双立爆炸大板面TA2/Q235B复合板宏观变形初探

孙泽瑞; 史长根; 吴晓明; 高立; 史和生; 林孙朗

doi:10.12073/j.hj.20200519002

双立爆炸大板面TA2/Q235B复合板宏观变形初探

1. 陆军工程大学, 南京 270000;
2. 南京润邦新金属材料公司, 南京 210803

基金项目:

国家自然科学基金(51541112)

详细信息

作者简介:
孙泽瑞,1996年出生,硕士;主要从事双立式爆炸焊方面的研究工作;已发表论文6篇.

通讯作者:
史长根,1971年出生,博士,教授,博士生导师

中图分类号: TG456.6
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- 文章访问数: 21
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出版历程
- 收稿日期: 2020-05-18

Study on macro deformation of TA2/Q235B composite plate by double vertical explosive welding

1. PLA Army Engineering University, Nanjing 270000, China;
2. Nanjing Runbang New Materials Group, Nanjing 201803, China

摘要

摘要: 双立式爆炸焊成形复合板的宏观变形问题增加了制造成本甚至造成产品报废。利用特征线法通过对爆轰产物一维分散情况进行了分析，给出了板材在x与y方向所受炸药冲量的分布曲线。为探究大面积TA2/Q235B复合板宏观变形的影响因素，进行了4组双立爆炸焊对比试验。在装药质量比为1∶0.36∶3.19条件下，采用柔性沙土防护时，其变形规律遵循冲量分布曲线，采用刚性石壁防护时，复合板观察到凹凸坑的存在；在装药质量比为1∶0.4∶7条件下，复合板由于自身强度较高，主要呈现内弯变形，采用刚性+柔性综合防护装置，能够减少大面积复合板的宏观变形。板材宏观变形受到装药质量比、防护装置特征及炸药作用冲量的综合影响，且三者的影响因子依次递减。双立爆炸焊产生的宏观变形问题可通过适当减少装药质量比、优化防护装置及推广双立爆炸焊+轧制技术来进一步解决。
- 双立式爆炸焊 /
- 宏观变形 /
- 爆炸力学 /
- 特征线法
Abstract: The macroscopic deformation of double vertical explosive welded composite plate increased the manufacturing cost and even caused the product to be scrapped.In this paper,the one-dimensional dispersion of detonation products was analyzed by using the characteristic line method,and the distribution curves of explosive impulse in X and Y directions of the plate were obtained.In order to explore the influencing factors of macroscopic deformation of TA2/Q235B composite plate,four groups of double vertical explosive welding comparison tests were conducted.Under the condition that the mass ratio was 1∶0.36∶3.19,the deformation law of flexible sand and soil protection followed the impulse distribution curve,and the existence of concave and convex pits was observed in the composite board when rigid stone wall protection was adopted; under the condition that the charge mass ratio was 1∶0.4∶7,the composite plate mainly presented internal bending deformation due to its high strength,and the macro deformation of large area composite plate was reduced by adopting rigid + flexible comprehensive protection device.The macroscopic deformation of the plate was influenced by the charge mass ratio,the characteristics of the protective device and the action impulse of the explosive,and the influencing factors of these three factors decreased in turn.The macroscopic deformation caused by double vertical explosive welding can be further solved by appropriately reducing charge mass ratio,optimizing protection device and popularizing double vertical explosive welding + rolling technology.
- double vertical explosive welding /
- macro deformation /
- explosion mechanics /
- characteristic lines

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参考文献(13)

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