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mithunpjohn

*** ERROR # 3405 ***

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A fatal error has been detected during input processing:

 

  *** ERROR # 3405 ***

  Internal overflow happened due to the large size of model.

  This version of OptiStruct can not solve it.

 

Could somebody help me to solve this problem

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Guest

Hi Mithun,

 

This error is due to huge model size

 

Does it happen in 2017.2 HyperWorks?

 

 

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yeah its the same in that as well. btw did you get a chance to look at the model.  In the model  I sent you, what do you think is the best constraint for the send part of optimization

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So I'm Also having this problem on 2017.2.

 

Model summary:

FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------

  Total # of Grids (Structural)        :    510577
  Total # of Elements Excluding Contact:   2829184
  Total # of S2S Contact Elements      :     16189 (no internally created CGAPG)
  Total # of Degrees of Freedom        :   1513786
  (Structural)
  Total # of Non-zero Stiffness Terms  :  36782845

 

Hardware:

 ************************************************************************
  **                Linux  3.0.101-63-default                 
 **         48 CPU:  Intel(R) Xeon(R) CPU E7-8857 v2 @ 3.00GHz         
 **                        CPU speed  3000 MHz                         
 **                   1033916 MB RAM,  65473 MB swap                  

 

Anyone know if there is a solution? 

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Hi, with help of the Altair Support I found the solution. 

 

Solution for me was to put the '-i64' flag as a run option.

'-i64'             Use executable compiled with 64-bit integer, same as -altver i64

 

You can see my model size above and I had two loadcases.

 

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Hi,

 

Using 64 bit solver should solve with 2017.2.

 

You can add this using ControlCards>>PARAM>>I64SLV

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