Error # 789

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

I am trying to run a composite sizing optimization and when I run optistruct it is able to run through iteration 0 but as soon as it starts iteration 1 it encounters:

 
The updated TOTAL_Ti in parts of STACK #        1 is invalid.
 The updated TOTAL_Ti is zero.
(x16)
 
*** ERROR #  789 ***
 Invalid design properties w.r.t. the design variables were found.
    number of invalid property items =         16
 
 This error occurs in module 'chkpdrv'.
 

Any suggestions are greatly appreciated.

 

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