Paper number 971
|MICROMECHANICAL MODELLING OF TI MMCS SUBJECTED TO TRANSVERSE TENSILE LOADING|
W. Ding and P. Bowen
IRC in Materials for High Performance Applications/ School of Metallurgy and Materials
The University of Birmingham
Edgbaston, Birmingham B15 2TT, U. K.
|Summary||A micromodelling analysis of unidirectionally reinforced Ti-6-4/SM1140+ subjected to transverse tensile loading has been performed using finite element methods. The composite is assumed to be infinite and regular, with either hexagonal or rectangular arrays of fibres in an elastic-plastic matrix. Unit cell models are applied in this analysis. The factors affecting transverse properties of the composites such as thermal residual stresses caused by cooling from the composite processing temperature, assumed fibre-matrix interface condition, fibre volume fraction, fibre spacing, and test temperature are discussed. There is a good agreement between FE analysis results and experimental measurements for transverse tensile behaviour of the composite Ti-6-4/SM1140+ with different fibre volume fractions and different fibre spacing ratios. The implication of these modelling studies to the design of components containing fibre-reinforced region is addressed.
||Keywords|| finite element method, titanium matrix composites, unit cell model, silicon carbide fibres, transverse mechanical behaviour, and transverse tensile loading.
Theme : Metal Matrix Composites ; Characterisation and Modelling
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