Effect of Interface Debonding on the Viscoelastic Behavior of Plastic-Bonded Explosives
The effect of crystal/binder interface debonding on the behavior of plastic-bonded explosives is studied. The interface debonding is represented by a nonlinear cohesive law for the high explosive PBX 9501. The micromechanics analysis based on the Mori-Tanaka method gives the constitutive relation of plastic- bonded explosives in terms of the properties of elastic crystals, viscoelastic binder, and nonlinear cohesive law for interfaces. For the example of a plastic-bonded explosive subject to hydrostatic tension, simple analytical expressions of the macroscopic stress-strain relation are obtained. The strain rate, temperature and interface debonding, have combined effects on the behavior of plastic- bonded explosives. High strain rate and low temperature give higher strength. However, the rate and temperature effects decrease as the crystal volume fraction increases.
interface debonding binder viscoelasticity strain rate temperature size effect
Henry TAN
School of Mechanical, Aerospace and Civil Engineering, University of Manchester, Manchester, M60 1QD, UK
国际会议
西安
英文
290-296
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）