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Recent content by bothul

  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

    Hello everybody, Dear Corus, Thank you for your advice. I works faster now with sequentially analysis. I have modeled the composite slab using shell elements. I have tied the beam to the slab. The analysis stopped due to over stress in the beam due to compression ( the beam is expanding more...
  13. bothul

    Thermal analysis of composite slab

    Hello, So, after running the Standard model again without structural loading, only with thermal conditions, the model stops at 600s. I obseerved that the beam is expanding (at the bottom flange)more than 12mm while the slab expands 1mm. Do you think this can be the cause of "in-convergence"...
  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...

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