Quote:
Originally Posted by PeterHA
Whilst the piers with ribs are one good approach, the explanations and expressions used in the videos are to some extend just wrong and do not reflect the fundamentals of mechanical engineering principles.
Some is there to mystify...
The analogy of a vertical spring (pier) with a weight on top and induced vibration is spot on.
Some ways to tackle this are:
- dampening the vibration with suitable design, a path often used in the automotive industry as it saves weight.
- modifying the design to shift the resonance frequency
I also like bigger is better, often true in respect to shaft sizes and piers.
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When I built my pier - I received the same advice from a classically trained engineer: 'the terminology that this UK guy uses in this video are off'. I went with my engineers specs instead, used large SHS and have never looked back.