|本期目录/Table of Contents|

[1]陈春燕,栗保华,李昆,等.冲击加载下PBX的点火特性与力学特性间的关系[J].火炸药学报,2018,41(4):369-374.[doi:10.14077/j.issn.1007-7812.2018.04.009]
 CHEN Chun-yan,LI Bao-hua,LI Kun,et al.Relationship between Ignition Characteristics and Mechanical Properties of PBX under Impact Loading[J].,2018,41(4):369-374.[doi:10.14077/j.issn.1007-7812.2018.04.009]
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冲击加载下PBX的点火特性与力学特性间的关系()
     
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《火炸药学报》[ISSN:1007-7812/CN:61-1310/TJ]

卷:
41卷
期数:
2018年第4期
页码:
369-374
栏目:
出版日期:
2018-08-23

文章信息/Info

Title:
Relationship between Ignition Characteristics and Mechanical Properties of PBX under Impact Loading
作者:
陈春燕 栗保华 李昆 高立龙 王晓峰 南海 宁栋
西安近代化学研究所, 陕西 西安 710065
Author(s):
CHEN Chun-yan LI Bao-hua LI Kun GAO Li-long WANG Xiao-feng NAN Hai NING Dong
Xi’an Modern Chemistry Research Institute, Xi’an 710065, China
关键词:
高聚物黏结炸药PBX点火特性力学响应特性应力应变率
Keywords:
plastic bonded explosivePBXignition characteristicsmechanical response propertystressstrain rate
分类号:
TJ55;O346
DOI:
10.14077/j.issn.1007-7812.2018.04.009
文献标志码:
-
摘要:
为研究撞击加载下无CT可见疵病的高聚物黏结炸药(PBX)的点火特性,利用大落锤实验研究了PBX在冲击加载时的力学响应和点火机制;采用ANSYS/LS-DYNA软件模拟计算了400 kg落锤、2 500 mm落高撞击加载下PBX的力学响应特性,探讨了PBX力学特性与其点火特性间的关系。结果表明,模拟加载应力曲线与实验测试曲线高度吻合;同一落高下,弹性模量为1.12~4.36 GPa时,随着PBX弹性模量的增加,作用在PBX上的最大应力增加,PBX的最大应变率增大,发生点火的概率增加。为了增加PBX的加载安全性,PBX围压加载模量的最佳值应调整到1.12 GPa。
Abstract:
To study the ignition characteristics of non-CT visible defective plastic bonded explosive (PBX) under impact loading, the mechanical response and ignition mechanisms of PBX were studied by large drop hammer test. The mechanical response property of PBX under impact loading of 400 kg drop hammer and 2 500 mm drop height was simulated and calculated by ANSYS/LS-DYNA software. The relationship between the mechanical properties of PBX and its ignition characteristics was discussed. The results show that the simulated load stress curve is in good agreement with the experimental test curve. At the same drop height and under the elastic modulus of 1.12-4.36 GPa, with increasing the elastic modulus of PBX, the maximum stress, maximum strain rate and probability of ignition acted on PBX increase. To increase the loading safety of PBX, the optimum value of confined loading modulus of PBX should be adjusted to 1.12 GPa.

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备注/Memo

备注/Memo:
收稿日期:2017-11-17;改回日期:2018-01-30。
基金项目:国家安全重大基础研究项目
作者简介:陈春燕(1979-),女,工程师,从事热固性浇注PBX的固化及力学性能研究。E-mail:ccyanzi04@163.com
通讯作者:王晓峰(1967-),男,研究员,从事混合炸药配方及工艺研究。E-mail:club204@163.com
更新日期/Last Update: 1900-01-01