28-11-2012, 03:48 PM
FEA and Abaqus
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Introduction of FEA and Abaqus
Preface:Abaqus like a large building with many rooms. It is not necessary to be familiar
with all the rooms for Abaqus users. The things you should know are your target room
and the way to access it. It is hoped that the two days Abaqus training can provide you
the entrance and the map of the large building.
Seven Questions
Q1:What is FEA?
FEA is the abbreviation of Finite Element Analysis. Generally, engineering analysis can
be classified into two types: Classic method and Numerical method. FEA is a numerical
method for solving partial differential equation as well as integral equations generated
from complex structure.
General Finite element analysis procedure
General Finite Element Analysis Procedure includes the following three steps which also
construct the main framework of available FEA software.
1. Preprocessing: in this step, the user constructed model is divided (meshed) into a
number of discrete subregions or "elements", connected at discrete nodes. Certain
boundary conditions are applied to some of the nodes in displacement or load. In one
word, after preprocessing of FEA, the finite element model should be ready for being
submitted to the solution.
2. Solution/Analysis: in this step, the finite element model is submitted to the solver as
input in finite element code. A series of linear or nonlinear equations will be solved to
generate numerical output of displacement, stress, et al., on nodes.
3. Postprocessing: in this step, the postprocessing provides a visualization environment
for users to display the solutions in colored contours or other approaches, which assist the
users to get a better understand of the results.
Interface of Abaqus/CAE
Abaqus/CAE is a complete ABAQUS environment that provides a simple, consistent
interface for creating, submitting, monitoring, and evaluating results from
Abaqus/Standard and Abaqus/Explicit simulations. ABAQUS/CAE is divided into
modules, where each module defines a logical aspect of the modeling process; for
example, defining the geometry, defining material properties, and generating a mesh. As
you move from module to module, you build the model from which Abaqus/CAE
generates an input file that you submit to the ABAQUS/Standard or ABAQUS/Explicit
analysis product. The analysis product performs the analysis, sends information to
Abaqus/CAE to allow you to monitor the progress of the job, and generates an output
database. Finally, you use the Visualization module of ABAQUS/CAE to read the output
database and view the results of your analysis