What are the features of COSAR?
The
COSAR-Analysis Systems - Overview
The three main components of COSAR are: The graphical pre-processor COSMESH that allows the interactive generation of both geometry and FE mesh, incorporating substructure-/superelement technique. COSMESH provides ideal and flexible capabilities for model generation and changing. It supports ideally the modelling of thin-walled structures. Alternatively, FEMAP pre-processor can be integrated as well, including FEMCOS supplementary tool for substructure/superelement generation.
The analysis processor offers a lot of analysis types. The interactive post-processor COSGRAF gives the opportunity of evaluation of all types of results (graphical interpretation of each figure and listing).
COSAR is available for Windows and UNIX.
COSAR (Version 7.x) is a totally menu-driven finite element analysis package, together with a user-friendly graphical user-interface, user-support and online-help. The menu system is clearly organized and quickly becomes familiar, since it concentrates on the main stages encountered in finite element applications.
COSAR meets the NAFEMS quality requirements according to the NAFEMS Benchmarks.
If you want to, FEMCOS can customise the software for your specific needs.
new unique
user-interface for all operation systems
functionality
improvements in pre- and post-processing
improved capability
with new simulation analysis options: Piezomechanics (static and dynamic analysis)
improved interface
for NASTRAN data transfer
new comprehensive
online help (HTML)
In COSAR there are the following analysis systems
available:
Displacement and stress analysis |
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Eigenfrequencies and mode shapes, steady state and transient vibration, response spectrum technique, Model updating |
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Model correction based on experimental modal data |
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Steady state and transient heat transfer, linear and non-linear |
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Simulation of structural problems with non-linear material behaviour |
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Solution of contact problems with linear and non-linear material behaviour |
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Statics, Dynamics: Usage of piezo elements for electrical-mechanical coupling with linear material behaviour |
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Calculation of critical loads (Bifurcation) - Theory II.order |
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SolidDesigner-COSAR: Generation of shell-midplane-models based on 3D-data |
Here
you can find some selected interesting examples
analysed by COSAR.
Displacement and Stress Analysis, coupled field problems (mechanical, electrical, thermal)
Natural frequencies and mode shapes, steady-state and transient vibration, response spectra technique, model updating, coupled field problems (mechanical, electrical, thermal)
Model updating (model correction) based on experimental modal data
COSAR offers model-updating facilities based on measurement data obtained from experimental modal analysis (EMA). The measured modal data (natural frequencies and mode shapes) are the COSAR input data, and are used for location and model correction. The model-updating process allows the user a great deal of control over the various stages.
Steady state and transient heat transfer, linear and non-linear
Simulation of structural problems with non-linear material behaviour, calculation of contact problems with linear and non-linear material behaviour (elastic-plastic material, Visko-plastic behaviour: creep). Elastic-plastic material behaviour
Solution of contact problems with linear and non-linear material behaviour (see analysis type Non-linear)
Use of piezo elements for the electrical-mechanical coupling
COSAR allows analysis of both pure piezo-element models and also mixed models (mechanical AND piezo elements). Linear material behaviour is assumed. Several types of elements are available for modelling: 2-D plane, 3-D beam, and 3-D volume elements. Possible to couple 3-D beam elements with 3-D volume elements. The piezo-element catalogue is undergoing continuous development (particularly in conjunction with the ADAPTRONIK project).
Calculation of critical loads (bifurcation) for safety against buckling in 1-D, 2-D, and 3-D models (Theory II. order)
Generation of shell-midplane-models based on 3D-data
Generally lightweight structures and also products of steel construction are increasing thin-walled. On the one hand for the FE modeling of these parts shell elements are used. On the other hand the design is threedimensional.
With the new CAD-FEM-Tool of FEMCOS it is possible to combine both kind of work effectively. A SolidDesigner-integrated expert system analyses the 3D-geometry model and generates a shell-midplane-model. Together with other properties this model is the basis for the COSAR pre-processor COSMESH (import, FE net, analysis with COSAR).
