The effective dynamic properties of specific periodic structures involving rubber-like materials can be adjusted by pre-strain, thus facilitating the design custom acoustic filters. While nonlinear viscoelastic behaviour is one main features soft solids, it has been rarely incorporated in study such phononic media. Here, we response solids within a 'small-on-large' acoustoelasticity framework, ...

BACKGROUND It is well documented that epidural adhesion is associated with spinal pain. However, the underlying mechanism of spinal pain generation by epidural adhesion has not yet been elucidated. OBJECTIVES To elucidate the underlying mechanism of spinal pain generation by epidural adhesion using a two-dimensional (2D) non-linear finite element (FE) analysis. STUDY DESIGN A finite element...

Lead rubber isolation bearings are well-recognized as a common and effective means to mitigate the seismic responses of bridges. However, used in offshore bridges extremely vulnerable action alternation aging seawater erosion caused by weather conditions, wind, waves, other factors. Meanwhile, deterioration law application lead subject effect cycles not clear. Thus, testing on both (LRB) materi...

Abstract A comprehensive model, i.e., a model that: (i) suitably captures the mechanical behaviour of various types rubber-like materials; (ii) describes constitutive subject specimen under different deformation modes via single set parameter values, and (iii) is parent to many existing models distinct types, presented in this paper for application finite incompressible isotropic materials. The...

This paper deals with the equilibrium problem of slender beams inflexed under variable curvature in framework fully nonlinear elasticity. For specific case uniform flexion, authors have recently proposed a mathematical model. In that analysis, complete three-dimensional kinematics beam is taken into account and both deformations displacements are considered large. present paper, aforementioned ...

A coarse-grained molecular dynamics simulation was used to investigate the stress-strain behavior of nanorod-filled polymer composites. The effects of the interfacial interaction, aspect ratio of fillers, filler functionalization, chemical couplings between the polymer and the filler and the filler loading on the mechanical reinforcement were explored. The results indicate that there exists an ...

Impact injuries are commonplace in sport and often lead to performance detriment and debilitation. Personal Protective Equipment (PPE) is prescribed as a mandatory requirement in most sports where these impacts are likely to occur, though the methods of governance and evaluation criteria often do not accurately represent sports specific injury scenarios. One of the key shortcomings of such safe...

Colloidal-probe spherical indentation load-relaxation experiments with a probe radius of 3 μm are conducted on poly(ethylene glycol) (PEG) hydrogel materials to quantify their steady-state mechanical properties and time-dependent transport properties via a single experiment. PEG-based hydrogels are shown to be heterogeneous in both morphology and mechanical stiffness at this scale; a linear-har...

When an elastomeric material is subject to sufficiently high temperature, macromolecular network junctions can undergo time-dependent scission and re-crosslinking (healing). The material system then consists of molecular networks with different reference states. A constitutive framework, based on the experimental work of Tobolsky, is used to determine the evolution of deformation of a solid rub...