Multiscale numerical investigation of ratchet growth damage effects in PBX 9502
Tyler Hagengruber,
Kane C. Bennett,
Samuel H. Boyce
et al.
Abstract:This paper presents results of numerical experiments conducted on the high explosive PBX 9502 to investigate how recently observed grain‐scale damage mechanisms of ratchet growth [1] affect uniaxial compression measurements. Simulations are multiscale in the sense of directly resolving grains, pores, cracks, and grain‐interfaces based upon scanning electron microscope (SEM) images of damaged and undamaged samples. The combined finite‐discrete element method (FDEM) is utilized to resolve both grain‐scale microf… Show more
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