An improved analysis of the stresses in a single-fibre fragmentation test: I. Two-phase model

Autor:	Janis Varna, M Desaeger, Wei Wu, Ignace Verpoest
Rok vydání:	1997
Předmět:	Materials science Numerical analysis General Engineering engineering.material Finite element method Coating Ceramics and Composites Phase model Shear stress engineering Cylinder stress Interphase Calculus of variations Composite material
Zdroj:	Composites Science and Technology. 57:809-819
ISSN:	0266-3538
DOI:	10.1016/s0266-3538(97)00050-x
Popis:	A new model has been developed for the analyses of the stress state in a single-fibre specimen containing a coated fibre. This model is a generalization of the 2-phase model developed in Part I[1] for the case of 3 phases: fibre/coating/matrix. The stress distributions in radial and axial directions are obtained by using the principle of minimum complementary energy. Assumptions made to simplify the stress analysis are: (a) the axial stress distribution is uniform across the fibre cross-section; (b) the axial stress distribution is uniform across the coating thickness; (c) the non-uniform axial stress distribution in the matrix is given by a decreasing function which is obtained by a minimization procedure. The model developed has been used in a parametric analysis to determine the effect of the coating properties and geometry on the rate of stress transfer and shear stress concentration at the fibre end.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::57d2709c00d071cbaa7bb4556c18b286 https://doi.org/10.1016/s0266-3538(97)00050-x Zobrazit plný text záznamu Full Text from ScienceDirect