I/O options for MFREQ analysis

IRA_EM_21281
IRA_EM_21281 Altair Community Member
edited October 2020 in Community Q&A

Hi All,

 

Currently I am getting 0 values results for the acceleration, displacement and 3d element stress quantities when I define the following in the I/O section

 

FORMAT H3D     
OUTPUT,H3D,ALL,BYITER
SCREEN OUT         
ACCELERATION(H3D,REAL) = ALL
DISPLACEMENT(H3D,REAL) = ALL
PRETBOLT (OPTI) = YES
STRESS(H3D,REAL,VON) = YES

 

I suspect I am missing some other setting?

 

 

 

<?xml version="1.0" encoding="UTF-8"?>zeroS_ValuesQuantities.PNG

Answers

  • Adriano A. Koga
    Adriano A. Koga
    Altair Employee
    edited June 2020

    Are you looking at the right frequency value?? Maybe it is just set to Frequency = 0;

    You should be using transient animation mode for this, and then change frequencies.

    image.png.30a1fea811affb0c906693fd6411b580.png

     

    Usually people also request results in Punch format to plot them in HyperGraph as well.

     

     

    FORMAT H3D     
    OUTPUT,H3D,ALL,BYITER  >> this is only for Optimization
    SCREEN OUT        >> ok, but doesn't relate to FRF specifically. 
    ACCELERATION(H3D,REAL) = ALL >> only Real values? Might want to get Both Real and Imag or Mag and Phase
    DISPLACEMENT(H3D,REAL) = ALL>> only Real values? Might want to get Both Real and Imag or Mag and Phase 
    PRETBOLT (OPTI) = YES >> doesn't relate to FRF
    STRESS(H3D,REAL,VON) = YES >> only Real values? Might want to get Both Real and Imag or Mag and Phase 

  • IRA_EM_21281
    IRA_EM_21281 Altair Community Member
    edited June 2020

    Hi Adriano,

     

    The some of the above settings are for previous loadsteps. I am still working on the problem. Will update accordingly.