Computer-aided design (CAD)
refers to the use of computers in
converting the initial idea for a product into a detailed engineering design.
The evolution
of a design typically involves the creation of geometric models of the product,
which can be manipulated, analyzed, and refined.
In CAD, computer graphics replace the
sketches and engineering drawings traditionally used to visualize products and
communicate design information.
Engineers also use computer
programs to estimate the performance and cost of design prototypes and to
calculate the optimal values for design parameters. These programs supplement
and extend traditional hand calculations and physical tests. When combined with
CAD, these automated analysis and optimization capabilities are called
computer-aided engineering (CAE).
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