Peridynamic investigation of dynamic damage behaviors of PBX confined in spherical steel shells

Huang, Yujing; Deng, Xiaoliang; Bai, Jingsong

doi:10.1016/j.mechmat.2022.104389

Cited by 5 publications

(1 citation statement)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…So far, PD has been extensively applied in simulating the problems associated with damage and failure of various materials with a good accuracy and many promising results have been achieved [24][25][26][27]. Recently, PD modeling are also used to investigate the dynamic responses of PBXs and the competing damage mechanisms are revealed [28][29][30]. The primary results indicate that the PD modeling can facilitate capture of transgranular and intergranular fracture phenomena in PBXs [28].…”

Section: Introductionmentioning

confidence: 99%

Peridynamic modeling of damage and non-shock ignition behavior of confined polymer bonded explosives under impact loading

Deng

Zhao²,

Huang³

2023

Phys. Scr.

View full text Add to dashboard Cite

A mechanical-thermal-chemical coupled peridynamic (PD) modeling for analyzing the damage and non-shock ignition behavior of polymer bonded explosives (PBXs) subject to impact loading has been presented. The friction and heat conduction and Arrenhenius law are embedded into the PD theory, ensuring that the simulation model is capable of capturing major features of dynamic damage response of PBX. A PD material model considering plasticity and the asymmetric behaviors of PBX under tensile and compressive loadings is proposed in this study. For a ring-shaped PBX 9501 sample confined by the steel structures, the simulation results indicate that the PBX 9501 in the regions towards the impact face and support face suffers from the serious damage. Meanwhile, the corresponding average temperatures in these two regions are also higher than their counterparts in other regions due to the more intense interaction between PBX 9501 and the steel confinement structures. The ignition time decreases with the increasing impact velocity within the range of 40-120 m/s. The internal steel shell response is analyzed according to its velocity history within a representative box. It is found that the deformation process of internal steel shell is closely related to the complicated flow behaviors of PBX 9501.

show abstract