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MIRA's Mechanical Engineering group is active in CAD and CAE, testing vehicles for crash worthiness and strength with emphasis on computational fluid dynamics (CFD).
Modeling airflow in vehicles helps with the study of aerodynamic performance and heating performance while Electromagnetic Compatibility (EMC) predicts how different electromagnetic systems interact with each other and the world around them.
EMC simulation
Some mechanical simulation techniques, like FEA and CFD, are mature engineering disciplines. While electromagnetic techniques have been developed, there remain computational performance and meshing issues.
As the price performance ratio of big computers falls, computational performance is becoming less of a problem. To help resolve the issue of meshing, MIRA turned to CADfix.
"We've worked with CADfix for several years," explains David Ward, manager of MIRA's Advanced Engineering Electrical Group. "In 1994 we proved that analysis tools were potentially valuable to the automotive industry but we didn't have a way to extract the relevant data from CAD models."
CADfix
MIRA uses geometry from various CAD systems, including CATIA and Unigraphics. When the geometry arrives, the relevant data is extracted from the CAD systems. CADfix is used to manipulate and repair the geometry.
"CADfix enables us to accept data from a wide range of sources," explains Ward. "We find the flexibility of CADfix very useful."