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首页> 外文期刊>Mathematical Problems in Engineering >Study on the Elastoplastic Damage-Healing Coupled Constitutive Model of Mudstone
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Study on the Elastoplastic Damage-Healing Coupled Constitutive Model of Mudstone

机译：泥岩弹塑性损伤-愈合耦合本构模型研究

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摘要

Under the effect of high ground stress and water-rock chemical interaction, the fractures in the damaged mudstone wound undergo a self-healing process and recover the physical and mechanical properties, which has a significant impact on the wall-rock's stability of high level radioactive waste repository and the migration of radioactive nuclide. According to the general thermodynamics and continuum damage mechanics, an internal variable describing mudstone healing properties is introduced and an elastoplastic damage-healing model reflecting mudstone deformation, damage, and self-healing evolution is put forward. This model is used to simulate the triaxial compression test of mudstone under different confining pressures, whose simulated results are compared with the test data. It is indicated that the model could embody the main mechanical properties of mudstone with the healing effect in an effective way, and the healing part of the model has a great influence on the simulated results.
机译：在高地应力和水-岩石化学相互作用的作用下，受损泥岩伤口的裂缝经历了自愈过程，并恢复了物理和机械性能，这对高放射性放射性的围岩稳定性产生了重要影响。废物储存库和放射性核素的迁移。根据一般的热力学和连续介质破坏机理，引入了描述泥岩愈合特性的内部变量，提出了反映泥岩变形，破坏和自我修复演化的弹塑性损伤修复模型。该模型用于模拟不同围压下泥岩的三轴压缩试验，并将模拟结果与试验数据进行比较。结果表明，该模型可以有效地体现泥岩的主要力学性质，具有一定的修复作用，该模型的修复部分对模拟结果影响很大。

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  • 来源
    《Mathematical Problems in Engineering》 |2017年第6期|6431607.1-6431607.7|共7页
  • 作者

    Xu Jie; Qu Jiawang; Gao Yufeng; Xu Ning;

  • 作者单位

    Hohai Univ, Geotech Res Inst, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210098, Jiangsu, Peoples R China;

    Wuhan Surveying Geotech Res Inst Co Ltd, MCC, Wuhan 430080, Peoples R China;

    Hohai Univ, Geotech Res Inst, Nanjing 210098, Jiangsu, Peoples R China|Hohai Univ, Minist Educ Geomech & Embankment Engn, Key Lab, Nanjing 210098, Jiangsu, Peoples R China;

    Laixi Water Conservancy Bur, Laixi 266600, Peoples R China;

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