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Rd-3500 Tensile Test Problem

Hi,

I am trying to do a tensile test by following Rd-3500 tensile test tutorial. I am doing the test at version 12 and engine file tool does not exist at version 12. I'm not very good at the program. That's why I couldn't file up necessary values to output control cards. If anyone help me to make necessary changes to control cards, I'll appreciate that.

Thank you in advance;

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Radioss

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Altair Forum User

Hi Ismail,

In HYPERMESH, you can try Tool>Creat card>Engine Keywords.

lct

İsmail

Hi Ismail,

In HYPERMESH, you can try Tool>Creat card>Engine Keywords.

lct

Thank you for your helps. I could create all necessary cards

İsmail

I encountered another problem. I attached the solver file. I couldn't solve the problem. This is the solver file:

.. BLOCK FREE FORMAT

.. STARTER RUNNING ON 1 THREAD

.. CONTROL VARIABLES

.. UNITS SYSTEM

.. FUNCTIONS & TABLES

ERROR ID : 156

** ERROR IN FUNCTION READ

.. MATERIALS

.. NODES

.. PROPERTIES

.. 3D BEAM ELEMENTS

.. SUBSETS

.. ELEMENT GROUPS

.. PART GROUPS

.. NODE GROUP

.. BOUNDARY CONDITIONS

.. IMPOSED VELOCITIES

.. DOMAIN DECOMPOSITION

.. ELEMENT GROUPS

.. ELEMENT BUFFER INITIALIZATION

.. GEOMETRY PLOT FILE

.. ERROR ==> NO RESTART FILE

ERROR TERMINATION

------------------

1 ERROR(S)

0 WARNING(S)

PLEASE CHECK LISTING FILE FOR FURTHER DETAILS

==== End of solver screen output ====

==== Job completed ====

Thank you in advance

Altair Forum User

Hi,

Looks like the function you defined is either wrong or doesnt read. Please check the function in your model.

İsmail

Hi,

Looks like the function you defined is either wrong or doesnt read. Please check the function in your model.

the function you mean is imposed velocity function?

Altair Forum User

Yes, can you check the function referred in imposed velocity?

İsmail

Yes, can you check the function referred in imposed velocity?

I have to do a tensile test for a part which is in nanoscale. I tried to modify the imposed velocity given at Rd-3500 tutorial but I'm not sure whether I put the correct values. For X=2 nm and y=0.5 nm. What should I put the scale values and curve values? Thank you in advance

Altair Forum User

Hi Ismail,

assuming the measuring meter is NanoMeter and time is seconds.

X should be in seconds and for imposed velocity Y should be in nm/sec.

So start X from zero which means the imposing velocity starts from zero.

İsmail

Hi,

I managed to run the model without any error on radioss. However remaining time began to increase after some time and it continues to increase. Is it a major problem and will it start to decrease and analysis will be completed?

Thank you for your helps. I appreciate all of them

İsmail

Aftrt that, analysis stopped. It said that ** STOP : ZERO OR NEGATIVE VOLUME FOR 3D-ELEMENT ID=36588

ERROR TERMINATION

What should I do to overcome this problem