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首页> 外文期刊>Journal of geotechnical and geoenvironmental engineering >Strength Properties of JSC-1A Lunar Regolith Simulant
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Strength Properties of JSC-1A Lunar Regolith Simulant

机译：JSC-1A月球雷戈利斯模拟剂的强度特性

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摘要

The paper presents a description of physical properties and a characterization of shear strength behavior of JSC-1A lunar regolith simulant. Specific gravity of solids, particle size analysis, and minimum and maximum index densities were measured according to ASTM standards. A series of axisymmetric triaxial experiments were conducted on JSC-1A specimens at two densities and a wide range of confining pressures. The stress-strain and volume change behavior of JSC-1A is presented and discussed. The results show that the peak friction and dilatancy angles are highly influenced by specimen density and confining pressure. Two models were developed to predict the peak friction and dilatancy angle, as a function of relative density and mean effective stress at the critical state. It was found that JSC-1A closely resembles the morphology and specific gravity of solids of some of Apollo regolith samples reported in the literature. Shear strength properties are presented within the framework of Mohr-Coulomb and friction-dilatancy theories. The effect of reduced moon gravity on strength parameters is also presented and discussed.
机译：本文介绍了JSC-1A月球重钙石模拟物的物理性质和抗剪强度特性的描述。根据ASTM标准测量固体的比重，粒度分析以及最小和最大指数密度。在两种密度和宽范围的围压下，在JSC-1A标本上进行了一系列轴对称三轴实验。介绍并讨论了JSC-1A的应力应变和体积变化行为。结果表明，峰值摩擦力和剪胀角受试样密度和围压的影响很大。开发了两个模型来预测在临界状态下的峰值摩擦力和剪胀角与相对密度和平均有效应力的关系。发现JSC-1A与文献中报道的一些阿波罗重钙石样品的固体形态和比重非常相似。剪切强度特性在Mohr-Coulomb和摩擦剪胀理论的框架内给出。还介绍并讨论了月球重力降低对强度参数的影响。

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