Connect a Laminate and a PBEAM

Diogo Ferreira

Hi there,

I´ve been having a problem. Im trying to modelate a rectangular laminate and simulate a 3-point bending simulate to the laminate. I have 2 study cases:

-The first i test only the laminate

-The second one i remove some part of the honeycomb and insert a PBEAM is a rectangular cross section so it can fill the space where the honeycomb was taken off

 

When i run the analisys on OpticStruct, the results with honeycomb and w/o honey comb with PBEAM are exactly the same. It´s like the analisys are not studying the influence of the beam. 

I attached the two files im testing.

teste.hm - is the normal laminate at 3 point bending

testefirewall - is the laminate with the BEAM reinforcement

 

Is that something to do with element connectivity?

Unable to find an attachment - read this blog

Altair Forum User

Hi,

Even without the beam the results are same. Looks like the structure stiffness did not change with beam 

 

Try this. Remove some more honeycomb (say upto half of the length) and use Beam.

Diogo Ferreira

But is it to give the exact same value with and without honeycomb and with or without beam? Gonna try this now and iºll give you feedback soon

Thanks for the answer

Diogo Ferreira

Just tested you suggestion, and i´m having the same conclusion.

As you can see on the image i attached, the results are different now because i removed the honeycomb, but with or without PBEAM it makes no difference. Is it anything to do with welding the beam or to the analisys it isn´t necessary?

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Altair Forum User

Hi,

 

I am going to run few test cases and I will update to you soon. 

Diogo Ferreira

ok, i will wait for a reply

Diogo Ferreira

Any update?