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  1. bothul

    Underlying element X instance Y can only have spos or sneg as a face identifier - heat transfer

    Dear all, I have created a part consisting of 2 perpendicular shell surfaces. I partitioned the part using datum plane (through both cells). I want to use the part in a heat transfer analysis. When submitting the job I get the error Underlying element X instance Y can only have spos or sneg...
  2. bothul

    Section force and rebar strain

    Hello, Referring to stress and strain of reinforcement in shell elements. After I toggle on to INCLUDE the rebar in the FIELD OUTPUT I have two extra SP in the output graph. My shell has 13 integration points. Before including rebar stress in the FIELD OUTPUT I was able to see the stresses at...
  3. bothul

    Section force and rebar strain

    Hello, I have managed the rebar issue but if you have any information regarding SF, please help Thanks
  4. bothul

    Section force and rebar strain

    Dear all, I am modeling a beam element to check the SF obtained for different position of the reference line. First I have the reference line of the CS in the centroid. If I apply a longitudinal force, I obtain SF1 egual to the force corresponding to yield stress. If I define the reference line...
  5. bothul

    Forces in connectors

    Dear all, I have modeled 3 elements which intersect in one point. the link between them is a connector (join- translation DOF). How can I obtain the section force of an element which belongs to the connection? When I try to use probe values it says "no value". Thank you in advance,
  6. bothul

    Composite beam element

    Thank you for your kind help
  7. bothul

    Composite beam element

    Dear Mauce52, By beam element I meant to say "wire" element for which the available cross-section library is presented in "Analysis User's manual". It will be very helpful if you can provide any references. Thank you
  8. bothul

    NT vs TEMP

    Thank you very much! It cleared things a little bit until I was comparing two cases: constant temperature through section and gradient through section. The attached picture shows the points considered by Abaqus. In the picture I have inserted some charts. My question is why for the constant...
  9. bothul

    NT vs TEMP

    Hello all, I have some problems understanding the meaning of the two notions NT and TEMP. I am analysing a linear element (wire) for which I defined a gradient. If I want to check the results the two variables, NT and TEMP for the same node, are quite different. Can anyone enlighten me...
  10. bothul

    Composite beam element

    Hi everyone, Is it possible to model a beam element with 2 different materials? For example a steel tube filed with concrete. Thank you, Best regards
  11. bothul

    Thermal analysis of composite slab

    Dear Corus,dear all, I am analyzing the same structure described above, concrete slab with steel beams. I have performed a sequentially coupled thermal analysis of the slab (with 7 integration points) and then a mechanical analysis. I was checking the temperatures given by the thermal...
  12. bothul

    Thermal analysis of composite slab

    ...are not increasing according to the heat transfer analysis. The temperatures in the slab are OK. The warnings I got are: The option *BOUNDARY,TYPE=DISPLACEMENT has been used with a jump in displacements at the nodes in node set WarnNodeDispBCJump-Step1 at the beginning of the next step...
  13. bothul

    Thermal analysis of composite slab

    ...(at the bottom flange)more than 12mm while the slab expands 1mm. Do you think this can be the cause of "in-convergence". The message is : ***ERROR: TIME INCREMENT REQUIRED IS LESS THAN THE MINIMUM SPECIFIED I tried the explicit model but I am pretty sure I don't do the scaling correctly...
  14. bothul

    Thermal analysis of composite slab

    Thank you Corus for reply! For both Standard and Explicit I have used: "static, general" analysis for the first step and "coupled temperature-displacement" analysis for the second step. For the Standard part the error is: "Time increment required is less than the minimum specified" For the...
  15. bothul

    Thermal analysis of composite slab

    Dear All, I am trying to model a fiber reinforced concrete slab on steel beams. I have applied the load in the first step and applied thermal conditions (convection and radiation) in the second step. The analysis reached 400seconds (tops) ( I was expecting 7000s). I have modeled the structure...
  16. bothul

    Temperature load, beam element

    THanks for the reply. The above "unknowns" are input data for temperature load (nonuniform) on elements. (in APDL)
  17. bothul

    Temperature load, beam element

    Hi I want to add a temperature on one face of a BEAM24 element. Does anyone know how to do that? What do the following mean: STLOC starting location N ____ VAL1 Temperature at location N ____ VAL2 Temperature at location N+1 _____ Val3 Temperature at location N+2 _____ VAL4...
  18. bothul

    Thermal analysis, structural analysis

    Thank you for guidance I am pretty new in Ansys and I have to figure it out how to do that. Moreover I have to figure out how to use Beam24 element. If you have any advice or references where I can see the steps for input files, please let me know. If I will succed with the model I will tell...
  19. bothul

    Thermal analysis, structural analysis

    Hello Can anyone help me to make a thermal analysis for a cross section and afterward make a structural analysis of a beam, taking into consideration the temperature distribution from the thermal analysis? Thank you Bothul
  20. bothul

    Beam thermal mechanical analysis

    Thank you n3l3 I hope I will

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