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铝-铝爆炸焊接界面波形成与特征

李芮宇, 孙宇新, 付艳恕, 孙其然, 赵亚运

李芮宇, 孙宇新, 付艳恕, 孙其然, 赵亚运. 铝-铝爆炸焊接界面波形成与特征[J]. 焊接学报, 2017, 38(5): 92-95,107. DOI: 10.12073/j.hjxb.20170520
引用本文: 李芮宇, 孙宇新, 付艳恕, 孙其然, 赵亚运. 铝-铝爆炸焊接界面波形成与特征[J]. 焊接学报, 2017, 38(5): 92-95,107. DOI: 10.12073/j.hjxb.20170520
LI Ruiyu, SUN Yuxin, FU Yanshu, SUN Qiran, ZHAO Yayun. Formation and characterization of Al-Al explosive welding interfaces[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(5): 92-95,107. DOI: 10.12073/j.hjxb.20170520
Citation: LI Ruiyu, SUN Yuxin, FU Yanshu, SUN Qiran, ZHAO Yayun. Formation and characterization of Al-Al explosive welding interfaces[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2017, 38(5): 92-95,107. DOI: 10.12073/j.hjxb.20170520

铝-铝爆炸焊接界面波形成与特征

基金项目: 国家自然科学基金资助项目(11202093)

Formation and characterization of Al-Al explosive welding interfaces

  • 摘要: 文中通过试验观察与数值模拟相结合,尝试分析界面波的形成与结构特征.对2024铝开展系列准对称爆炸焊接,获得了界面波结构特征随装药比变化样品,并基于Autodyn软件中的光滑粒子法对铝-铝爆炸焊接斜碰撞过程进行了模拟,获得与试验现象吻合良好的计算结果.结果表明,装药比的提高使得再入射流厚度和界面波长波幅增加,且界面更加连续;装药比的提高对再入射流速度的影响不大;再入射流量的逐渐增多使得基板承受的剪切应力增大,进而导致界面出现平直到波状的渐变.分析得到的铝-铝爆炸焊接界面波特征随装药比的变化规律以及所使用的数值方法为相关分析提供了有用的参考.
    Abstract: In this paper, a series of Al-Al quasi-symmetric explosive welding experiments were carried out and then the samples with variation charge ratio were obtained. Furthermore, the processes of Al-Al oblique collision were simulated based on smooth particle hydrodynamic method (SPH) in Autodyn, and it was found that the simulation results were in agreement with the experiments. It is can be conclude that, first the wave length and amplitude increased with progressive increasing of charge ratio, as well as the thickness of re-entrant jet. In addition, the interfaces became more continuous. Second, the influence of charge ratio on re-entrant jet velocity was rare. Third, the shear stress of base plate enhanced with the increase of re-entrant jet, which leads to the interface gradual changing from straightness to wave. The variation laws of Al-Al explosive welding interfaces with charge ratio and the numerical method used in this paper will be beneficial for correlation research.
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  • 期刊类型引用(1)

    1. 薛海涛,魏鑫,郭卫兵,张小明. 活性元素Ti和SiO_2界面结合机制的第一性原理计算. 焊接学报. 2020(01): 67-71+100-101 . 本站查看

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  • 收稿日期:  2015-07-01

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