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APPLIED MECHANICS
Lecture 13
Slovak University of TechnologyFaculty of Material Science and Technology in Trnava
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
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
Build the model.
SOLUTION
Apply loads and obtain the solution.
POSTPROCESSOR
Review the results.
Analysis Phases - PREPROCESSING
Analysis Phases - PREPROCESSINGElement Type
MESHMulti-PointConstraintPIPEPLANEPRETS (Pretension)SHELLSOLIDSOURCeSURFaceTARGEtTRANSducerUSERVISCOelastic(or viscoplastic)
BEAMCIRCUitCOMBINationCONTACtFLUIDHF (HighFrequency)HYPERelasticINFINiteINTERfaceLINKMASSMATRIX
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