soft tissues, all of which are temperature-dependent parameters. Simulations and comparison analyses are conducted, showing a different thermal-induced stress distribution of lower magnitudes when considering temperature-dependent thermal parameters of soft tissues.

Original languageEnglish
Article number1840021
Number of pages13
JournalJournal of Mechanics in Medicine and Biology
Volume18
Issue number8
DOIs
Publication statusPublished - 1 Dec 2018

Keywords

  • Pennes' bio-heat equation
  • soft tissue thermomechanical deformation
  • temperature-dependence
  • thermal ablation
  • Thermomechanical response

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