mullins effect

Competition between Mullins and curvature effects in the wrinkling of stretched soft shells

Submitted by Fan Xu on Sat, 02/12/2022 - 16:41

A highly stretched hyperelastic shell exhibits a coupling behavior of local wrinkling and global bending within the stability boundary, and curvature resists and can even suppress surface wrinkles beyond a critical threshold. Here, we report a novel phenomenon that smooth surface maintains upon stretching a soft shell, while wrinkles emerge upon unloading, which implies a nonlinear interplay between curvature and Mullins (stress softening and residual strain) effects in the entire loading-unloading cycle.

ABAQUS files of coupled Mullins effect and cohesive zone model for fracture and adhesion of soft tough materials

Submitted by Teng zhang on Fri, 02/23/2018 - 04:40

Mesoscale Constitutive Modeling of Non-Crystallizing Filled Elastomer

Submitted by Ajay B Harish on Sat, 01/09/2016 - 20:47

research

elastomeric materials

mullins effect

International Journal

We have just published a new paper, 1st in the series, that presents a computational model to understand the microstructural changes in the filled elastomers as a consequence of mechanical forces. A heterogeneous (or multiphase) constitutive model at the mesoscale explicitly considering filler particle aggregates, elastomeric matrix and their mechanical interaction through an approximate interface layer is presented. An innovative lego-set method is discussed for generation of random microstructures that can be used for simple stochastic analysis.

A Theory for Large Deformation and Damage of Interpenetrating Polymer Networks

Submitted by Xuanhe Zhao on Thu, 10/20/2011 - 03:21

Interpenetrating Polymer Networks

double-network hydrogel

necking instability

Xuanhe Zhao

Soft Active Materials Laboratory, Duke University, Durham, NC 27708

Journal of the Mechanics and Physics of Solids, In press

Abstract

Cyclic volume changes in rubber

Submitted by LECAM on Sat, 02/28/2009 - 21:54

styrene butadiene rubber

mullins effect

crystallizable natural rubber

This is a study dealing with the volume variation in filled crystallizable natural (F-NR) and uncrystallizable styrene butadiene (F-SBR) rubbers subjected to cyclic loadings. During their deformation, such materials exhibit volume variation induced by the cavitation phenomenon and the decohesion between particles and the rubber matrix.

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