On sintering of tiny glass beads in oscillating diametric compressions

Chung Fang, Wei Wu, Yung Jung Lin, Yen Hung Chen, Thiep Doanh

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Sintering of tiny spherical glass beads induced by oscillating diametric compression at room temperature is considered. The amorphous glass beads are modeled as isotropic elasto-plastic solid with bilinear stress-strain constitutive relationship, which is implemented in a finite element code. The coupled thermal and mechanical response of the glass beads under cyclic compressions is investigated. Our numerical simulations show that the local temperatures and stresses near the contact points can significantly be raised during adiabatic compression cycles. The temperature rise is more pronounced for contact between two beads with different sizes or for contact with more neighboring beads. There exist temperature and stress gradients from the interiors toward the contact points. These findings provide a feasible explanation for the sintering found in recent triaxial compression experiments with tiny glass beads under room temperature and low pressure.

原文English
文章編號73
期刊Granular Matter
18
發行號4
DOIs
出版狀態Published - 2016 11月 1

All Science Journal Classification (ASJC) codes

  • 一般材料科學
  • 材料力學
  • 一般物理與天文學

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