arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0907.4162cond-mat.mtrl-sci
收藏

高裂纹密度固体的有效弹性模量

Effective Elastic Moduli in Solids with High Crack Density

Robert Spatschek, Clemens Gugenberger, Efim Brener

摘要:

我们研究了通过随机分布的圆和裂纹的弹性材料的削弱数值和比较结果从均匀化理论的预测。我们发现一个很好的协议的情况下,随机取向的裂纹长度相等的各向同性平面应变介质中的裂纹密度较低,较高的密度,材料是弱于预测由于前体的渗流。对于平行排列的裂纹,渗流不发生,我们分析预测的有效弹性常数的幂律衰减高裂纹密度,并确认这一结果的数值。

英文摘要:

We investigate the weakening of elastic materials through randomly distributed circles and cracks numerically and compare the results to predictions from homogenization theories. We find a good agreement for the case of randomly oriented cracks of equal length in an isotropic plane-strain medium for lower crack densities; for higher densities the material is weaker than predicted due to precursors of percolation. For a parallel alignment of cracks, where percolation does not occur, we analytically predict a power law decay of the effective elastic constants for high crack densities, and confirm this result numerically.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑