Transcript Materialy/01/Applied Mechanics-Lectures/Applied Mechanics

Slovak University of Technology
Faculty of Material Science and Technology in Trnava
APPLIED MECHANICS
Lecture 13
Available Commercial FEM Software Packages

ALGOR ANSYS

COSMOS/M

STARDYNE/FEMAP

MSC/NASTRAN

SAP90/2000

ADINA


Matlab based:

CalFem

FemLab
CAE products:

Pro/ENGINEER

Pro/FEA

Pro/MECHANICA

NISA

GT Strudl

Cosmos/Works

ABAQUS

Inventor/ANSYS

Plaxis

IDEAS

...
What is Finite Element Analysis?
What is Finite Element Analysis?
 Divide a continuum with
infinitely degrees of
freedom in to finite
elements with a given
number of DOF
 An element is geometrical
defined by a number of
nodes in which the
elements are connected.
The directions a node can
move in is termed degrees
of freedom
Introduction to ANSYS

ANSYS - FEA software enables engineers to perform
the following tasks:

Build computer models or transfer CAD models of structures,
products, components, or systems.

Apply operating loads or other design performance conditions.

Study physical responses, such as stress levels, temperature
distributions, or electromagnetic fields.

Optimize a design early in the development process to reduce
production costs.

Do prototype testing in environments where it otherwise would
be undesirable or impossible (for example, biomedical
applications).
Introduction to ANSYS

Facilities in ANSYS:

Structural Linear

Structural Nonlinear

Structural Contact/Common Boundaries

Structural Dynamic

Structural Buckling

Thermal Analysis

CFD Analysis

Electromagnetic -Low Frequency

Electromagnetics-High Frequency

Field and Coupled-Field Analysis
Introduction to ANSYS

Facilities in ANSYS:

Solvers

Iterative

Sparse

Frontal

Explicit

Preprocessing

Postprocessing

General Features
Interfacing with ANSYS






Matlab, Excel
CAD –Pro/ENGINEER
IGES
Log-file editing
Application Programming Interface (API)
...
Analysis Phases

PREPROCESSOR


SOLUTION


Build the model.
Apply loads and obtain the solution.
POSTPROCESSOR

Review the results.
Analysis Phases - PREPROCESSING
Analysis Phases - PREPROCESSING
Element Type
BEAM
CIRCUit
COMBINation
CONTACt
FLUID
HF (HighFrequency)
HYPERelastic
INFINite
INTERface
LINK
MASS
MATRIX
MESH
Multi-PointConstraint
PIPE
PLANE
PRETS (Pretension)
SHELL
SOLID
SOURCe
SURFace
TARGEt
TRANSducer
USER
VISCOelastic(or viscoplastic)
Analysis Phases - PREPROCESSING
Analysis Phases - PREPROCESSING
Analysis Phases - SOLUTION
Analysis Phases - SOLUTION

Types of loads






Structural - displacements, forces, pressures, temperatures (for
thermal strain), gravity
Thermal - temperatures, heat flow rates, convections, internal heat
generation, infinite surface
Magnetic - magnetic potentials, magnetic flux, magnetic current
segments, source current density, infinite surface
Electric - electric potentials (voltage), electric current, electric charges,
charge densities, infinite surface
Fluid - velocities, pressures
Loads - six categories:






DOF constraints
forces (concentrated loads)
surface loads
body loads
inertia loads
coupled-field loads
Analysis Phases - POSTROCESSOR
Analysis Phases - POSTPROCESSOR
General Postproc> Plot Results > Contour Plot > Nodal Sol
Analysis Phases - POSTPROCESSOR
Element Table
Analysis Phases - POSTPROCESSOR
Plot Path