Chahngmin Cho

TL;DR: In this paper, a solid shell element model with six degrees of freedom per node is applied to buckling and postbuckling analysis of geometrically nonlinear shell structures, which allows changes in the thickness direction and does not require rotational angles or parameters for the description of the kinematics of deformation.

TL;DR: In this article, the formulation of a nine-node assumed strain shell element is modified and extended for use in analysis of actuator-embedded structures The shell element can alleviate locking and has six degrees of freedom (DOF) per node as a result of discarding the assumption of no thickness change.

TL;DR: In this paper, a buckling analysis of composite cylinders under torsion is performed by using the geometrically nonlinear e nite element analysis and a nine-node assumed strain shell-element model with six degrees of freedom per node is used for the analysis.

TL;DR: In this paper, a geometrically nonlinear nine-node assumed strain shell element with six DOF per node was used to estimate the torsional buckling loads of composite cylinders with angle plies.

TL;DR: In this paper, an ionic polymer-metal composite (IPMC) actuators arrayed in horizontal as well as vertical directions were investigated for more effective actuation performance, and a very thin polymer packaging structure named "glove" was designed and fabricated, and the IPMC package, composed of the glove and the arrayed IPMCs, was applied to the multifunctional control surface of a micro air vehicle (MAV).