Dynamic glass transition dramatically accelerates crack propagation in rubberlike solids,Physical Review Materials

当前位置： X-MOL 学术 › Phys. Rev. Materials › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Dynamic glass transition dramatically accelerates crack propagation in rubberlike solids
Physical Review Materials ( IF 3.1 ) Pub Date : 2021-07-29 , DOI: 10.1103/physrevmaterials.5.073608
Atsushi Kubo ₁ , Naoyuki Sakumichi ₂ , Yoshihiro Morishita ₃ , Ko Okumura ₄ , Katsuhiko Tsunoda ₅ , Kenji Urayama ₆ , Yoshitaka Umeno ₁

Affiliation

A crack propagating in a strained rubberlike solid exhibits an abrupt change of the propagation velocity by typically more than

10^{2}

times at a specific threshold strain energy, which is a phenomenon called the “velocity jump.” Despite its scientific and industrial significance, the mechanism of the velocity jump had been unsolved for more than 30 years. This paper gives a clear answer to the mechanism, showing dynamic glass transition at the crack tip is the true origin of the crack velocity jump. We present concerted investigations involving theoretical analysis, numerical calculation, and experiment to establish an integrated understanding of the mechanism. Our findings indicate that the velocity jump can be found in general viscoelastic materials.

中文翻译：

动态玻璃化转变显着加速了橡胶状固体中的裂纹扩展

在应变橡胶状固体中传播的裂纹表现出传播速度的突然变化，通常超过

10^{2}

特定阈值应变能的时间，这是一种称为“速度跳跃”的现象。尽管具有科学和工业意义，但速度跳跃的机制已经有 30 多年没有得到解决。本文对该机制给出了明确的答案，表明裂纹尖端的动态玻璃化转变是裂纹速度跳跃的真正起源。我们提出了涉及理论分析、数值计算和实验的协同研究，以建立对该机制的综合理解。我们的研究结果表明，在一般粘弹性材料中可以发现速度跳跃。

更新日期：2021-07-29

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文