[1]陈春燕,高立龙,王晓峰,等.浇注PBX固化温度场的数值模拟[J].爆破器材,2016,45(01):16-21.[doi:10.3969/j.issn.1001-8352.2016.01.004]
　CHEN Chunyan,WANG Xiaofeng,GAO Lilong,et al.Numerical Simulation of Temperature Field of Cast PBX during Curing Process[J].EXPLOSIVE MATERIALS,2016,45(01):16-21.[doi:10.3969/j.issn.1001-8352.2016.01.004]
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浇注PBX固化温度场的数值模拟()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
45
期数:
2016年01
页码:
16-21
栏目:
基础理论
出版日期:
2016-01-29

文章信息/Info

Title:
Numerical Simulation of Temperature Field of Cast PBX during Curing Process
文章编号:
4992
作者:
陈春燕; 高立龙; 王晓峰; 王永顺; 南海; 李昆
西安近代化学研究所（陕西西安，710065）
Author(s):
CHEN Chunyan;  WANG Xiaofeng;  GAO Lilong;  WANG Yongshun;  NAN Hai;  LI Kun
Xi’an Modern Chemistry Research Institute (Shaanxi Xi’an, 710065)
关键词:
浇注PBX; 固化; 数值模拟; 温度场; 固化速率
Keywords:
cast plastic bonded explosive; curing; numerical modeling; temperature field; curing velocity
分类号:
TQ560.71; O631.2+2
DOI:
10.3969/j.issn.1001-8352.2016.01.004
文献标志码:
A
摘要:
为了使浇注塑料黏结炸药（PBX）具有均匀的固化温度场，采用COMSOL Multiphysics软件和Fourier数学模型，分别模拟研究了模具尺寸、烘箱与PBX间的温差、PBX固化速率等因素对PBX温度场分布的影响。结果表明：药浆温度低于烘箱温度时，浇注PBX内的温度场呈现由外向里递减的趋势。Φ60 mm×240 mm、Φ100 mm×240 mm、Φ200 mm×240 mm和Φ200 mm×1 000 mm，壁厚都为5 mm的模具，从25 ℃升至60 ℃的过程中，模具边缘和中心点的最大温差可分别达到3.22、6.66、10.49 ℃和13.08 ℃。Φ200 mm×1 000 mm，壁厚为5 mm的模具分别从0、25、40、50 ℃升至60 ℃时，模具边缘和中心点的最大温差可分别达到17.56、13.08、7.02 ℃和3.36 ℃。药浆温度与烘箱温度相同时，模具边缘温度最小，中心温度最高，此时影响温度场梯度的主要因素为药浆固化速率的大小。当药浆和烘箱间存在温差，可通过减小模具尺寸、降低浇注PBX内的温度梯度，且浇注PBX的固化尽量采取药浆与烘箱温度一致的固化工艺，此时选择固化速率较小的药浆可实现PBX内的温度基本一致。
Abstract:
In order to realize uniform temperature field of the cast plastic bonded explosive (PBX) during curing process, the numerical simulation was conducted by a COMSOL Multiphysics software and a Fourier model. Effects of the size of mold, the temperature difference between the oven and the PBX, PBX curing velocity on the temperature field in PBX were studied. Results show that, when temperature of PBX is lower than that of oven, the temperature field in PBX decreases from the outside to the centre of mold. When the size of mold is respectively Φ60mm×240mm、Φ100mm×240mm、Φ200mm×240mm and Φ200mm×1 000mm and mold thickness is 5 mm, in the process of temperature ranging from 25 ℃ to 60 ℃, the temperature difference between edge point and center point of the mold is respectively 3.22、6.66、10.34 ℃ and 13.08 ℃. For Φ200 mm×1 000 mm mold with the thickness of 5mm, ranging from 0、25、40 ℃ and 50 ℃ to 60 ℃, the max temperature difference in mold can reach to 17.56, 13.08 , 7.02 ℃ and 3.36 ℃ respectively. When the temperature of PBX is the same as that of the oven, temperature in the center is the highest, and that in the edge is the lowest. Temperature difference is mainly affected by the curing velocity. When temperature different exists between PBX and oven, the temperature gradient in PBX can be reduced by reducing the dimension of the mould, and low curing velocity can realize temperature field uniform in PBX.

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备注/Memo

备注/Memo:
收稿日期：2015-06-25
基金项目：国防973资助项目（51340030101）
作者简介：陈春燕（1979~），女，工程师，主要从事热固性浇注PBX的固化及力学性能研究。E-mail:ccyanzi04 @163.com
通信作者：王晓峰（1967~），男，研究员，主要从事炸药配方的设计与制备研究。E-mail:wxfclub@163.com
更新日期/Last Update: 2016-01-28