This article describes ECML (ETRI CPS Modeling Language), a modeling langue for hybrid system simulation. ECML extends DEV&DESS (Discrete Event and Differential Equation System Specification), with conveniences in modeling and simulation. Modeling environment EcoPOD (ETRI CPS Open Developer) and visual simulator EcoSIM (ETRI CPS Simulator) support visual modeling and simulation. We introduce mo...

In this paper, numerical simulation of FRP composite cylinder tubes progressive crushing processes is conducted using LS-Dyna. Details on the numerical modeling strategy are given and discussed. It is found that triggers introduced in the numerical simulation can effectively model the bevel trigger at the end of the tubular specimens. It is also found that two-layer finite element model based o...

The present study is devoted to an approximate modeling for numerical simulation of flows past oscillating airfoils. In this study, it is shown that the harmonic oscillating objects can be studied by simple numerical codes that are not able to solve moving grids. Instead of using moving grid for the simulation of flowfield around an oscillating airfoil, this unsteady flow is solved on a fixed g...