scholarly journals Multi-scale constitutive modeling of Ceramic Matrix Composites by Continuum Damage Mechanics

2014 ◽  
Vol 51 (23-24) ◽  
pp. 4068-4081 ◽  
Author(s):  
Amir Shojaei ◽  
Guoqiang Li ◽  
Jacob Fish ◽  
P.J. Tan
Keyword(s):  
Constitutive Modeling ◽  
Damage Mechanics ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Continuum Damage Mechanics ◽  
Continuum Damage ◽  
Matrix Composites ◽  
Multi Scale

Notch-strength prediction of ceramic matrix composites using multi-scale continuum damage model

Materialia ◽  
2019 ◽  
Vol 6 ◽  
pp. 100267 ◽  
Author(s):  
Rajesh S. Kumar ◽  
Matthew Mordasky ◽  
Greg Ojard ◽  
Zifeng Yuan ◽  
Jacob Fish
Keyword(s):  
Damage Model ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Strength Prediction ◽  
Continuum Damage ◽  
Matrix Composites ◽  
Continuum Damage Model ◽  
Multi Scale ◽  
Notch Strength

Accounting for frictional contact in an anisotropic damage model based on compliance tensorial variables, illustration on ceramic matrix composites

2018 ◽  
Vol 28 (8) ◽  
pp. 1150-1169 ◽  
Author(s):  
Emmanuel Baranger
Keyword(s):  
Damage Mechanics ◽  
A Priori ◽  
Damage Model ◽  
Ceramic Matrix Composites ◽  
Inelastic Strain ◽  
Ceramic Matrix ◽  
Thermomechanical Properties ◽  
Matrix Composites ◽  
Crack Network ◽  
Evolution Laws

Ceramic matrix composites have good thermomechanical properties at high or very high temperatures. The modeling of the crack networks associated to the degradation of such composites using damage mechanics is not straightforward. The main reason is the presence of a crack network mainly oriented by the loading direction, which is a priori unknown. To model this, compliance tensorial damage variables are used in a thermodynamic potential able to account for crack closure effects (unilateral contact). The damage kinematic is initially completely free and imposed by the evolution laws. The key point of the present paper is to account for friction in such cracks that can result in an apparent activation/deactivation of the shear damage. The initial model is enriched with an inelastic strain and a friction law. The plasticity criterion is expressed only using tensorial variables. The model is identified and illustrated on multiaxial data obtained at ONERA on tubes loaded in tension and torsion.

scholarly journals Localization due to Damage in Two-Direction Fiber-Reinforced Composites

1996 ◽  
Vol 63 (2) ◽  
pp. 321-326 ◽  
Author(s):  
F. Hild ◽  
P.-L. Larsson ◽  
F. A. Leckie
Keyword(s):  
Damage Mechanics ◽  
Ceramic Matrix Composites ◽  
Continuum Damage Mechanics ◽  
General Criterion ◽  
Matrix Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Damage Models ◽  
Pull Out ◽  
Fracture Features

Fiber pull-out is one of the fracture features of fiber-reinforced ceramic matrix composites. The onset of this mechanism is predicted by using continuum damage mechanics, and corresponds to a localization of deformation. After deriving two damage models from a uniaxial bundle approach, different configurations are analyzed through numerical methods. For one model some very simple criteria can be derived, whereas for the second one none of these criteria can be derived and the general criterion of localization must be used.

scholarly journals Modeling of damage in unidirectional ceramic matrix composites and multi-scale experimental validation on third generation SiC/SiC minicomposites

2014 ◽  
Vol 63 ◽  
pp. 298-319 ◽  
Author(s):  
C. Chateau ◽  
L. Gélébart ◽  
M. Bornert ◽  
J. Crépin ◽  
D. Caldemaison ◽  
...  
Keyword(s):  
Experimental Validation ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Third Generation ◽  
Matrix Composites ◽  
Multi Scale

A Review of Failure Models for Ceramic Matrix Composite Laminates Under Monotonic Loads

1990 ◽  
Vol 112 (4) ◽  
pp. 492-501 ◽  
Author(s):  
D. E. Tripp ◽  
J. H. Hemann ◽  
J. P. Gyekenyesi
Keyword(s):  
Matrix Composite ◽  
Composite Laminates ◽  
Damage Mechanics ◽  
Ceramic Matrix Composite ◽  
Ceramic Matrix Composites ◽  
Ceramic Matrix ◽  
Matrix Composites ◽  
Failure Models ◽  
Monotonic Loads ◽  
Semi Empirical

Ceramic matrix composites offer significant potential for improving the performance of turbine engines. In order to achieve their potential, however, improvements in design methodology are needed. In the past most components using structural ceramic matrix composites were designed by “trial and error” since the emphasis on feasibility demonstration minimized the development of mathematical models. To understand the key parameters controlling response and the mechanics of failure, the development of structural failure models is required. A review of short-term failure models with potential for ceramic matrix composite laminates under monotonic loads is presented. Phenomenological, semi-empirical, shear-lag, fracture mechanics, damage mechanics, and statistical models for the fast fracture analysis of continuous fiber unidirectional ceramic matrix composites under monotonic loads are surveyed.

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