Problem assigning force load Inventor 2012

[Anthony]

Please can anyone help me with this as it is really frustrating me ! I am tring to run a simulation on a bracket load in Inventor 2012, I run through all the steps fine but when am I asked to apply force I try to click the CENTRE of the hole in the bracket but Inventor refuses to let me, I can only select the edges ! Can anyone help please (see attached pic)

[MariaManuela]

To Force Inputs you can select faces, edges, and vertices.

Maybe you need to apply Bearing Load in hole and not a Force. Maybe.

[Anthony]

Thanks for your advise, I just tried BE (bearing load) but again Inventor would not let me select the hole centre ... ? Very frustrating 

[MariaManuela]

What you want to simulate?

Bolted connection?

[Anthony]

Yes as the attached image shows a bracket bolted to an I-beam, I am trying to simulate the force on the bracket 

[JDMather · Accepted solution]

The center of the hole is air.

The force will be applied to the face shown in red in your image.

(don't worry about the glyph - the force is evenly distributed on that face.

If you will have a mating part that only contacts part of the face you might use the Split command to split the face.

[MariaManuela]

If i remember...when we select a circular face to apply force....Inventor apply the force in the center of the hole.

[Anthony]

Thank you, this clarifies what I needed to know, it can be a bit misleading where the force glyph is as it gives the impression (to me at least) that this would be the exact point of the force.

[JDMather]

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@Anonymous wrote:

Thank you, this clarifies what I needed to know, it can be a bit misleading where the force glyph is as it gives the impression (to me at least) that this would be the exact point of the force.

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Yes, I agree.  All the other programs I use show a pattern of arrows to represent the force placement.

[freemantong]

Excuse me, can you tell me how to show distribution of force in Inventor simulation.

[henderh]

Hi Freemantong,

  A Force load is evenly distributed to a face (in only one direction)

  A Pressure load is evenly applied perpendicular to every point on a face

  A Bearing load is applied with a parabolic load distribution (in only one direction) to a cylindrical face [Edit: without traction, only "compression"]

Hope this helps...does this answer your question?

Thanks, -Hugh

[freemantong]

Thanks for your reply.

Since i am now construct on a level luffing crane, i would like to know if i use the dynamic simulation, when I tried to apply a load force, only one unknown force could be calculated. I would like to know do Inventor provide a kind of force equilibrium or free body diagram by showing all the force associated.

Hope some expert in Inventor or Autodesk product could provide me some comment,