3D finite element simulation of explosive welding of three-layer plates
3D finite element simulation of explosive welding of three-layer plates
复制标题
三层板爆炸焊接三维有限元模拟
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
Hong
中科院分区：
文献类型：
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作者：
Guo;Jinshan Li;Feng Sun;Beifang Ma;Hong
建立了钢-铜-铜三层板爆炸焊接过程的三维有限元模型。在此基础上，模拟分析了不同爆轰模式下的粘结机理，并对不同爆轰模式下的驱动力传播进行了对比研究。结果表明，在爆轰波的驱动下，飞片与基座多次碰撞后，三层板结合在一起，每次碰撞后，随着爆轰波波长的减小，三层板迅速衰减。爆炸点处的压力最小，这导致此处的板不结合。无论是侧面中点爆轰还是中心点爆轰，爆轰波均沿同心圆传播，但飞片的运动方式不同，使得侧面中点爆轰时在爆轰末端容易发生不粘结，而中心点爆轰时在板中心容易发生不粘结。
A 3D finite element model of the explosive welding process of three-layer plates with materials of steel-copper-copper is established. 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.