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Crashphys

Creating a Breakout model

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Thank you for the info.

 

Considering I have to import the displacement data, is it possible to create a refined mesh of the portion of interest too, or will it have to be the same mesh exactly?

 

Thanks

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The nodes of the imported loads are equivalenced with those of the detailed model which are overlaying each other as a consequence of importing the free body loads. In the attached tutorial (HM-9010) this is done in step 10. I see no reason why it can't be done using displacement data.

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Hello,

 

I was following the tutorial HM 9010 up until step 8. When I get to the highlighted step, no loadcases are found. I did skip the first part because I am not interested in creating shear moment/potato plots and started from step 7. The tutorial said I could start from this point. If anyone has suggestions on what I might have missed please let me know.

 

I would also like to know: When performing analysis on a cross section, how can I also enforce the displacements correctly? See the last two pictures attached: The first is a panel in my global model. The second is my panel in the DFEM (.fem files attached). I used the FBD->Forces tool to extract the loads on the section I want, however when I import those forces to my model via BC->Create->Forces->Interpolation, I end up with a ridiculous stress concentration in one part of my model. I'm not sure why this happens, but as far as I can tell there is no way to constrain the model correctly according to the global model. In the global model, all nodes are displaced a certain amount, but in the DFEM the nodes along the edge are forced to be constrained. Is there a way to ensure agreement between the two models?

image.png.8048e39cb9e7b76541fcaef1a9725ab7.png

image.png.46352c58a265c4a929dc6f9931ca58ed.png

 

image.png.01b2434b04c5e3a98178b7377811342d.png

 

 

image.png.40c8d6ca7b835ee0f83917e909b517cf.png

EquivalentStaticModel_Panel4l.fem EquivalentStaticModel_Global.fem

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