Numerical simulation of mechanical behaviour and prediction of effective properties of metal matrix composites with consideration for structural evolution under shock wave loading

4th International Conference on Competitive Materials and Technology Processes

Karakulov, V.V.^1 ; Smolin, I. Yu^1,2 ; Kulkov, S.N.^1,2

National Research Tomsk State University, Tomsk

634050, Russia^1

Institute of Strength Physics and Materials Science SB RAS, Tomsk

634055, Russia^2

关键词: Effective elastic modulus;    Mechanical behaviour;    Mechanical characteristics;    Metal-ceramic composites;    Randomly distributed;    Structural evolution;    Structure of composites;    Volume concentration;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/175/1/012029/pdf
DOI  :  10.1088/1757-899X/175/1/012029

来源: IOP

【 摘 要 】

Mechanical behaviour of stochastic metal-ceramic composite materials under shock wave loading was numerically simulated on mesoscopic scale level. Deformation of mesoscopic volumes of composites whose structure consisted of a metal matrix and randomly distributed ceramic inclusions was simulated. The results of numerical simulation were used for numerical evaluation of effective elastic and strength properties of metal-ceramic materials with different values of volume concentration of ceramic inclusions. The values of the effective mechanical characteristics of investigated materials were obtained, and the character of the dependence of the effective elastic and strength properties on the structure of composites was determined. It is shown that the dependence of the values of the effective elastic moduli on the volume concentration of ceramic inclusions is nonlinear and monotonically increasing. The values of the effective elastic limits increase with increasing concentration of the inclusions, however, for the considered composites, this dependence is not monotonic.