炸药层厚度对410S/Q345R爆炸焊接质量影响的数值模拟  

Numerical Simulation of the Effect of Explosive Layer Thickness on Explosive Welding Quality of 410S/Q345R

作　　者：缪广红 陈龙[2] 刘波 董继蕾 朱志强 魏正梅 吴伟达 周大鹏 MIAO Guanghong;CHEN Long;LIU Bo;DONG Jilei;ZHU Zhiqiang;WEI Zhengmei;WU Weida;ZHOU Dapeng(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Anhui Huainan 232001,China;School of Mechanics and Optoelectronics Physics,Anhui University of Science and Technology,Anhui Huainan 232001,China;Anhui Hongxing Mechanical and Electrical Technology Co.,Ltd.,Hefei 231135,China;CCTEG Huaibei Blasting Technology Research Institute Co.,Ltd.,Anhui Huaibei 235000,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]安徽红星机电科技股份有限公司,合肥231135 [4]中煤科工集团淮北爆破技术研究院有限公司,安徽淮北235000

出　　处：《精密成形工程》2025年第3期160-166,共7页Journal of Netshape Forming Engineering

基　　金：国家自然科学基金(11902003);中煤科工集团重庆研究院自立科研开发项目(2023YBXM58)。

摘　　要：目的研究炸药层厚度对复合板爆炸焊接质量的影响。方法将ANSYSY/LS-DYNA软件与光滑粒子流体动力学有限元方法(SPH-FEM)相结合,对不同炸药层厚度(15、25、35 mm)的爆炸焊接过程进行三维数值模拟,采用厚度为2 mm的410S为复板、厚度为20 mm的Q345R为基板,根据材料相应的静态参数,计算焊接过程中的动态参数,并以此建立焊接窗口,对试验模型的速度、位移、压力、碰撞角进行对比分析。结果当炸药层厚度为15、25、35 mm时,复板的碰撞速度分别为493、579、595 m/s,均落在焊接窗口内,随着炸药层厚度的增加,复板的碰撞速度和碰撞压力也在增加,复板的竖向位移大于其间隙0.6 cm。当炸药层厚度为15、25、35 mm时,基复板结合处(特征单元A、B)实际测量的碰撞角分别为13.10°、15.71°和15.92°,理论碰撞角分别为12.87°、15.12°和15.54°,误差幅度为1.79%~3.90%。结论增加炸药层的厚度可以有效增加基复板的碰撞速度和碰撞压力,复板的竖向位移均大于其间隙0.6 cm,碰撞速度v_(p)(493、579、595 m/s)均落在焊接窗口380~600 m/s内,表明复合板焊接质量良好,并且碰撞角的数值模拟结果与理论计算结果基本吻合,说明理论计算公式v_(p)=2_(v)csin(β/2)(v_(c)为炸药爆速,β为碰撞角)具有一定的准确性。The work aims to study the effect of the explosive layer thickness on the quality of the explosive welding of the composite plate.ANSYSY/LS-DYNA software and SPH-FEM(Smooth Particle Hydrodynamics Finite Element Method)were combined to numerically simulate,the explosive welding process with different explosive layer thicknesses(15,25,35 mm)in three dimensions.410S with a thickness of 2 mm and Q345R with a thickness of 20 mm were used as the base plate,and the dynamic parameters in the welding process were calculated according to the corresponding static parameters of the materials.Based on this,the welding window was established,and the velocity,displacement,pressure and collision angle of the test mod-el were compared and analyzed When the explosive layer thickness was 15,25 and 35 mm,the collision velocity of the compo-site plate was 493,579 and 595 m/s respectively,which all fell within the welding window.With the increase of the thickness of the explosive layer,the collision velocity and collision pressure of the composite plate also increased,and the vertical displace-ment of the composite plate was greater than its gap by 0.6 cm.Under the three groups of different explosive layer thicknesses,the actually measured collision angles at the bonding point of base composite plate(characteristic units A and B),were 13.10°,15.71°and 15.92°,respectively and the theoretical collision angles were 12.87°,15.12°and 15.54°respectively,and the error ranged from 1.79%to 3.90%.Increasing the thickness of the explosive layer can effectively increase the collision velocity and pressure of the composite plate.The vertical displacement of the composite plate is greater than its gap by 0.6 cm,and the colli-sion velocity v_(p)(493,579 and 595 m/s)falls within the welding window of 380-600 m/s,which shows that the welding quality of the composite plate is good and the numerical simulation results of the collision angle are basically consistent with the theo-retical calculation results,indicating that the theoretical calculati

关 键 词：爆炸焊接 数值模拟 炸药层厚度 碰撞速度 碰撞压力 碰撞角 

分 类 号：TG456.6[金属学及工艺—焊接]