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  • Users: anoop_1989
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  1. anoop_1989

    Welding Step time in Abaqus

    If I am using a DFLUX model for welding with cf=4 and cr=8 for a 2d plate with 400 mm length and 6 mm thickness. Suppose the velocity is 1.33mm/s. What should be the step time I have to use for the heating? is it cf+cr/v ?
  2. anoop_1989

    Abaqus job not running?

    I have 47 license available out of 75. and I have used 32 threads to run the analysis, which requires 21 license only. Once the job is submitted it is not running, but its showing till submitted. Do I need anything else to start it running?
  3. anoop_1989

    GPGPU acceleration unavailable in Abaqus

    Dear all, I am using a system with Intel (R) Xeon CPU E5- 2620 v4 @2.10GHz ,128 GB RAM,DUAL CORE , Nvidia Quadro P2000,Windows 10 pro,VS2013,XE2016 and Abaqus 2017.Though I installed CUDA 10.1 and given proper lines in the Abaqus environment file, after enabling the GPGPU acceleration in...
  4. anoop_1989

    UMAT subroutine

    How to enter the temperature dependent mechanical properties such as elasticity, plasticity etc. in Abaqus using UMAT subroutine? I want to enter the temperature dependent mechanical properties of two different materials using UMAT subroutine. Can anyone suggest the code logic?. This to call...
  5. anoop_1989

    Regarding Sequential analysis?

    Dear all, When we transfer the temperature from heat transfer analysis to displacement/stress analysis(Sequential) in Abaqus, Can we transfer the elemental temperature, or only nodal temperature is possible? if yes 1.How can we transfer the elemental temperature(TEMP) in sequential analysis...
  6. anoop_1989

    Calculating cooling rate for incorporating phase transformation in welding?

    How to find the cooling rate in welding using Abaqus Subroutine for incorporating the fraction of Martensite due to phase transformation
  7. anoop_1989

    LOW STRESS VALUE AFTER COOLING

    DEAR ALL The below given is the user subroutine I have used to incorporate the phase transformation phenomenon after welding. The code runs fine without phase transformation effects. But when I incorporate the austenite and martensite values the results are not matching? 1.The residual stress...
  8. anoop_1989

    how to find the temperature difference in Abaqus using USDFLD and GETVRM

    Dear all, I want to calculate the temperature difference in a heat transfer analysis. But I am getting the same values in the filed and state variable, which leads to zero difference in temperature. Can anyone help me to find out "how to calculate the temperature difference between the last and...
  9. anoop_1989

    Regarding the temperature in the previous increment

    Dear all, I am trying to get the TEMP output using the GETVRM subroutine.But after the analysis when I check the defined state variable the TEMPERATURE VALUES are zero.Can any one help.Attaching the inp and subroutine with...
  10. anoop_1989

    Abaqus welding

    Dear all Can anyone suggest a classical paper on Welding 2D analysis?
  11. anoop_1989

    Abaqus SUBROUTINE development

    Dear all, Do any have idea on how to develop a new subroutine(not existing) and how can we link that same to Abaqus? Any references to study development of subroutine
  12. anoop_1989

    Abaqus material property behavior

    Dear all How the material property in Abaqus behaves?. For example if in the properties I have entered the values of plasticity till 1200 degree Celsius. But suppose during the analysis the temperature is above 1200 degree Celsius. How the Abaqus going to take that effect. Will it plot a linear...
  13. anoop_1989

    DFLUX Subroutine

    Dear all, When we apply the Goldack ellipsoidal model in DFLUX subroutine, how do we use the front and rear power density terms?. Do we need to apply the same as a sum of front and rear power density, or we need to apply them separately to get the complete ellipsoidal model.
  14. anoop_1989

    Calling STEP in Abaqus UEXPAN SUBROUTINE

    Dear all, I am using Abaqus UEXPAN subroutine to include the phase transformation effects. As the Austenite transformation and martensite transformation are taking place at two different STEPS (Heating and cooling) I have to include the KSTEP in the F condition of UEXPAN subroutine. I tried...
  15. anoop_1989

    phase transformtion in welding

    Can any one suggest an article considering the effect of cooling rate in formation of martensite during welding and its impact on residual stress?
  16. anoop_1989

    CURRENT TEMPERATURE IN ABAQUS

    Dear all, I am doing a phase transformation analysis in Abaqus . I tried to use UEXPAN subroutine to include the volumetric strain due to the coefficient of thermal expansion. But when I am using the Koistinen-Marburger equation for the martensite formation I want to call the current...
  17. anoop_1989

    Subroutine for coefficient of thermal expansion

    Dear all, I am trying to run a coefficient of thermal expansion subroutine using the UEXP subroutine. For this, like a first step I tried a simple thermal stress analysis on a 0.2*0.1steel bar giving a body heat flux. The calculated stress values are matching with the theoretical analysis. Now...
  18. anoop_1989

    Applying Load at nodes in Abaqus

    Dear all, I would like to apply a concentrated load at each node (loads are different). The total number of nodes is more than 32000.Can any suggest any method to do that?
  19. anoop_1989

    Combined raditaion and convective heat transfer analysis in Abaqus

    Dear all I would like to give combined radiation and convective heat transfer coefficient for the thermal analysis of the welding process in Abaqus. How can I give the same? The equation to be used for predicting the same is h=0.00668T when T<<500oC 0.231T-82.1 when t>>500oC Paper ref:3D...
  20. anoop_1989

    Regarding phase transformation subroutine

    Dear all, I am trying to simulate welding residual stress by incorporating phase transformation effect. After going through the literature, in most of the cases, the phase transformation is incorporated through Abaqus subroutine HETVAL along with STATEV. But when I referred the subroutine format...

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