缪广红,陈龙,刘波,等.炸药层厚度对410S/Q345R爆炸焊接质量影响的数值模拟[J].精密成形工程,2025,17(3):160-166.
MIAO Guanghong,CHEN Long,LIU Bo,et al.Numerical Simulation of the Effect of Explosive Layer Thickness on Explosive Welding Quality of 410S/Q345R[J].Journal of Netshape Forming Engineering,2025,17(3):160-166. |
| 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 |
| 投稿时间：2024-07-20 |
| DOI：10.3969/j.issn.1674-6457.2025.03.018 |
| 中文关键词: 爆炸焊接 数值模拟 炸药层厚度 碰撞速度 碰撞压力 碰撞角 |
| 英文关键词: explosive welding numerical simulation explosive layer thickness collision velocity collision pressure collision angle |
| 基金项目: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) |
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| 中文摘要: |
| 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vp(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vp=2vcsin(β/2)(vc为炸药爆速，β为碰撞角)具有一定的准确性。 |
| 英文摘要: |
| 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 model were compared and analyzed When the explosive layer thickness was 15, 25 and 35 mm, the collision velocity of the composite 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 displacement 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 collision velocity vp (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 theoretical calculation results, indicating that the theoretical calculation formula vp=2vcsin(β/2) (vc is explosion velocity and β is collision angle) has certain accuracy. |
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