lift frame module if

[3°minore]

Hello.


I would like to ask if someone analyzes looms through ifa.

I'm trying to verify the frame on the ground with its loads and I think it's okay.
In the case of lifting instead I did not understand how to place constraints and forces, I still do not know how to use the module well, and I do not understand if I have to create a sketch that represents the lifting chains and the crane hook.
Have any of you tried?

 

[Peppe]

as fixed points use anchoring points lifting chains, then apply gravity force where it serves and calculations

 

[Andrea Scarnecchia]

Hello.
if the objective is to analyze the condition in which the frame is lifted you can proceed in this way:
- binding points where it is hooked for lifting
- set the gravity force in the right direction
- apply any loads related to masses attached to the frame or rested on it
- launch the calculation

 

[3°minore]

Thank you.

I also ask to place the constraints:
Do I apply four "spherical" in the four lifting points, directed down or upward, or tilted along the four forces' action line?

 

[Andrea Scarnecchia]

Thank you.

I also ask to place the constraints:
Do I apply four "spherical" in the four lifting points, directed down or upward, or tilted along the four forces' action line?

Let us say that the spherical joint, blocking the degrees of freedom of translation but not that of rotation of the knot around the axis may not be the most indicated.
I would use four fixing constraints on the 4 lifting points for a first analysis.

 

[Andrea Scarnecchia]

if you want to proceed with a system of constraints closer to reality you can use custom constraints, which allow you to choose which degrees of freedom traslators and rotators block.