Composite Freesize optimization - why do i get a constant thickness?

lswf

Hello,

i was trying to run my first composite freesize optimization with the support of this Video: https://www.youtube.com/watch?v=6PJeW3cVpsM&t=1186s

 

In the results is just one constant thickness and now I am wondering what I am doing wrong? (Model is attachted)

 

Thank You!

Swanneck Freesize.hm

Adriano_Koga

Hi,

check your optimization formulation.

 

You have requested:

Minimize Compliance (meaning Maximize Stiffness)

 

as you don't have any constraints (neither deisgn constraints, neither manufacturing constraints), the trivial solution is a full plate with all material possible.

Usually if you're using min Compliance, it goes with a volume fraction constraint, forcing/limiting maximum amount of material.

If you take a look at your .out file, it probably shows you this behavior.