Derived computation, not Loadcase ?

Altair Forum User

Hi all,

With one computation with several loadcases, I know how to make derived loadcase. That's ok.

Now, I would like do the same with two computations, not two loadcase, is this possible ?

 

With the same mesh, I do two different analysis with different BC for each computation. I would like to make a 'different code' between computation 2 & 1:

 

Value_elem = Value_elem(computation_2) - Value_elem(computation_1)

 

I do'nt know how to to do that with Hyperview.

 

Any help will be appreciated!

Thank in advance,

 

 

 

 

 

 

Altair Forum User

Hello,

 

at the Create/Edit Derived Load Case Dialog is a button called 'Result Files...'. Here you can add additional resultfiles...

 

If you want to make more complex math functions you have to use the Expression Builder. Here you can add also additional result files at the button 'Add resourse:'

Then you can write your formular depended of the resourse. For displacements it looks like this: R2.V2  -  R3.V2 (('result.Displacement'-'External1.Displacement'))

 

Hopefully it works,

best regards

 

Mario

Altair Forum User

Thank you Mario !

Altair Forum User

Hi Mario,

After building my derived results from two H3D files, I saved my session into MVW format. I see the code:

 

*BeginDerivedSubcase('Derived Load Case 3', 'superposition', 3)
  *AppendSimulation(2, 0, 0, 1)
  *AppendSimulation(1, 0, 0, -1)
*EndDerivedSubcase()
 

But in Hyperworks 13's manual, I see:

 

*AppendSimulation(Subcase id, Simulation index, Scale factor)
 

So the function *AppendSimulation has only 3 arguments according to the manual. Within MVW, the same function has 4 arguments. Why is there such different ?

 

I think in MVW, the first is result source ID.

 

Thanks

 

Altair Forum User

Hello again,

 

sry, i havn't checked it yet, but at the end i think the manual doesn't reflect the real parameters for all cases....

 

Best regards,

Mario