differences between the pattern grouping modes

Altair Forum User

Hello at all,

 

during a topology optimization i wanted to add a pattern grouping to get symmetry.

But i ´ve got the same results in 1-plns sym, 2-plns sym and 3-plns sym. So i can´t see the differences between the pattern grouping modes and how to use them correctly.

 

Please, is there someone who could explain the different types of pattern grouping and their fields of application?

 

 

Thanks a lot!

 

Rizzo

 

 

tinh

Hi

1-plns sym => make 2 groups

2-plns sym => make 4 groups

3-plns sym => make 8 groups

 

their field of application is what you want: if you want your structure has 2 similar groups => use 1-plns sym, 4 similar groups=> use 2-plns syms, ...

if you want axial sym => use 'cyclic'

Altair Forum User

Hi Rizzo,

 

Please refer to Altair OptiStruct > User's Guide > Design Optimization > Manufacturing Constraints > Manufacturability for Topology Optimization: on Help for more information 

Altair Forum User

Ok,
thanks at all for your tips.
 
Greets