应用数学和力学2026，Vol.47Issue(9)：1117-1131,15.DOI:10.21656/1000-0887.460147
间距对含中间层爆炸焊接影响的数值模拟
Numerical Simulation of Stand-Off Distance Effects on Explosive Welding With an Intermediate Layer
摘要
Abstract
the stand-off distance effects on explosive welding with an interlayer were investigated,with the AN-SYS/LS-DYNA finite element software.The 3D numerical simulations of the explosive welding process were conducted for the commercially pure titanium(TP270C),the duplex stainless steel(SUS821L1),and the inter-layer(SUS821L1),with 2 distinct algorithms:the arbitrary Lagrangian-Eulerian(ALE)method and the smoothed particle hydrodynamics-finite element method(SPH-FEM)coupling algorithm.The behaviors of the flyer plate under varying stand-off distances(5 mm,10 mm,15 mm/2 mm),including the vertical displace-ment,the collision velocity,the collision pressure,and the plastic deformation of the interlayer,were system-atically analyzed across both algorithms.The simulation results show that,the vertical displacement of the flyer plate exceeds the stand-off distance between the base plate and the flyer plate,and the collision velocity falls within the explosive welding window.The collision velocity,the collision pressure of the flyer plate,the plastic deformation of the interlayer,the partitioned kinetic energy of the flyer plate and the collision pressure by the interlayer,all increase with the stand-off distance.All 3 stand-off distances achieve successful welding under the action of the interlayer.The highest explosive welding quality occurs at a stand-off distance of 15 mm,which matches the experimental results.Furthermore,numerical simulations based on 2 control groups'explo-sive thicknesses:40 mm with stand-off distances of 30 mm/2 mm,and 38 mm with stand-off distances of 55 mm/2 mm,were performed.The results demonstrate that,reducing the explosive thickness and increasing the stand-off distance between the interlayer and the flyer plate during the acceleration phase achieve welding effects identical to those of the original experiments.This work ensures welding quality,reduces the cost of ex-plosive welding experiments,and provides theoretical guidance for engineering applications.关键词
间距/爆炸焊接/中间层/ALE法/SPH-FEM法Key words
stand-off distance/explosive welding/intermediate layer/ALE algorithm/SPH-FEM algorithm分类
数理科学引用本文复制引用
缪广红,倪亚东,魏正梅,吴伟达,田广阔..间距对含中间层爆炸焊接影响的数值模拟[J].应用数学和力学,2026,47(9):1117-1131,15.基金项目
国家自然科学基金(11902003) （11902003）
