文献类型：期刊文献

英文题名：A local thermal non-equilibrium model for transversely isotropic porothermoelastic materials

作者：Jin, Z. -H.[1];He, L. -W.[2]

机构：[1]Univ Maine, Dept Mech Engn, Orono, ME 04469 USA;[2]E China Univ Sci & Technol, Sch Mech & Power Engn, MOE Key Lab Safety Sci Pressurized Syst, Shanghai 200237, Peoples R China

年份：2013

卷号：224

期号：7

起止页码：1429

外文期刊名：ACTA MECHANICA

收录：;EI(收录号：20132816479583);WOS:【SCI-EXPANDED(收录号:WOS:000320730600008)】；

语种：英文

外文关键词：Pore pressure - Porous materials - Thermal stress - Thermal expansion - Anisotropy - Heat convection

摘要：This work presents a local thermal non-equilibrium (LTNE) poroelasticity model for transversely isotropic porous media and applies the model to the problem of a cylindrical hole in an infinite porous medium subjected to convective cooling on the boundary of the cavity. The LTNE thermo-poroelasticity equations are solved using Laplace transform, and numerical examples are presented to examine the effects of LTNE and material anisotropy on the pore pressure and thermal stresses around the cavity. The results show that the thermal pore pressure and the magnitudes of thermal stresses increase significantly with an increase in the thermal expansion coefficient in the transverse direction. However, the elastic modulus anisotropy alone has only a marginal effect on the thermal pore pressure and stresses. The results also confirm that the LTNE effects become more pronounced when the convective heat transfer boundary conditions with moderate Biot numbers are considered.