Takeshi Ooshida
Department of Applied Mathematics and Physics, Tottori University, Japan.
Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Jun;77(6 Pt 1):061501. doi: 10.1103/PhysRevE.77.061501. Epub 2008 Jun 3.
A possible clarification of memory effect observed in crack patterns of drying pastes [A. Nakahara and Y. Matsuo, J. Phys. Soc. Jpn. 74, 1362 (2005)] is presented in terms of a macroscopic elastoplastic model of isotropic pastes. We study flows driven by steady gravitational force instead of external oscillation. The model predicts creation of residual tension in favor of cracks perpendicular to the flow direction, thus causing the same type of memory effect as that reported by Nakahara and Matsuo for oscillated CaCO3 pastes.
基于各向同性糊剂的宏观弹塑性模型，对[A. 中原和松尾洋，《日本物理学会杂志》74, 1362 (2005)]中干燥糊剂裂纹模式中观察到的记忆效应给出了一种可能的解释。我们研究由稳定重力而非外部振荡驱动的流动。该模型预测会产生残余张力，有利于形成垂直于流动方向的裂纹，从而导致与中原和松尾报道的振荡碳酸钙糊剂相同类型的记忆效应。
