Abstract: The explosion mechanics programming ObjectMMIC is a Eulerian multi-material numerical method based on object-oriented. The stress and stress rate distributions of FAE fuel vs. time, when launching overloading acceleration is 1O4 g, have been simulated by executing the programming object MMIC, whose solid- liquid ingredient ratios are 3:2, 6.5:3.5 and 5:5，respectively. The analysis shows that the ratio of solid-liquid ingredients has a great influence on stress and stress rate. The stress depends only on the solid ingredient content of the fuel, while the stress rate depends on the solid and liquid ingredient contents. Studies in this domain have the potential for gaining information on optimizing FAE fuel, leading to the improvement of stability and launching safety. The comparison between experimental and simulative results shows that the numerical simulation method is feasible.

Key words: explosive mechanics , fuel air explosive , launching safety , launching over loading , fuel ingredient , stress , stress rate