装药方式对铜/钢爆炸焊接界面波的影响及波形成机理  

Effect of Charge Mode on Interface Wave of Copper/Steel Explosive Welding and Wave Formation Mechanism

作　　者：缪广红[1,2] 马雷鸣 李雪交 艾九英[3] 赵文慧 马宏昊 沈兆武[5] MIAO Guanghong;MA Leiming;LI Xuejiao;AI Jiuying;ZHAO Wenhui;MA Honghao;SHEN Zhaowu(State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan 232001,Anhui,China;School of Mechanics and Optoelectronics Physics,Anhui University of Science and Technology,Huainan 232001,Anhui,China;School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,Anhui,China;School of Chemical Engineering,Anhui University of Science and Technology,Huainan 232001,Anhui,China;CAS Key Laboratory of Mechanical Behavior and Design of Materials,University of Science and Technology of China,Hefei 230027,Anhui,China)

机构地区：[1]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001 [2]安徽理工大学力学与光电物理学院,安徽淮南232001 [3]安徽理工大学土木建筑学院,安徽淮南232001 [4]安徽理工大学化学工程学院,安徽淮南232001 [5]中国科学院材料力学行为和设计重点实验室,中国科学技术大学,安徽合肥230027

出　　处：《高压物理学报》2020年第2期124-132,共9页Chinese Journal of High Pressure Physics

基　　金：国家自然科学基金(11902003,51874267);安徽省高校自然科学基金重点项目(KJ2017A089,KJ2018A0090);高校优秀青年骨干人才国外访学研修项目(gxgwfx2019017);安徽省自然科学基金(1808085QA06)。

摘　　要：为了改善爆炸焊接质量,解决高噪低效的问题,选取Cu为复板、Q235钢为基板,采用LS-DYNA软件和光滑粒子流体动力学方法分别设计了均匀布药和梯形布药方案,研究了硝铵炸药对爆炸焊接界面波的影响。均匀布药结果显示:沿着爆轰方向碰撞压力逐渐增大;炸药量越多,碰撞压力越大,界面波波形越大。梯形布药方案中,通过改变炸药起爆端和末端的高度,设计了4种方案,结果显示:梯形布药可以消除爆炸焊接界面波不均匀现象,使界面波形尺寸基本保持一致,而且节省了炸药用量;当起爆端和末端的高度分别为67.2 mm和42.0 mm时,波形效果最好。通过研究界面波的形成过程可知,SPH法模拟的界面波形成过程与复板流侵彻机理的一致性较好,证明了复板流侵彻机理解释界面波形成过程的有效性。In order to improve the quality of explosive welding and to solve the problem of high noise and low efficiency,Cu is selected as the flyer plate and Q235 steel is used as the base plate.The LS-DYNA software and the smoothed particle hydrodynamics(SPH)method are used to design the uniform distribution and the ladder distribution scheme,and the effect of the nitrate explosive on the explosive welding interface wave is studied.The results of the uniform distribution show that the collision pressure gradually increases along the detonation direction;the more amount of explosive,the greater the collision pressure and the higher the interface wave shape.In the ladder distribution scheme,four schemes are designed by changing the height of the initiation and the end of the explosive.The results show that the ladder distribution can eliminate the uneven phenomenon of the interface wave in the explosion welding,and keep the size of interface waveform consistent,and the amount of explosives will be saved.The waveform is best when the height of the initiation and the end of detonation is 67.2 mm and 42.0 mm,respectively.By studying the formation process of interface wave,the SPH results of formation process of interface wave simulated is in good agreement with the jet indentation mechanism,which shows the effectiveness of the jet indentation mechanism to explaining the formation process of interface wave.

关 键 词：炸药量 布药方式 梯形布药 界面波 

分 类 号：O389[理学—流体力学]