ENGINE ERROR ID 79 : RADIOSS IMPLICIT STOPPED DUE TO LOADING DATA

Hi Alice,

ISTOP is a keyword to show the error. This error message occurs when no loading has been defined in the model or when loading is zero during the first step in a nonlinear analysis.

Below are a few suggested workarounds for this error:

1.Check loading in the model.

2.Increase the initial time step.

Let us know how it goes!

Hi George, 

Thank you for your reply.

I do not see any problems in my imposed displacement input. 

I tried increasing timestep  (from 0.001 to 0.1) but it didn't work either. Then I changed from /IMPL/LINEAR to /IMPL/QSTAT which makes it work though the h3d file shows nothing happening (no displacement).

I sent you my starter and engine file through the secure dropbox link. Thank you.

Hi Alice,

I presume this error is because of the loading data.

In the loading function can you try with values below:

X         Y

0         0

50       1

100     1

Hi George, 

I tried this and it works fine, thank you a lot ! What I did : 

X     Y

0     0

1     1

2     1

However, I wonder about Time History Data : At time 0 displacement is zero but reaction forces, which I want to output, are non-zero. How can that be ? Plus, after t=1, reaction forces still increase though displacement stays constant. I don't understand what is going on... Find my request on the attached screenshot

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

Hi again, can you give me any support on my issue ? 

Thank you,

Alice

Hi Alice,

Please check the rigid bodies defined in the model. And also, check the model for penetrations or intersections.

Please share the .out files.

Hi Alice,

This is an issue related to RADIOSS implicit and our developers are working on it to get it done.

You can upload the *.h3d or A001 file in HyperGraph and can plot the reaction forces for the node.

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

Hi George, 

This enables to begin from zero indeed, thank you !

But still, I stop displacement at time 0.5 ms (see function in my post from april 28 above). Reaction forces should decrease but they keep increasing. How that ? 

Hi Alice,

The reaction force curve seems to be bit strange with implicit options. I'll check with this.

Meanwhile I tried the same in RADIOSS explicit, and the plot seems to be fine. The model files are attached along. 

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

Unable to find an attachment - read this blog

Hi George,

Thank you for this update ! I check it later and come back to you.