Determination of the Thermal Stress Produced by a Thermo-poro-inclusion of Spheroid-shaped Near a Free Surface

2019 International Conference on Advances in Materials, Mechanical and Manufacturing

材料科学;机械制造

Zhang, X.^1 ; Jin, X.^1^2 ; Li, P.^1 ; Lyu, D.^1 ; Zhang, R.^1

State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing

400030, China^1

College of Aerospace Engineering, Chongqing University, Chongqing

400030, China^2

关键词: Comparative studies;    Elasticity solutions;    Eshelby's inclusion;    Free boundary surfaces;    Geophysical structure;    Mechanical transmission system;    Pressure fluctuation;    Spheroidal inclusion;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/576/1/012043/pdf
DOI  :  10.1088/1757-899X/576/1/012043

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Eshelby's inclusion with thermo-porous eigenstrain is a classical micromechanics problem, and may find wide applications in various engineering fields including mechanical transmission system, composite materials and geophysical structures. In this paper, the elastic field produced by thermo-porous spheroidal inclusion placed vertically near a free boundary surface is investigated. The current work complements our previous publication on the horizontally aligned spheroidal inclusion [Computers & Geosciences. 2019;122:15-24], and hence concludes that a complete elasticity solution with respect to the displacement, strain and stress can be obtained in closed-form. The elastic field of spheroidal inclusion due to thermal expansion is provided, and comparative study of inclusion due to fluid withdrawal leading to a decrease in pore pressure is discussed. The present half-space inclusion model can be used to determine the elastic fields of porous materials caused by produced by pore pressure fluctuation and temperature alteration.