ERROR tracking for RADIOSS crashworthiness Loadcase

Altair Forum User

Hi All,

 

I am new to Radioss ERROR trouble shooting.

I am doing the crashworthiness for Aircraft seating 16g.

recently I had facing quite a lot of ERROR while I tried to simulate my simulation.

I believe my loadcase set up still got lots of issue, i am opening this thread so that in the future ERROR tracking for RADIOSS can be easy for those having same issue as reference.

 

So here is my ERROR encounter. normally what will cause this and how we can solve this accordingly?

 

 

Thanks.

 

Regards,

Kin Poh

Altair Forum User

Hi Kin Poh,

This issue is due to the time step drop in the model.

We need to check the model to find the issue. You can check the interface if there are any penetrations/intersections present in the model.

For better troubleshooting of the run, open the engine out (_0001.out) file in Textpad/Notepad and you can trace what is causing this time step drop:
 

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

This could be due to an element, node or an interface.

 

In case of an element, check the related material (especially its Young modulus and density in case of an elastic-plastic material; and its viscosity in case of a visco-elastic material). There must not be an error in the units system that this data is given in.

In case of a node, check the characteristics of connected elements. If the node is on the master side or the slave side of an interface, this interface must be verified.

In case of an interface, the gap of the interface must be verified if some failure happens on the master or the slave side of the interface.