1. APPLIED MECHANICS Lecture 13 Slovak University of Technology
Faculty of Material Science and Technology in Trnava
APPLIED MECHANICS
Lecture 13

2. Available Commercial FEM Software Packages
ALGOR ANSYS
COSMOS/M
STARDYNE/FEMAP
MSC/NASTRAN
SAP90/2000
ADINA
NISA
GT Strudl
ABAQUS
Plaxis
...
Matlab based:
CalFem
FemLab
CAE products:
Pro/ENGINEER
Pro/FEA
Pro/MECHANICA
Cosmos/Works
Inventor/ANSYS
IDEAS

3. What is Finite Element Analysis?

4. 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

5. 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).

6. 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

7. Introduction to ANSYS Facilities in ANSYS: Solvers Preprocessing
Iterative
Sparse
Frontal
Explicit
Preprocessing
Postprocessing
General Features

8. Interfacing with ANSYS
Matlab, Excel
CAD –Pro/ENGINEER
IGES
Log-file editing
Application Programming Interface (API)
...

9. Analysis Phases PREPROCESSOR SOLUTION POSTPROCESSOR Build the model.
Apply loads and obtain the solution.
POSTPROCESSOR
Review the results.

10. Analysis Phases - PREPROCESSING

11. 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)

12. Analysis Phases - PREPROCESSING

13. Analysis Phases - PREPROCESSING

14. Analysis Phases - SOLUTION

15. 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

16. Analysis Phases - POSTROCESSOR

17. Analysis Phases - POSTPROCESSOR
General Postproc> Plot Results > Contour Plot > Nodal Sol

18. Analysis Phases - POSTPROCESSOR
Element Table

19. Analysis Phases - POSTPROCESSOR
Plot Path