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无序软固体中结构载荷转移产生的屈服现象

Emergent Yielding from Structural Load Transfer in Disordered Soft Solids

Lalit Kumar

arXiv 2607.13176首次发表:更新:

AI 中文总结

研究无序软固体屈服现象,提出统一非奇异本构框架,该框架能自然产生有限屈服应力和平滑固液转变,无需特定准则等,还可捕捉多种流变现象。

AI 中文摘要

无序软固体中的屈服源于通过变形诱导的结构演化,承载能力从可恢复的弹性网络向摩擦相互作用的逐步重新分配。我们提出了一个统一的、非奇异的本构框架,表明这种机制自然产生有限的屈服应力和从固体到流体的平滑转变,无需规定屈服准则、本构切换或发散粘度。该框架捕捉了各种瞬态和稳态流变现象。

英文摘要

Yielding in disordered soft solids originates from the progressive redistribution of load-bearing capacity from recoverable elastic networks to frictional interactions through deformation-induced structural evolution. We present a unified, non-singular constitutive framework demonstrating that this mechanism naturally generates a finite yield stress and a smooth solid-to-fluid transition without prescribed yield criteria, constitutive switching, or divergent viscosities. The framework captures diverse transient and steady rheological phenomena, including Herschel-Bulkley behavior, stress overshoots, hysteresis, viscosity bifurcation, plug-flow formation, and thixotropic steady-state shear banding.

Comments6 pages, 3 figures

论文原文

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