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Efficient snap-through of spherical caps by applying a localized curvature stimulus
Lucia Stein-Montalvo, Jeong-Ho Lee, Yi Yang +3
In bistable actuators and other engineered devices, a homogeneous stimulus (e.g. mechanical, chemical, thermal, or magnetic) is often applied to an entire shell to initiate a snap-…
The nonlinear buckling behavior of a complete spherical shell under uniform external pressure and homogenous natural curvature
Douglas P. Holmes, Jeong-Ho Lee, Harold S. Park +1
In this work, we consider the stability of a spherical shell under combined loading from a uniform external pressure and a homogenous natural curvature. Non-mechanical stimuli, suc…
Kirigami Actuators
Marcelo A. Dias, Michael P. McCarron, Daniel Rayneau-Kirkhope +4
Thin elastic sheets bend easily and, if they are patterned with cuts, can deform in sophisticated ways. Here we show that carefully tuning the location and arrangement of cuts with…
Surface Tension Effects on Surface Instabilities of Dielectric Elastomers
Saman Seifi, Qiming Wang, Harold S. Park
Dielectric elastomers have recently been proposed for various biologically-relevant applications, in which they may operate in fluidic environments where surface tension effects ma…
Computational Modeling of Electro-Elasto-Capillary Phenomena in Dielectric Elastomers
Saman Seifi, Harold S. Park
We present a new finite deformation, dynamic finite element model that incorporates surface tension to capture elastocapillary effects on the electromechanical deformation of diele…
Strain-rate and temperature-driven transition in the shear transformation zone for two-dimensional amorphous solids
Penghui Cao, Harold S. Park, Xi Lin
We couple the recently developed self-learning metabasin escape algorithm, which enables efficient exploration of the potential energy surface (PES), with shear deformation to eluc…