Cracks are dangerous and frequently observed defects in steel structures. Therefore, the understanding of the mechanism of crack is very important to structure safety. Although the mechanism of static crack has been widely studied by researchers, the mechanism of dynamic crack has been left out and seldom been discussed. In this paper, a modeling method for acoustic emission (AE) source of dyna...

Transient response performance and steady-state operation are the two most important indicators of a motor drive system. In order to solve these problems, this study proposes new induction (IM) model, then designs simplified linearization controller method. First, tangential force that determines transient process is represented by electromagnetic torque, radial reactive torque. Then, dual-torq...

A three-dimensional (3D) Euler-Euler gas-liquid two-phase mathematical model was developed for simulating the local transient fluid flow in a gas-induced pulsating flow bubble column using computational fluid dynamic (CFD) method, with multiple size group (MUSIG) model implemented to predict the bubble size distribution. Model simulated results such as local transient axial liquid velocities an...

Contingency ranking in power system transient stability is a complicated and time consuming task. To prevail over this difficulty, various indices are used. These indices are based on the concept of coherency and three dot products of the system variables. It is well known that some indices work better than others for a particular power system. This paper introduces an innovative composite seve...

Transient Stability Assessment (TSA) is essentially important since recent blackout in northern India turns most of the research people towards dynamic security. Transient stability is inherently a Differential-Algebraic equation which is needed to be tackled by an effective method. So, Time Domain Approach is implied in solving TSA.The main objective of this paper is to determine accurate Crit...

Accurate AFR control with TWC is a significant method to reduce the exhaust emission of SI engines. To follow the up to date model-based methodology in automotive industries, a virtual engine simulation platform was carried out to simulate a SGMW B15 engine based on enDYNA and improved by adding the AFR path dynamic models. Experiments and simulation results were compared for the model validati...