Study of viscoelastic poissons ratio of HMX based PBX
The viscoelastic Poissons ratio of HMX based PBX is studied to support the exact evaluation of structural integrity and safety of explosive parts.The experimental method of compression relaxation is adopted, and both of the axial and lateral strain is measured at room temperature so that the viscoelastic Poissons ratio is calculated.The experimental results show that the viscoelastic Poissons ratio of the material increases from 0.362 to 0.391 during 2h relaxation time.Variation regulation of density of the material in the experiment is analyzed and the results show that the density increased by 0.084% during the relaxation process.A three-dimensional viscoelastic constitutive relation is established based on the viscoelastic Poissons ratio curve and the stress relaxation curve, which could be used for numerical simulation.
PBX Viscoelasticity Poissons ratio
Long ZHAO Hai-xiao GAN Hong-wei YUAN Tian-bao DONG Wei TANG Hong-ping ZHOU
Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621999, China
国际会议
2018 International Conference on Defence Technology (2018国际防务技术会议)
北京
英文
257-260
2018-10-21（万方平台首次上网日期，不代表论文的发表时间）