Simulation analysis of co-continuous ceramic composite dynamic mechanical performance and optimization design

In this paper, a generation-based optimization method is proposed to reconstruct three-dimensional (3D) finite element (FE) model of co-continuous SiC3D/Al composites. Investigation of dynamic numerical simulation is applied to the model. Then an optimization design of different infill materials, volume fractions and distribution characters is proposed. After research among the three infill materials of Al, PU and epoxy, the SiC3D/Al composites have the best dynamic behavior. Then different SiC3D/Al composite models are reconstructed by changing the volume fraction and core distribution probability in the reconstruction method. The results indicate that the peak stress raise significantly along with the increasing of SiC volume fraction. But in the unloading stage, the composites appear a sustaining compressive capacity when the SiC volume fraction is lower. Remaining mass rate and failure contour are studied to research the failure process. The stress is also influenced by the distribution characters significantly. At last, the composites are optimized.