Mechanics of tympanic membrane (TM) is crucial for investigating the acoustic transmission through the ear. In this study, we studied the wrinkling behavior of tympanic membrane when it is exposed to mismatched air pressure between the ambient and the middle ear. The Rayleigh-Ritz method is adopted to analyze the critical wrinkling pressure and the fundamental eigenmode. An approximate analytic...

Wrinkling and fracture are the important defects in deep drawing operation, which can be prevented using blank holding force (BHF) which has to be optimized as lower BHF promotes wrinkles formation and higher BHF promotes fracturing. Hence the limits of wrinkling and fracture have to be established. These limits depend on various tooling and process parameters. In this work the effect of toolin...

In this paper, the anisotropic thermal conductivity characteristics of graphene wrinkles are observed for the first time using a non-equilibrium molecular dynamics method. Our results reveal that the wrinkling level has little effect on the thermal conductivity along the wrinkling direction. However, the wrinkling level plays an important role in the reduction of thermal conductivity along the ...

Integrating deformable interconnects with inorganic functional materials establishes a path to high-performance stretchable electronics. A number of applications demand that these systems sustain large deformations under repetitive loading. In this manuscript, the influence of the elastomeric substrate on the stretchability of serpentine interconnects is investigated theoretically and experimen...

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...

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,...

We present a method to control wave propagation in highly deformable layered media by utilizing elastic insta-bility-induced wrinkling of interfacial layers. The onset of a wrinkling instability in initially straight interfacial layersoccurs when a critical compressive strain or stress is achieved [1]. Further compression beyond the critical strainleads to an increase in the wri...

Paper materials have a long history of use in packaging products, although traditional paper-based packaging is limited in its shape and design. In order to enable more advanced paper-based packaging, various 3-D forming processes for paper materials have been studied. Since 3-D forming processes typically include the application of moisture and/or temperature, the effects of moisture and tempe...