Time Step Finite Element analysis for synchronous generator's asynchronous operation during loss of field

2012 ◽  
Author(s):  
Wang Hongyu ◽  
Xu Guorui ◽  
Liu Xiaofang ◽  
Zhao Haisen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Time Step ◽  
Element Analysis ◽  
Asynchronous Operation

Time step constraints in finite element analysis of the poisson type equation

1989 ◽  
Vol 31 (2) ◽  
pp. 269-273 ◽  
Author(s):  
V. Murti ◽  
S. Valliappan ◽  
N. Khalili-Naghadeh
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Type Equation ◽  
Time Step ◽  
Element Analysis ◽  
Poisson Type

scholarly journals Time-step constraints in transient coupled finite element analysis

2015 ◽  
Vol 106 (12) ◽  
pp. 953-971 ◽  
Author(s):  
W. Cui ◽  
K. A. Gawecka ◽  
D. M. G. Taborda ◽  
D. M. Potts ◽  
L. Zdravković
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Time Step ◽  
Element Analysis

Flow-Structural Coupled Finite Element Analysis of the Monopole Steel Tower under Wind Load

2011 ◽  
Vol 383-390 ◽  
pp. 3639-3644
Author(s):  
Bo Li ◽  
Chun Xia ◽  
Li Xing ◽  
Zheng Yi Sheng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Dynamic Response ◽  
Stokes Equations ◽  
Wind Load ◽  
Deformation Pattern ◽  
Wind Flow ◽  
Time Step ◽  
Element Analysis ◽  
Tower Structure

Noting that in traditional study, the dynamic response of the tower structure under wind load is usually analyzed by explicitly applying equivalent force on nodes of the tower’s finite element model which may oversimplify the flow-structure interaction interface, this paper presents a fully coupled finite element study of the dynamic response of monopole steel tower. Coupled finite element analysis is used to model the interaction between the steel tower and the wind flow. The steel tower is composed of tubes and is modeled using solid element, while the wind flow is governed by Navier-Stokes equations for incompressive flow. Parameters such as the viscosity of the flow and boundary conditions (wind velocity at different height) are measured from experiments. At each time step of the calculation, winslow moving mesh is used to rezone the computational grid to ensure the accuracy. Simulation is given for studying the deformation pattern of the tower structure.

A Numerical Integration Method of Dynamic Finite Element Analysis

2011 ◽  
Vol 199-200 ◽  
pp. 1257-1261
Author(s):  
Xing Pei Liang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Numerical Integration ◽  
Integration Method ◽  
Time Interval ◽  
Numerical Integration Method ◽  
Time Step ◽  
Element Analysis ◽  
Dynamic Finite Element ◽  
Dynamic Finite Element Analysis

A new numerical integration method for dynamic finite element analysis is proposed in the paper. In the proposed algorithm, the acceleration change in a particular time step is first assumed to be curved variation, and then the displacement vector, velocity vector and acceleration vector at the current instance can be expressed in terms of the results at last time instance. Because of the curvilinear property of the acceleration change in a particular time interval, the complicated dynamical responding such as high-oscillatory modes can be captured with the present method. The efficiency and accuracy of the proposed algorithm are validated by two numerical examples and numerical results show that the present formulation has better accuracy than the Wilson’s method and the Newmark’s method used in the conventional finite element method.

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