Micromechanics-based determination of effective elastic properties of polymer bonded explosives

The cohesive law for the particle/matrix interfaces in high explosives

“…The Young's modulus of PBX 9501 varies fromĒ ¼ 0:96 to 1.15 GPa at low-strain rate, depending on the experimental methods and the strain rate used (Olinger and Hopson, 1978;Gray III et al, 1998;Bennett et al, 1998). In the following we take a representative value of the Young's modulusĒ ¼ 1 GPa of PBX 9501 (Gray III et al, 1998;Banerjee and Adams, 2003), which gives the cohesive strengths s ¼ 1:66 MPa. Before the cohesive strength is reached, the macroscopic cohesive law has a very steep rising portion.…”

Molecular dynamics study of binding energies, mechanical properties, and detonation performances of bicyclo-HMX-based PBXs

“…Therefore, researches on the composite material PBXs have been becoming a hot topic. Heretofore, a lot of effort has been put into studying the explosives and polymers with experimental measurements [19][20][21][22][23], calculations or simulations by quantum mechanics (QM), molecular mechanics (MM), and molecular dynamics (MD) [24][25][26]. Recently, a series of MD simulations have also been performed by us to study the structures and properties of TATB (2,4,6-trinitrobenzene-1,3,5-triamine), HMX, TNAD (trans-1,4,5,8-tetranitrodecahydropyrazino [2,3-b]pyrazine), and CL-20 (2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane)-based PBXs [27].…”

Prediction of effective thermo-mechanical properties of particulate composites

“…An improved model was proposed by Clements and Mas [9] to investigate the mechanical behavior of PBX with a bimodal particle distribution. Using a two-dimensional representative volume element (RVE), Banerjee and co-workers investigated the effective elastic properties of the particulate explosive PBX 9501 [10,11]. In most of these efforts, the random distribution of particles in the unit cell, which is crucial to property prediction, is either ignored [8,9] or manually controlled [10,11].…”