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Crack analysis of nano-sized thermoelectric material structures.
- Source :
-
Engineering Fracture Mechanics . Jul2020, Vol. 234, pN.PAG-N.PAG. 1p. - Publication Year :
- 2020
-
Abstract
- • Analyses of thermoelectric nano-sized structures with cracks. • The size-effect phenomenon is considered by strain-gradients in constitutive equations. • The mixed FEM formulation is applied for numerical implementation. • The influence of the size effect on the crack-opening-displacements is investigated. General 2D boundary value problems with cracks in nano-sized structures of thermoelectric materials are analyzed by the finite element method (FEM). The size-effect phenomenon observed in nano-sized structures is considered by strain-gradients in the constitutive equation for the high-order stress tensor. The variational principle is applied for derivation of coupled thermo-electro-mechanical governing equations. The thermo-electrical fields are fully coupled and the mechanical fields are coupled with temperature only. The mixed FEM with the C0 continuous interpolation for displacements and strains is developed. A collocation approach for kinematic constraints between strains and displacements is applied. The influence of the size effect on variation of crack opening displacements is demonstrated by some numerical examples. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00137944
- Volume :
- 234
- Database :
- Academic Search Index
- Journal :
- Engineering Fracture Mechanics
- Publication Type :
- Academic Journal
- Accession number :
- 143658367
- Full Text :
- https://doi.org/10.1016/j.engfracmech.2020.107078