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Development of a dynamic constitutive model with particle damage and thermal softening for Al/SiCp composites

机译：AL / SICP复合材料颗粒损伤动态本构模型的研制

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摘要

A dynamic constitutive model of Al/SiCp composites can not only promote the application of composites in frontier fields, but also guarantee the reliability of the simulation modeling and analytical modeling of the composites. However, the influence of particles damage and thermal softening has not been considered in the dynamic constitutive model of Al/SiCp composites established so far. Therefore, a dynamic constitutive model of Al/SiCp composites with particle damage and thermal softening was established based on the Weibull statistical distribution, the Eshelby equivalent inclusion method, and the constitutive relation of the Al matrix. Then, this dynamic constitutive model was verified. The verification results indicated that the dynamic constitutive model with particle damage and thermal softening was able to predict the dynamic compressive behavior of various Al/SiCp composites accurately. In addition, theoretical calculations of the parameters of the dynamic constitutive model were analyzed to reveal the effect of particle damage and thermal softening on the dynamic compressive behavior. The result shows that an increase in the probability of particle damage in Al/SiCp composites reduces the strengthening effect of the particles. An increase in temperature enhances the fluidity of the matrix, and the dynamic compressive behavior of the Al/SiCp composite gradually became closer to those of tough matrix materials.
机译：Al / SICP复合材料的动态本构模型不仅可以促进了在边境字段中的复合材料的应用，而且保证了复合材料的模拟建模和分析建模的可靠性。然而，在迄今为止建立的Al / SICP复合材料的动态本构模型中尚未考虑颗粒损伤和热软化的影响。因此，基于Weibull统计分布，eShelby等效夹杂物和Al基质的组成关系建立了具有颗粒损伤和热软化的Al / SICP复合材料的动态本构体模型。然后，验证了该动态本构模型。验证结果表明，具有颗粒损伤和热软化的动态本构模型能够精确地预测各种Al / SICP复合材料的动态压缩行为。此外，分析了动态本构模型参数的理论计算，揭示了颗粒损伤和热软化对动态压缩行为的影响。结果表明，Al / SICP复合材料中颗粒损伤概率的增加降低了颗粒的强化效果。温度的增加增强了基质的流动性，并且Al / SiCP复合材料的动态压缩行为逐渐变得更接近坚韧的基质材料。

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  • 来源
    《Composite Structures》 |2020年第3期|111856.1-111856.15|共15页
  • 作者

    Sun Wei; Duan Chunzheng; Yin Wendian;

  • 作者单位

    Dalian Univ Technol Sch Mech Engn Key Lab Minist Educ Precis & Nontradit Machining Dalian Liaoning Peoples R China;

    Dalian Univ Technol Sch Mech Engn Key Lab Minist Educ Precis & Nontradit Machining Dalian Liaoning Peoples R China;

    Dalian Univ Technol Sch Mech Engn Key Lab Minist Educ Precis & Nontradit Machining Dalian Liaoning 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

    Al/SiCp composites; Constitutive model; Particle damage; Thermal softening; Dynamic compression;

    机译：AL / SICP复合材料;本构模型;颗粒损伤;热软化;动态压缩;

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