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  • Users: Eser
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  1. Eser

    UMAT non-isothermal isotropic hardening

    Hi All, I have a problem that I need to take in to account the elastic, thermal and plastic strains (with isotropic hardening). Temperature is changing and the corresponding material properties (elastic, plastic) are temperature dependent. This can be done in Abaqus without using subroutines...
  2. Eser

    Thermal Expansion Coefficient dependent on time

    Hi All! Is anybody knows, how to define the thermal expansion coefficent dependent on temperature and time. Actually you can define a field variable dependency for the thermal expansion coefficient. Is it possible to use this option (field variable) to define a thermal expansion coefficent...
  3. Eser

    Displaying Stress Values

    Hi All! I have a model with 3 different materials (3-different sections) and they have common boundries. The elastic modulus of the materials are quite different. (about 2 times larger or smaller) I want to find the absulut maximum principal stress on one of those section. If I use the...
  4. Eser

    Thermal Stress Analysis

    Hi All, I would like to run a thermal stress analysis using the temperature distribution of a heat transfer analysis. I have the results of the heat transfer analysis. Using the "post" option the temperature of each nodes and each integration point for each increment is written to the output...
  5. Eser

    Consistent Units for Thermo-Mech Analysis

    Hi all! I have a question regarding the selection of suitable units for the calculation of a thermal-mechanical analysis. Inorder to have the stress in Mpa what should be the unit of: -Specific Heat -Conductivity -Mass Density If the units of force is N and the distances are in mm. Thanks...
  6. Eser

    Suitable Units Thermo-Mech Analysis

    Hi all! I have a question regarding the selection of suitable units for the calculation of a thermal-mechanical analysis. Inorder to have the stress in Mpa what should be the unit of: -Specific Heat -Conductivity -Mass Density If the units of force is N and the distances are in mm. Thanks...
  7. Eser

    Modal Analysis

    Hi All! I have a simple cantilever beam model, that I calculated the natural frequencies and I want to do a mode based steady state dynamic analysis. I want to first apply a load which is a sine function of the frequency. I defined it like that: *AMPLITUDE, NAME=sinus, DEFINITION=PERIODIC...
  8. Eser

    Frequency Domain

    Hi All! I wanna solve a simple cantilever-beam problem using a mode-based steady state dynamic analyses in Abaqus. I have a force at the end of the beam F=sin(freq). I want to make a verification with the theoretical model. We know the maximum displacement as Ymax=F*l^3/(3EI) using the...
  9. Eser

    Total Mass

    Hi All! I am dealing with a modal analysis in Ansys to calculate the natural frequencies of the model and I would like to know if Ansys calculate the total mass of the model during the calculations and if it is the case how can we display the total mass. I used to use Abaqus and in Abaqus *.dat...
  10. Eser

    force as a sine function

    Hi All! I would like to define a force in frequency domain as a sine function of the frequency. I am planing to use *amplitude option to define the sine function, but I am not so sure about it. Does anybody know how to manage this problem? Thanks in advance, Eser
  11. Eser

    Eigen Modes

    Hi! I am trying to do an eigen value anlaysis of a model using Abaqus. I made the program run and have the result using "*Frequency" option. And the command *OUTPUT, HISTORY, VARIABLE=PRESELECT" is used to have the results. I have the eigen values and natural frequency values in ".dat" file...
  12. Eser

    Natural Frequency Consistent Unit

    Hi Everbody! I have a general question about dynamic analysis. If we want to have the natural frequency in Hz and we have the distances in mm and the Young modulus in MPa what should be the consistent unit of material densities? Thanks in advance, Eser

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