ERROR #1461 in the input data: Card "DLOAD" is not allowed for this subcase type.

M.Y
M.Y Altair Community Member
edited March 2022 in Community Q&A

Hi all,

 

I am trying to do a nonlinear transient heat transfer analysis. I referred to example analysis (https://2021.help.altair.com/2021/hwsolvers/os/topics/solvers/os/manifold_nonlinear_transient_heat_transfer_os_example_r.htm) and created my model accordingly. As you can see from pics, the subcase card in my model is identical to the example. Despite this, the solver is unable to run my model due to Error 1461. The Optistruct manual also instructs to use DLOAD in subcase to reference to TLOAD load collector...

My model:

image

Example:

image

 

 

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Answers

  • Robert Hoglund
    Robert Hoglund
    Altair Employee
    edited March 2022

    Hi M.Y,

    Here are a couple suggestions.  To run the nonlinear transient heat transfer analysis you should define timestep parameters with the TSTEP card so the solver knows how many timesteps are required.  Also, you need to define the thermal conductivity on MAT4 for its temperature dependence that is referenced on the MATT4 card.

    Thanks,

    Rob H.

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