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Quasistatic mechanical behavior of HMX- and TATB-based plastic-bonded explosives
Mechanics of Materials ( IF 3.4 ) Pub Date : 2020-11-01 , DOI: 10.1016/j.mechmat.2020.103561
Gaëtane Plassart , Didier Picart , Michel Gratton , Arnaud Frachon , Michaël Caliez

Abstract Data on the macroscopic quasistatic mechanical behavior of pressed HMX- and TATB-based plastic-bonded explosives (PBXs) are listed in this paper. This review shows that (1) few characterizations are available for TATB-based PBXs. This gap is filled in this paper. An extensive database is detailed for the CEA M2 explosive composition. The HMX and TATB database then enables selection of the deformation mechanisms to be considered: viscoelasticity, damage-induced anisotropy and its effectivity (i.e.: whether or not the damage is influenced by the loading direction), plasticity with kinematic and isotropic hardenings, pressure and temperature dependencies and asymmetric failure threshold. The review also shows that (2) HMX- and TATB-based materials share close elastic and ultimate properties when the compositions (binders, solid volume fractions) and the mechanical behavior of the two crystals differ. The constitutive laws proposed in the literature are reiterated. In our opinion, a universal law could be proposed in the near future, each material being considered by its own set of parameters. The objective of this paper is to draw up the guidelines for model improvement.

中文翻译:

HMX-和TATB-基塑料粘结炸药的准静态力学行为

摘要 本文列出了压制的 HMX 和 TATB 基塑料粘结炸药 (PBX) 的宏观准静态力学行为数据。该审查表明 (1) 基于 TATB 的 PBX 的特征很少。本文填补了这一空白。一个广泛的数据库详细介绍了 CEA M2 炸药成分。然后,HMX 和 TATB 数据库可以选择要考虑的变形机制:粘弹性、损伤引起的各向异性及其有效性(即:损伤是否受加载方向的影响)、具有运动学和各向同性硬化的塑性、压力和温度依赖性和非对称故障阈值。该审查还表明,(2) HMX 和 TATB 基材料在组合物(粘合剂、固体体积分数)和两种晶体的机械性能不同。重申了文献中提出的构成法。我们认为,在不久的将来可能会提出一个普遍规律,每种材料都由其自己的一组参数来考虑。本文的目的是制定模型改进的指导方针。
更新日期:2020-11-01
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