Problem Optimization
Hello everybody,
I'm trying to do a composite optimization following the tutorial that described a monocoque FSAE optimization; I made the first step (free size optimization) but when I try to edit the ply shape for manufacturability and I try to start the second optimization, I have an error:
A fatal error has been detected during input processing:
*** See next message about line 31 from file:
C:/Users/Salvatore/Desktop/Altair ottimizzazione manuale/Ottimizzazione/Ottimizzazione con DOF
'DESOBJ(MIN)=6'
*** ERROR # 1041 *** in the input data:
Card DESOBJ conflicting with previous DESOBJ, MINMAX, or MAXMIN data.
I noticed that after the first optimization are created automatically other objectives, other otpimization control, response and constrains; maybe they could be the cause of this error?
Thanks
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Hi,
For linear analysis honeycomb modelling as in core for composite analysis is usually modelled with SOLID elements with equivalent isotropic properties. The ply’s/laminae which are the face sheets on either side of the core are modelled with Shell elements (PCOMP/PCOMPG/PCOMPP) with orthotropic material property.
Regards
Rahul R
Hi Salvinho,
I think there are two objective functions. Can you please check this?