2017/10/14 by Viacheslav Slesarenko, Slesarenko, Viacheslav, Stephan Rudykh +1 · 1 citation
Chemical Engineering · Engineering · #Adhesion, Friction, and Surface Interactions #Advanced Materials and Mechanics #FOS: Physical sciences #Rheology and Fluid Dynamics Studies #Soft Condensed Matter (cond-mat.soft)
paper · pdf · doi:10.48550/arxiv.1710.05187
openalex publication_date 2017/10/14 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
We study mechanical behavior of soft rubber-like digital materials used in\nPolyjet multi-material 3D-printing to create deformable composite materials and\nflexible structures. These soft digital materials are frequently treated as\nlinear elastic materials in the literature. However, our experiments clearly\nshow that these materials exhibit significant non-linearities under large\nstrain regime. Moreover, the materials demonstrate pronounced rate-dependent\nbehavior. In particular, their instantaneous moduli as well as ultimate strain\nand stress significantly depend on the strain rate. To take into account both\nhyper- and viscoelasticity phenomena, we employ the Quasi-Linear Viscoelastic\n(QLV) model with instantaneous Yeoh strain-energy density function. We show\nthat the QLV-Yeoh model accurately describes the mechanical behavior of the\nmajority of the soft digital materials under uniaxial tension.\n