摘要
综述了压制高聚物粘结炸药(PBX)中炸药晶体在机械载荷作用下晶体的微(细)观结构演化,演化过程中损伤的表征和损伤对PBX炸药宏观性能的影响,讨论了压制压力、压制温度、晶体品质和粘结体系对PBX压制过程中晶体损伤的影响,在此基础上讨论了损伤机制和多种构建PBX中晶体损伤的物理模型,认为通过改变压制方式、压制温度、晶体品质和粘结体系可减少晶体压制损伤的产生;利用流形元法、离散元法、图像处理技术等可实现对PBX炸药进行较真实的建模。
Evolution of crystal microstructure under mechanical loading,characterization technology and the change of the macroscopical properties of PBX after being pressed were summarized.The pressure,temperament,quality of crystal and bonders were concluded to analyze the reason resulting to crystal damage.The mechanism of damage′s emerging was discussed,and several kinds of modeling methods were suggested.The damage in crystal could be reduced if changing the manner of pressing,temperament in pressing,the quality of crystal or bonders.Based on manifold method,discrete element method and digital image processing technique,the model of PBX can be constructed with actual microstructures.
出处
《含能材料》
EI
CAS
CSCD
北大核心
2013年第3期372-378,共7页
Chinese Journal of Energetic Materials
基金
中国工程物理研究院预研基金(No.426010302)
