Liu Chen, Dutta Suman, Chaudhuri Pinaki, Martens Kirsten
Laboratoire de Physique de l'Ecole Normale Suprieure, 75005 Paris, France.
The Institute of Mathematical Sciences, Taramani, Chennai 600113, India.
Phys Rev Lett. 2021 Apr 2;126(13):138005. doi: 10.1103/PhysRevLett.126.138005.
We develop a framework to study the mechanical response of athermal amorphous solids via a coupling of mesoscale and microscopic models. Using measurements of coarse-grained quantities from simulations of dense disordered particulate systems, we present a coherent elastoplastic model approach for deformation and flow of yield stress materials. For a given set of parameters, this model allows us to match consistently transient and steady state features of driven disordered systems with diverse preparation histories under both applied shear-rate and creep protocols.
我们开发了一个框架，通过中尺度模型和微观模型的耦合来研究无热非晶态固体的力学响应。利用对密集无序颗粒系统模拟中粗粒度量的测量，我们提出了一种用于屈服应力材料变形和流动的连贯弹塑性模型方法。对于给定的一组参数，该模型使我们能够在施加剪切速率和蠕变协议下，将具有不同制备历史的驱动无序系统的瞬态和稳态特征进行一致匹配。
