A study of fiber debonding in circular composite arches. (Étude de la décohesion fibre-matrice dans les arcs composites circulaires.) (French) Zbl 1177.74357
Summary: In the framework of linear elasticity, we consider a composite arch constituted by a matrix and a fiber reinforcing the structure. This arch is clamped at one extremity, while at the other the fibre is subject to either prescribed displacements or forces. By making an asymptotic analysis based on the slenderness and loading parameters, we study by means of an energy criterion the fiber-matrix debonding, resulting from the inextensional displacements of the medium line. We show in particular that for these specific loading types, the debonding occurs brutally, and the critical length of initiation is of order 1.
MSC:
74R99 | Fracture and damage |
74E30 | Composite and mixture properties |
74G10 | Analytic approximation of solutions (perturbation methods, asymptotic methods, series, etc.) of equilibrium problems in solid mechanics |
74B05 | Classical linear elasticity |