Simulation express

Simulation Generality
1

Hello

A question has been bothering me for a long time that I have skipped...

In express simulation, we can therefore test the resistance of a recessed part with a force applied to X place... After a few tests I am worried about some results:

let's just take a beam (to exaggerate the test) 30 m long embedded on one side only, on the opposite, on a surface of 10 mm, let's assume that a force of 1 N applies ... nothing, no distortion ... I deduce that Solidwroks doesn't take the weight of the part itself... What for? Is there a way to remedy this, apart from applying its estimated weight over the entire surface? or should it be put at its center of gravity?

2

I tell myself that applying its own weight to it should be the right solution given that Express does not offer gravity or its meaning ... But are the results still reliable? in the case of a simple beam, it is easy by calculation to check but in a more complex part, it leaves me more doubts ...

3

Hello

For the calculation of a beam, I go  here.

http://jean.lamaison.free.fr/flexion.html

may the force be with you.

 

4

Indeed, in the express module, gravity is not taken into account. You need the premium version with the simulation module for that.

But nothing prevents you from modeling your weight by a force applied to the center of gravity of the beam.

If it's a simple beam, a little calculation on a piece of paper will confirm the results

5

yes it was an example, when it's a simple beam it's fine but a more complex part is something else...

I took the example of the beam to make it simple, so, is it valid on any other part? But if I trust your comments, you have to apply your own weight to the center of gravity? Therefore, how can we do this? because I don't think SW (I'm not in front)  accepts that we apply a force on a point? Must we then create an infinitely small surface? just to place the force perpendicular to the center of gravity?

6

Express, like any tool, has its limits, and you have to know them.

Just the fact that you can only make built-ins severely limits the use. In general, I get by with the "separation line" curves.

for gravity, rather than applying it to the center of gravity, I would prefer to put it in distributed load (the weight applied to the CDG, it's valid in static or dynamic), it seems more realistic to me (easy to test...).