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<p>The present work aims to develop the nonlocal electron–phonon two-temperature poro-thermoelastic theory to characterize inherent spatial–temporal nonlocal effects in electron thermal transport and electron–phonon coupling mechanism in ultra-fast laser heating condition. The new constitutive and controlling equations are derived by extended irreversible thermodynamics laws. Based on the developed model, the transient thermal shock response of porous metallic semi-infinite materials is investigated using the Laplace transform technique. The dimensionless numerical results show that the electron nonlocal parameter significantly enhances the electron thermal wave propagation velocity, and it eliminates electron thermal wave-front in the presence of electron relaxation effect. In this model, the dimensionless thermal and mechanical responses increase and the peak value increases; the increase in the plasma plume laser parameter increases the actual absorbed energy density at the surface and significantly improves the structural response.</p>

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A nonlocal electron–phonon two-temperature poro thermoelastic model for transient laser-induced responses in semi-infinite porous metal

  • 期刊论文

  • 发表日期：

    2026年3月13日

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  • Chenlin Li,
  • Jiakun Han,
  • Tianhu He

摘要

The present work aims to develop the nonlocal electron–phonon two-temperature poro-thermoelastic theory to characterize inherent spatial–temporal nonlocal effects in electron thermal transport and electron–phonon coupling mechanism in ultra-fast laser heating condition. The new constitutive and controlling equations are derived by extended irreversible thermodynamics laws. Based on the developed model, the transient thermal shock response of porous metallic semi-infinite materials is investigated using the Laplace transform technique. The dimensionless numerical results show that the electron nonlocal parameter significantly enhances the electron thermal wave propagation velocity, and it eliminates electron thermal wave-front in the presence of electron relaxation effect. In this model, the dimensionless thermal and mechanical responses increase and the peak value increases; the increase in the plasma plume laser parameter increases the actual absorbed energy density at the surface and significantly improves the structural response.