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Plastic ridge formation in a compressed thin amorphous film
arXiv - PHYS - Disordered Systems and Neural Networks Pub Date : 2022-09-19 , DOI: arxiv-2209.09055
Gianfranco Cordella, Francesco Puosi, Antonio Tripodo, Dino Leporini, Anaël Lemaître

We demonstrate that surface morphogenesis in compressed thin films may result from spatially correlated plastic activity. A soft glassy film strongly adhering to a smooth and rigid substrate and subjected to uniaxial compression, indeed, does not undergo any global elastic pattern-forming instability, but responds plastically via localized burst events that self-organize, leading to the emergence of a series of parallel ridges transverse to the compression axis. This phenomenon has been completely overlooked, but results from common features of the plastic response of glasses, hence should be highly generic for compressed glassy thin films.

中文翻译:

在压缩的非晶薄膜中形成塑性脊

我们证明压缩薄膜中的表面形态发生可能是由空间相关的塑性活动引起的。牢固地粘附在光滑和刚性基材上并经受单轴压缩的软玻璃膜实际上不会经历任何全局弹性图案形成不稳定性,而是通过自组织的局部爆裂事件产生塑性响应,从而导致一系列的出现横向于压缩轴的平行脊。这种现象已被完全忽视,但由于玻璃塑料响应的共同特征,因此对于压缩玻璃薄膜应该是高度通用的。
更新日期:2022-09-20
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