铝/不锈钢双金属管爆炸焊接数值模拟  

Numerical simulation of explosive welding of aluminum/stainlesssteel bimetallic tubes

作　　者：缪广红 马秋月 胡昱 周大鹏 孙志皓 刘自伟 马宏昊[4] 沈兆武[4] MIAO Guanghong;MA Qiuyue;HU Yu;ZHOU Dapeng;SUN Zhihao;LIU Ziwei;MA Honghao;SHEN Zhaowu(School of Mechanics and Optoelectronics Physics,Anhui University of Science and Technology,Huainan 232001,China;School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;CCTEG Huaibei Blasting Technology Research Institute Co.,Ltd.,Huaibei 235000,China;CAS Key Laboratory of Mechanical Behavior and Design of Materials,University of Science and Technology of China,Hefei 230027,China)

机构地区：[1]安徽理工大学力学与光电物理学院,安徽淮南232001 [2]安徽理工大学土木建筑学院,安徽淮南232001 [3]中煤科工集团淮北爆破技术研究院有限公司,安徽淮北235000 [4]中国科学技术大学中国科学院材料力学行为和设计重点试验室,合肥230027

出　　处：《兵器装备工程学报》2024年第2期238-245,共8页Journal of Ordnance Equipment Engineering

基　　金：国家自然科学基金项目(11902003,51874267);安徽省重点研究与开发计划项目(2022a05020021);高校优秀青年骨干人才国外访学研修项目(gxgwfx2019017)。

摘　　要：以铝/不锈钢金属管为研究对象,利用ANSYS/LS-DYNA有限元软件结合SPH-FEM耦合法和拉格朗日法对其爆炸焊接过程进行了数值模拟。研究了炸药爆速对复合管结合质量的影响。结果表明:炸药爆速对基复管的塑性变形和复管碰撞速度影响较大,塑性变形和复管碰撞速度过小或过大均不能实现良好结合;在炸药爆速为1 950~2 150 m/s左右时,基复管结合质量较好,这与试验所得结论一致;拉格朗日法的前期建模较为简洁,模拟过程中SPH-FEM耦合法耗时较多;拉格朗日法所测得的碰撞速度与理论计算值误差较大,且SPH-FEM耦合算法能较好地处理高速爆炸冲击问题。Taking aluminum/stainless steel metal pipes as the research object,the explosive welding process is simulated by ANSYS/LS-DYNA finite element software combined with SPH-FEM coupling algorithm and Lagrange algorithm.The influence of explosive detonation velocity on the bonding quality of composite pipe is studied.The results show that the explosive detonation velocity has a great influence on the plastic deformation and the impact velocity of the base clad tube,the plastic deformation and the impact velocity of the clad tube cannot achieve a good combination if they are too small or too large;When the detonation velocity of the explosive is about 1950 m/s to 2150 m/s,the bonding quality of the base tube is good,which is consistent with the conclusion obtained from the experiment;The early modeling of Lagrange algorithm is relatively simple,and the SPH-FEM coupling algorithm takes more time in the simulation process;The collision velocity measured by the Lagrange algorithm has a large error with the theoretical calculation value,and the SPH-FEM coupling algorithm can better deal with the high-speed explosive impact problem.

关 键 词：爆炸焊接 数值模拟 拉格朗日算法 SPH-FEM耦合算法 

分 类 号：TG456.6[金属学及工艺—焊接]