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首页> 外文期刊>Journal of teoretical and applied mechanics >A STEREOLOGICAL UBIQUITIFORMAL SOFTENING MODEL FOR CONCRETE
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A STEREOLOGICAL UBIQUITIFORMAL SOFTENING MODEL FOR CONCRETE

机译：混凝土的立体万有形式软化模型

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摘要

A stereological ubiquitiformal softening model for describing the softening behavior of concrete under quasi-static uniaxial tensile loadings is presented in this paper. In the model, both the damage evaluation process of fracture cross-sections and their distribution along the specimens axis are taken into account. The numerical results of a certain kind of full grade concrete made of crushed coarse aggregate are found to be in good agreement with the experimental data. Moreover, an experiental relation between the lower bound to the scale invariance of concrete and its tensile strength is also obtained by data fitting of the experimental data, which provides an effective approach to determine the lower bound to scale invariance of concrete.
机译：本文提出了一种用于描述混凝土在准静态单轴拉伸载荷下的软化行为的立体泛形软化模型。在模型中，考虑了断裂截面的损伤评估过程及其沿试样轴的分布。发现某类由碾压的粗骨料制成的全等级混凝土的数值结果与实验数据吻合良好。此外，还通过实验数据的拟合获得了混凝土尺度不变性的下限与抗张强度之间的经验关系，为确定混凝土尺度不变性的下限提供了一种有效的方法。

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