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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >From discrete to continuous numerical identification of a geomaterial with an internal length
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From discrete to continuous numerical identification of a geomaterial with an internal length

机译：从内部长度的离散到连续数值识别

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摘要

A geomaterial called TexSol and composed of sand and wires was investigated by numerical experiments in order to determine its geometrical and mechanical parameters, such as tortuousness of the wire, anisotropy and characteristic length. This stage is essential for studying a material with an obvious non-local behavior. Investigations by discrete elements highlighted that the characteristic length was dependant on the loading level. These simulations provided access to variables that standard physical experiments cannot provide. Some parameters of a continuous model of TexSol were identified through discrete numerical experiments using a classic procedure. The other parameters were determined by finite element method updating.
机译：为了确定其几何和机械参数，例如线的曲折度，各向异性和特征长度，通过数值实验研究了一种由TexSol组成的，由沙子和金属丝组成的土工材料。该阶段对于研究具有明显非局部行为的材料至关重要。分立元件的研究表明，特征长度取决于载荷水平。这些模拟提供对标准物理实验无法提供的变量的访问。 TexSol连续模型的一些参数是使用经典方法通过离散数值实验确定的。其他参数通过有限元方法更新确定。

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