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Simulation - Create a cable in Simulation?

[ Edited ]

Hi all,

 

I am busy to calculate a frame in Simulation via the Frame simulation option. The frame will be lifted by means of forerunners that are not more than a fancy name for cables.

At this moment they are rods that are placed over a 3D-sketch. How do I tell simulation that these rods are actual cables? So only pull but no push.

I think I need to change something in the material table but don't know it for sure and don't even know what I have to change or add. I have added the 'Moment of Inertia' and close to zero, but that seems to be no succes.

 

Could any of you help me?

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Daniël Schuiling
Project Engineer @ EMCÉ Winches
8 REPLIES

Re: Simulation - Create a cable in Simulation?

[ Edited ]

Daniel,

I believe SE Simulation isn't capable to solve this, you need to go to Femap.

In SolutionCenter you find two articles on this:

 

http://solutions.industrysoftware.automation.siemens.com/view.php?si=002-7005077

https://solutions.industrysoftware.automation.siemens.com/docs/newsletter/modelling-a-cable-using-fe...

 

/Ulf 

 

 

Siemens EMEA GTAC Support

Re: Simulation - Create a cable in Simulation?

@Ulf_Eriksson, thank you for your reply.

I already thought so but wished it could.

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Daniël Schuiling
Project Engineer @ EMCÉ Winches

Re: Simulation - Create a cable in Simulation?

Hi Daniel,

 

If I follow what you're trying to do, you don't need to model the cables to solve this problem.  Can you reply with a screen shot and I'll mark up how I would constrain it?

 

Kindest regards,

 

David Haag, M.E.

Haag Enterprises

Re: Simulation - Create a cable in Simulation?

@HaagEnterprises, thank you for trying to help me.

Hereby the screenshot.

Knipsel.PNG

I can even upload the model if that helps you more.

In this model, above is fixed. Slings are released where the hollow sections begin. The slings are constrained with a user-defined tool.

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Daniël Schuiling
Project Engineer @ EMCÉ Winches

Re: Simulation - Create a cable in Simulation?

Yes, if you upload the model, that would be even better, as I can make a video tutorial for you.

Re: Simulation - Create a cable in Simulation?

Hereby the complete file

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Daniël Schuiling
Project Engineer @ EMCÉ Winches

Re: Simulation - Create a cable in Simulation?

[ Edited ]

A few questions:

  1. What is creating the load that is applied to the bottom of the frame?  Does this component form a rigid connection between the 4 bottom perimeter tubes?
  2. How are the cables attaching to the frame?  Clevis and pin?

 

Re: Simulation - Create a cable in Simulation?

Hi @HaagEnterprises,

 

as I have stated in a private message I was not able to reply to you sooner.

The frame is a some kind of container frame according the calculations of DNV.

The load on the bottom of the frame results from a equation by DNV that we have changed into a torque on the main plate and resulting forces on the hollow sections.

 

The cable are hold by very simplified shackles.

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Daniël Schuiling
Project Engineer @ EMCÉ Winches