Finite element analysis of thermal residual stress and temperature changes in cartilage during laser radiation

Yongseok Chae; Sergio H. Diaz-Valdes; Enrique J. Lavernia; Brian Jet-Fei Wong M.D.

doi:10.1117/12.434709

9 July 2001 Finite element analysis of thermal residual stress and temperature changes in cartilage during laser radiation

Yongseok Chae, Sergio H. Diaz-Valdes, Enrique J. Lavernia, Brian Jet-Fei Wong M.D.

Author Affiliations +

Proceedings Volume 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical; (2001) https://doi.org/10.1117/12.434709
Event: BiOS 2001 The International Symposium on Biomedical Optics, 2001, San Jose, CA, United States

Abstract

In this study, the rheological and phase behavior of porcine nasal cartilage were determined using dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry, and thermogravimetric analysis and the principles of thermal analysis (TA). The results were then incorporated in a finite element analysis used to estimate thermal residual stress and temperature distributions during laser irradiation. The finite element analysis was conducted by using a commercially available code ABAQUS (Hibbitt, Karlsson & Sorensen, Inc, USA) to solve the fully coupled thermo-mechanical equations. Arrhenius kinetics were used to obtain the activation energy associated with the phase transition as determined using DMTA and the results were compared with the energy of the phase transformation calculated using DSC. Laser-induced stress relaxation produced an increase in the von Mises stress within the simulation. The values generated during photo thermal heating were calculated assuming cartilage as an isotropic linear visoelastic material. The advantages and limitations of this approach technique are discussed, in particular with relevance to optimizing this procedure for use in clinical settings.

Citation Download Citation

Yongseok Chae, Sergio H. Diaz-Valdes, Enrique J. Lavernia, and Brian Jet-Fei Wong M.D. "Finite element analysis of thermal residual stress and temperature changes in cartilage during laser radiation", Proc. SPIE 4257, Laser-Tissue Interaction XII: Photochemical, Photothermal, and Photomechanical, (9 July 2001); https://doi.org/10.1117/12.434709

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