How can I overcome the error #4800

Anees Sunesra
Anees Sunesra Altair Community Member
edited March 2021 in Community Q&A

((((*** ERROR # 4800 ***
Grid 1 connected to element 1 has no temperature
specified in load set 2. To apply zero temperature on this grid,
SYSSETTING,undeftemp,zero needs to be added to the deck.

****************
Too many error messages. Aborting run.
Current limit is 10000. Use "MSGLMT" control card to change this value.))))


I was analysing a heatsink 3D component for a practice purpose, and as per the problem statement I created the spc constraints and temperature on their respctive faces, but once clicking on Optistruct to obtain the result, I found this error appearing in the message log.
Can anyone please help me out here to resolve this issue?

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Answers

  • fujita
    fujita
    Altair Employee
    edited March 2021

    This error is due to grids without temperature. All grids have to have temperature from TEMP, TEMPD or heat transfer analysis. Please refer to the following tutorials and example. I also made a simple sample as attached.

    OS-T: 1085 Linear Steady-state Heat Convection Analysis
    OS-T: 1080 Coupled Linear Heat Transfer/Structure Analysis
    OS-E: 0600 Steady State Thermal Analysis with Convection Loading of a Structure with Insulator

     

     

  • Anees Sunesra
    Anees Sunesra Altair Community Member
    edited March 2021
    fujita said:

    This error is due to grids without temperature. All grids have to have temperature from TEMP, TEMPD or heat transfer analysis. Please refer to the following tutorials and example. I also made a simple sample as attached.

    OS-T: 1085 Linear Steady-state Heat Convection Analysis
    OS-T: 1080 Coupled Linear Heat Transfer/Structure Analysis
    OS-E: 0600 Steady State Thermal Analysis with Convection Loading of a Structure with Insulator

     

     

    This was really a great great help sir!
    I used TEMPD card image and it worked.

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