Study on compression–expansion behaviour of PBXs substitutive materials

ABSTRACT

In this work, polymer-bonded sugars were used as a substitutive material for polymer-bonded explosives (PBXs). Their production process and damage mechanism under compressive process were analysed. We also investigated the initial Poisson’s ratio of PBXs as well as their mechanical properties under quasi-static compression and variation of Poisson’s ratio during the one-dimensional compressive process. Compressive expansion behaviour due to compressive loading was investigated comprehensively. It was found that due to the damage caused by the loading process, volumetric strain and Poisson’s ratio showed three stages characteristic. Experimental results proved that compression–expansion had occurred during the one-dimensional compressive process. Simulation results verified that PBXs crystal underwent mainly transgranular fracture under quasi-static compression.

KEYWORDS:

• Polymer-bonded explosives
• explosive substitutive material
• compressive expansion behaviour
• quasi-static loading
• Poisson's ratio⁠

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Joint Fund of National Natural Science Foundation of China and the China Academy of Engineering Physics (Grant No. U1330101), the National Natural Science Foundation of China (Grant Nos. 11202110, 11472141), the Natural Science Foundation of Ningbo City (Grant No.2017A610046), and K.C. Wong Magna Fund in Ningbo University.