3D construct 1

[melixman2016]

Hello

can someone please tell you what to start with to construct a Kids Bike Traile Linkas 3D.
it should select material and geometry.
I think I should start sketching with forces (children's weight)! and type of load (whether it is tensile, compressive or torsional), then select the appropriate material for it.
Am I on the right way?

Thank you for the help

 

[Lomarandil]

Not to derail your fun, but this is likely a case where economic design is driven more by manufacturing and material availability than structural calculations.

After that, I'd anticipate your design will be driven by stability and deflections/stiffness -- both driven mostly by your geometry.

----
The name is a long story -- just call me Lo.

 

[melixman2016]

Thank you for your answer.
According to the project, it is not the economic aspect that comes first and foremost, but lightweight construction.
and the model must be made of at least 90% wood.

 

[robyengIT]

a friend of mine is just manufacturing what he likes, without any engineering problematic (he did only the primary school ending at 11 years) : watch attached photos

 

[melixman2016]

Yeah, it looks nice.
But where should one start?
free body diagram

Thanks

 

[robyengIT]

[ul]
[li]imagination[/li]
[li]ideas[/li]
[li]good reasons[/li]
[li]free time (a lot)[/li]
[li]small workshop in your garage[/li]
[li]consciousness you will spend money without any profit[/li]
[li]satisfaction you did something unique[/li]
[/ul]

 

[melixman2016]

thanks for your helpful tips.
I would first design a rough model and then do FEM analysis to check the stresses and deformations.