We examine the buckling shape and critical compression of confined inhomogeneous composite sheets lying on a liquid foundation. The modes are controlled by bending stiffness sheet,...

Morphological instabilities play a key role in the evolution of form and function growing biomaterials. Spatially varying differential growth, particular, leads to residual stresses that for soft materials or slender geometries are favourably relieved by out-of-plane buckling wrinkling. While onset instability biomaterials has been studied extensively, post-critical regime remains poorly unders...

This article tackles the problem of identification elastic continuum model by atomistic simulations for graphene polymer nanocomposite. The Atomistic Local IdentificAtion Stiffness method, so-called ALIAS is developed to estimate local stiffness tensor at all points laminate Results suggest that can be modeled scale a general imperfect interface with zero thickness. Moreover, procedure reveals ...

BACKGROUND It is unclear whether traditional application of Kinesio taping, which produces wrinkles in the skin, is effective for improving blood circulation. This study investigated local skin temperature changes after the application of an elastic therapeutic tape using convolution and non-convolution taping methods (CTM/NCTM). MATERIAL AND METHODS Twenty-eight pain-free men underwent CTM and...

We recently reported that overexpression of the elastase NEP (neutral endopeptidase) by fibroblasts plays a pivotal role in the mechanism of UVB-induced skin wrinkling by degrading dermal elastic fibres. Since UVB does not penetrate to the dermis, we hypothesized that factors secreted by UVB-exposed keratinocytes in the epidermis trigger fibroblasts in the dermis to increase their expression of...

A method to simulate orthotropic behaviour in thin shell finite elements is proposed. The approach is based on the transformation of shape function derivatives, resulting in a new orthogonal basis aligned to a specified preferred direction for all elements. This transformation is carried out solely in the undeformed state leaving minimal additional impact on the computational effort expended to...

When a stiff film on a soft substrate is compressed, the surface of the film forms wrinkles, with tunable wavelengths and amplitudes that enable a variety of applications. As the compressive strain increases, the film undergoes post-wrinkling bifurcations, leading to period doubling and eventually to formation of localized folds or ridges. Here we study the post-wrinkling bifurcations in films ...