The initial residual stress of the polymer bonded explosive based on TATB and its distribution were tested by blind-hole drilling method.

In order to explore temperature effect on mechanical properties and binding energy of polymer-bonded explosive(PBX),a molecular dynamics method and compass force field are adopted to periodically simulate high insensitive explosive TATB(1,3,5-triamino-2,4,6-trinitrobenzene) crystal and TATB/F2311 consisted of TATB and fluorine rubber(F2311) at different temperatures.

Based on the established models with vacancy and doping point defects,molecular dynamics(MD) simulation has been used to explore the effects of crystal defects on mechanical and detonation prop-erties of perfect β-HMX crystal and β-HMX based polymer-bonded explosives(PBX),in which the hy-droxyl terminated polybutadiene(HTPB) is used as a binder.

This thesis probed into the application of acoustic emission (AE) technique to study the mechanical properties and fracture mechanism of polymer-bonded explosive (PBX), basing on the experiments of mock and real PBX material and structure.

Residual stress of polymer bonded explosive(PBX) was tested by x-ray diffraction method and a new diffraction peak,which has not yet been reported in TATB(triamino-trinitrobenzene) PDF card,was discovered at near 72.

It is chosen as the base of polymer bonded explosive (PBX).

Acoustic characteristics of two kinds of polymer bonded explosives(PBXs), JOB-9003 and JO-9159, were studied with digital ultrasonic flaw detector.

Hot spot mechanism in plastic bonded explosives (PBX) under shock loading is the key of shock initiation in explosives.

In order to investigate the propagation characteristics of TATB based explosive detonation wave under the point initiation condition,a double sensitivity VISAR system is used to measure the copper plate velocity in Bigplate test,and a two-dimensional hydrodynamic code DYNA2D is applied to simulate detonation waves in TATB based explosive.