## General Mechanical

Topics relate to Mechanical Enterprise, Motion, Additive Print and more

#### Pressure on all surfaces of the tubes

• javat33489
Subscriber

Hi all. Please tell me. What if I have a model, it is a set of tubes, which, for example, are a tree of tubes.

How is it possible to set up the model and surfaces in SPACECLAM so that I can quickly assign wind and snow pressure along two axes? Cutting each tube on the surface is very long.

Or maybe you can somehow set the pressure in the solver so that it acts along the entire axis in space and falls on the tubes in the right places?

• peteroznewman
Subscriber

Snow settles on the branches of a tree. You can add a Distributed Mass to the surfaces and turn on Gravity to simulate the load that snow applies to the branches, but there is no accumulation on vertical branches.  You can assign a directional pressure to all the surfaces to represent the wind pressure.

• javat33489
Subscriber

>>You can add a Distributed Mass to the surfaces and turn on Gravity to simulate the load that snow applies to the branches, but there is no accumulation on vertical branches.

Then I can set only horizontal and inclined surfaces (branches) in the distributed masses, right? Snow load is usually given as kg/m2, I would have to calculate the total surface area of the tree branches and divide by 2 (only the top half holds the snow), right? Then apply the load according to the resulting area, right?

Maybe I can apply directional pressure for the wind load as well? But the problem is that the pressure will act on the entire surface of the branch, even where there is no snow (for example, from the bottom of the branch).

>>You can assign a directional pressure to all the surfaces to represent the wind pressure.

You have to select the surfaces of the branches and set the directional pressure like so:

???

• peteroznewman
Subscriber
1. Right.
2. Use a non-zero pressure value for the horizontal component to represent the wind load.

• javat33489
Subscriber

Thank you