Abstract Peridynamics was originally developed to model spontaneously emerged discontinuities such as crack propagation and progressive failure. In this paper, contrary to typical peridynamic applications in the realm of modeling of discontinuities, a modeling approach is proposed in the framework of non-ordinary state-based peridynamics to simulate impact-driven solid-state welding processes that can effectively join a wide variety of similar and dissimilar combinations of materials. A scheme to model formations of metallurgical bonds resulting from severe plastic deformation due to high-velocity impact is developed in virtue of peridynamic bonds. The proposed model is of combined Lagrangian-Eulerian nature, given that nonlocal interactions are established on both reference and deformed configurations. Impact bonding processes of single- and bi-material joints are successfully simulated and validated. Distinctive morphological features of bonding interface are reproduced. Effectiveness and robustness of the proposed modeling approach are demonstrated by a numerical study of influences of processes variables on the morphology and stability of interface features.

中文翻译：

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一种固态冲击键合近场动力学建模方法及界面形貌模拟

摘要 近场动力学最初是用来模拟自发出现的不连续性，如裂纹扩展和渐进式失效。在本文中，与不连续建模领域中典型的近场动力学应用相反，在基于非普通状态的近场动力学框架中提出了一种建模方法来模拟冲击驱动的固态焊接过程，该过程可以有效地连接各种相似和不同的材料组合。借助近场动力学键，开发了一种模拟由于高速冲击引起的严重塑性变形而导致的冶金键形成的方案。鉴于非局部相互作用是在参考和变形配置上建立的，所提出的模型具有组合拉格朗日-欧拉性质。成功模拟和验证了单材料和双材料接头的冲击粘合过程。再现了键合界面的独特形态特征。通过对过程变量对界面特征形态和稳定性影响的数值研究，证明了所提出的建模方法的有效性和稳健性。