准静态过程
准周期函数
粒状材料
材料科学
变形(气象学)
准静态载荷
粒度
正多边形
准晶
动力学(音乐)
机械
复合材料
物理
凝聚态物理
几何学
数学
热力学
作者
Fernando Alonso-Marroquin,Hans J. Herrmann
标识
DOI:10.1103/physrevlett.92.054301
摘要
We investigate the quasistatic mechanical response of soils under cyclic loading using a discrete model of randomly generated convex polygons. This response exhibits a sequence of regimes, each one characterized by a linear accumulation of plastic deformation with the number of cycles. At the grain level, a quasiperiodic ratchetlike behavior is observed at the contacts, which excludes the existence of an elastic regime. The study of this slow dynamics allows exploration of the role of friction in the permanent deformation of unbound granular materials subjected to cyclic loading.
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