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首页> 外文期刊>Journal of Materials Research >Gamma radiation induced compressive response of silicon rubber foam: Experiments and modeling
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Gamma radiation induced compressive response of silicon rubber foam: Experiments and modeling

机译：伽马辐射诱导硅橡胶泡沫的压缩响应：实验和建模

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摘要

Utilizing the experimental and modeling approaches, the Gamma radiation effects on stress responses of the silicon rubber foam under quasistatic compression are investigated. In the experimental work, the samples of the silicon rubber and the silicon rubber foams are quasistatically compressed before and after the Gamma radiation (a dose of 500 kGy and a dose rate of 100 Gy/min). The data reveal that the Gamma radiation obviously increases the material hardness, e.g., the compressive stresses of the silicon rubber and the silicon rubber foams both increase over 5 times as the strain is 20%. In the simulation work, a multiscale method combined with finite element method is developed to numerically predict the compressive stress of the silicon rubber foams. The microscale models are first constructed based on the real microstructures of the silicon rubber foams. The compressive stress and strain relation before and after the Gamma radiation is then simulated and obtained utilizing the phenomenological constitutive models based on the testing data of the silicon rubber. The simulation reveals that the Gamma radiation strongly affects the compressive response of the microscale models. The stress responses of the microscale models are then transferred into the macroscale models. The results also prove that the Gamma radiation obviously increases the hardness of the macroscale models. Data comparison shows that the numerical results agree with the testing data well, which verifies the developed method. The present work develops a new method to predict the radiation effects on mechanical properties of rubber foams.
机译：利用实验性和建模方法，研究了在Quasistatic压缩下对硅橡胶泡沫的应力响应的伽马辐射效应。在实验工作中，硅橡胶的样品和硅橡胶泡沫在γ辐射之前和之后拟定压缩（500kgy的剂量和100Gy / min的剂量率）。数据表明，伽马辐射明显增加了材料硬度，例如，硅橡胶的压缩应力和硅橡胶泡沫的压缩应变均增加5倍，因为该菌株为20％。在模拟工作中，开发了一种多尺度方法与有限元方法结合的，以数值预测硅橡胶泡沫的压缩应力。首先基于硅橡胶泡沫的真实组织构建微观型号。然后模拟γ辐射之前和之后的压缩应力和应变关系利用基于硅橡胶的测试数据的现象学组成型模型来模拟和获得。仿真显示伽马辐射强烈影响微观模型的压缩响应。然后将微观模型的应力响应转移到Macroscale模型中。结果还证明γ辐射明显提高了宏观模型的硬度。数据比较表明，数值结果与测试数据很好地同意，这符合开发方法。目前的作品开发了一种预测橡胶泡沫机械性能的辐射效应的新方法。

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  • 来源
    《Journal of Materials Research》 |2019年第13期|2194-2200|共7页
  • 作者

    Wang Huyi; Qiu Yong; Hu Wenjun; Chen Yongmei;

  • 作者单位

    CAEP Inst Syst Engn Mianyang 621999 Sichuan Peoples R China|Shock & Vibrat Engn Mat & Struct Key Lab Sichuan Mianyang 621999 Sichuan Peoples R China;

    CAEP Inst Syst Engn Mianyang 621999 Sichuan Peoples R China|Shock & Vibrat Engn Mat & Struct Key Lab Sichuan Mianyang 621999 Sichuan Peoples R China;

    CAEP Inst Syst Engn Mianyang 621999 Sichuan Peoples R China|Shock & Vibrat Engn Mat & Struct Key Lab Sichuan Mianyang 621999 Sichuan Peoples R China;

    CAEP Inst Syst Engn Mianyang 621999 Sichuan Peoples R China|Shock & Vibrat Engn Mat & Struct Key Lab Sichuan Mianyang 621999 Sichuan Peoples R China;

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

    radiation effects; foam; hardness;

    机译：辐射效应;泡沫;硬度;

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