Rigid body use in 2D plane stress static structual simulation

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  • Last Post 04 June 2018
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blank posted this 03 June 2018

Hello,

Is it possible to use rigid bodies in a plane stress 2D static structual simulation? I can set parts as rigid but i can not add joints to them so i am unable to add boundary conditions to them.

I am trying to simulate the bending of a flexible wire between two rigid parts as shown in the picture but i can not add a fixed body-ground joint to the two rigid parts  above and below the wire in order to fix them in place. When i turn the simulation to 3D i can add joints and joint loads without any issues. Is there any way to use the joints in 2D or just fix the rigid parts in place by other means?

Thanks

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peteroznewman posted this 03 June 2018

It is possible to use rigid bodies in a plane stress 2D simulation, just not with joints.

You can create rigid-like parts by creating a material that is 1000 times stiffer than the material being bent. Then all bodies are flexible.

If you do that you can have a model that does this:


blank posted this 04 June 2018

Thanks, guess i will try this then.

PS: If i still wanted to use a rigid body as  means of reducing the total number of nodes in my 2D planar model, how would I be able to fix its position? As you confirmed joints won't work and I get a question mark when i try applying a normal fixed support to a 2D rigid body.

peteroznewman posted this 04 June 2018

You can't use joints in 2D models with rigid bodies.

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