DC:21. COMPUTER AIDED ENGINEERING (CAE)

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One of the fundamental features of Engineering is to make trade-offs to get optimal designs

If we overdesign, then all designs become simple, but more expensive, and more difficult to manufacture

If we underdesign, then our design will not fulfill our requirements

Therefore we use knowledge and tools to achieve designs which are `just right'.

There are many physical factors which can affect the quality of a design,

- Yield stress failure

- Excessive deformation

- Insufficient heat transfer

- Kinematic interference

- Too much/little air drag

- Resonance at wrong frequency

- Electromagnetic interference effects

- Non uniform cooling effects (eg. warping in plastic parts)

- etc.