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An approach of peridynamic modeling associated with molecular dynamics for fracture simulation of particle reinforced metal matrix composites

机译：一种与颗粒增强金属基复合材料骨折模拟分子动力学相关的逆向模拟方法

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摘要

A peridynamic (PD) model that involves the interface constitutive relation constructed by molecular dynamics (MD) is proposed to simulate the mechanical properties of the particle reinforced metal matrix composites and reproduce the similar failure mode in the experiments. In our numerical simulation, the constitutive models of PD bond are proposed and employed to simulate the Al-Al and SiC-SiC systems. Then, a MD simulation is carried out to characterize the Al-SiC interface. The predicted results are validated by comparing with the existing researches. After that, a concluded constitutive model of interface bond is applied to PD simulations. The performance of the modified theoretical models is demonstrated by two quasi-static simulations with and without considering the strengthening effects that SiC inclusions have on Al-matrix. Besides, the proposed model is also applied to predict the failure behaviors of the overall composite system successfully. The obtained results indicate that the constructed approach is applicative in investigating both the quasi-static and dynamic problems.
机译：提出了一种涉及分子动力学（MD）构成的界面本构关系的白颌动态（PD）模型，以模拟颗粒增强金属基质复合材料的机械性能并在实验中再现类似的故障模式。在我们的数值模拟中，提出了PD键组的本构模型，并采用了模拟Al-A1和SiC-SiC系统。然后，执行MD仿真以表征AL-SIC接口。通过与现有研究相比，通过比较验证预测结果。之后，将界面键的结束结构型模型应用于PD模拟。通过两种准静态模拟来证明改进的理论模型的性能，并且不考虑SiC夹杂物对Al-矩阵的强化效果。此外，还应用了所提出的模型来预测整体复合系统的故障行为成功。所获得的结果表明，构建的方法是在研究准静态和动态问题方面的应用。

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  • 来源
    《Composite Structures》 |2020年第10期|112613.1-112613.11|共11页
  • 作者

    Zhan J. M.; Yao X. H.; Han F.;

  • 作者单位

    South China Univ Technol Dept Engn Mech Guangzhou 510640 Peoples R China;

    South China Univ Technol Dept Engn Mech Guangzhou 510640 Peoples R China;

    Dalian Univ Technol Int Res Ctr Computat Mech Dept Engn Mech State Key Lab Struct Anal Ind Equipment Dalian 116023 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Peridynamics; Interface; Molecular dynamics; Metal matrix composites;

    机译：白扮演;界面;分子动力学;金属矩阵复合材料;

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