3D finite element simulation of explosive welding of three-layer plates

• Published in: Science China. Physics, mechanics & astronomy Vol. 54; no. 5; pp. 890 - 896
• Main Authors: Sui, GuoFa, Li, JinShan, Sun, Feng, Ma, Bei, Li, HongWei
• Format: Journal Article
• Language: English
• Published: Heidelberg SP Science China Press 01.05.2011; Springer Nature B.V
• Subjects: Astronomy; Bonding; Classical and Continuum Physics; Computer simulation; Copper; Damping; Detonation; Detonation waves; Explosive welding; Finite element method; Mathematical analysis; Mathematical models; Observations and Techniques; Physics; Physics and Astronomy; Plates; Research Paper; Three dimensional; Three dimensional models; Welding; 有限元模拟; 爆炸模式; 爆炸焊接; 爆轰波; 结合机理; 过程元模型; three-layer plate; explosive amount; detonation approach; numerical simulation; explosive welding
• ISSN: 1674-7348; 1869-1927
• DOI: 10.1007/s11433-011-4314-0

A 3D t＇mite element model of the explosive welding process of three-layer plates with materials of steel-copper-copper is es- tablished. Based on the presented model, the bonding mechanism is simulated and analyzed, different detonation modes are also comparatively studied to indicate the driving force spread in few microseconds. The results show that the three layer plates bond together after many times of impact between the flyers and the base driven by detonation wave, which is damping rapidly at each impact with wavelength decreasing. The pressure at the detonation point is minimal, which induces non-bonding of the plates here. Detonation wave propagates in concentric circle both under side-midpoint detonation mode and under center-point detonation mode, but the movement of the flyer is different, which makes non-bonding easily occur at the end of detonation under side-midpoint detonation and at the center of the plate under center-point detonation.