Institute of Solid Mechanics, School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, PR China.
Institute of Solid Mechanics, School of Aeronautic Science and Engineering, Beihang University, Beijing, 100191, PR China.
J Therm Biol. 2021 Aug;100:103038. doi: 10.1016/j.jtherbio.2021.103038. Epub 2021 Jun 29.
This paper analyzes the thermoelastic responses of skin tissue during laser irradiation based on a generalized dual-phase-lag (DPL) model. The method of separation of variables is utilized to obtain the analytical solutions for thermal and mechanical responses. The influences of some crucial parameters on temperature, displacement and stress evolutions are discussed, including the phase lag of heat flux, the phase lag of temperature gradient and the phase lag of laser pulse, the coupling factor between tissue and blood, the porosity of tissue, the equivalent diameter of tissue and the diameter of blood vessels. The generalized DPL bio-heat transfer model predicts different results from those by the classical DPL model and Pennes model. The equivalent diameter of tissue affects the coupling factor between tissue and blood, while the diameter of blood vessels mainly affects the porosity of tissue.
本文基于广义双相滞后（DPL）模型分析了激光辐照下皮肤组织的热弹性响应。利用分离变量法获得了热和力学响应的解析解。讨论了一些关键参数对温度、位移和应力演化的影响，包括热流相滞后、温度梯度相滞后和激光脉冲相滞后、组织与血液的耦合因子、组织的孔隙率、组织的等效直径和血管的直径。广义 DPL 生物传热模型预测的结果与经典 DPL 模型和 Pennes 模型不同。组织的等效直径影响组织与血液的耦合因子，而血管的直径主要影响组织的孔隙率。
