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  • Users: alexzive
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  1. alexzive

    geometry optimization multilayer structure

    Hello there! I am looking for tips to solve a geometry optimization with Abaqus (--> attached file http://files.engineering.com/download.aspx?folder=db94b8e6-47da-4a03-80e2-468ba1796269&file=Model2optimize.jpeg) Mat1-4 are different materials, all with different thermoelastoplastic mat.data...
  2. alexzive

    Stress/Strain FE-Homogenization vs Experiments

    Hello, (sorry for reposting, I found later,this forum may be more appropriate). This is a general micromechanic question. Suppose we have a microstructured 2-phases material with random inclusions (or a porous material with random pores) and we make a real tensile test (monoaxial loading in...
  3. alexzive

    extrapolate on a straight line crossing the mesh

    Hello there, I would like to extrapolate thermal flux values (HFL) on a virtual horizontal straight line which crosses my non-regular mesh (see red line in the attached file). I'd like to have this values on something like 100 points belonging to that line at regular distance. Is there any...
  4. alexzive

    values in no-mesh points

    Hello there, how to get (extrapolate) values from a simulation in certain points which do not belong to the mesh? For example I would like to average the resulting Heat FLux field on a equally spaced grid of points on my model (see below), because my mesh has some local nodes concetration due...
  5. alexzive

    integrating field outputs on a 2D surface

    Hello, a post-processing question: how to integrate scalar field values over a 2D domain which belong to a 3D model? Let suppose I have a cylinder with a void sphere inside and I perform steady state heat transfer with fixed T1 and T2 on both side of the cylinder (S1, S2). I then want to...
  6. alexzive

    element area

    Hello, I would like to get the element area for any individual element of my irregular 2D mesh. Is it stored somewhere (in the cae or odb file)? How to get it via odb scripting commands? (no info in the documentation) or should I calculate it from nodes coordinates? Manx Thanks, Alex
  7. alexzive

    Themomechanical Analysis

    Hello there, I have a problem understanding some results from Thermomechanical Analysis with Abaqus . I performed some simple tests on a 2D plate (all in the zip file). UNits: Kg, mm, J, s, N. Each simulation consists of 2 steps: Step-1: heating up the plate homogenuosly with the same heat...
  8. alexzive

    unit for force always N?

    Hello, if my basic units are different from kg,m,s, am I still allowed to use N (Newton = 1 Kg*m/s²) for forces (loads) ? or should I adjust the unit for my forces accordingly (i.e. g*mm/s²) ? many thanks, Alex
  9. alexzive

    Self-Weight

    Hello there. How does Abaqus handle "self weight" in model parts? (I mean gravitational weight due to gravitational mass) 1) is it automatically calculated once you give the density in the mat. properties as a distributed load on the vertical axis ? or should I specify a dload which corresponds...
  10. alexzive

    units for Young Modulus

    Hello, this is maybe a stupid question, but just to be sure. Suppose my model is representing a microstructure with chosen unit-lenght "micrometers = 10^-06 m = 1 um". should I also accordigly express the Young's MOdulus and all the stress values in N/um²? for example from a typical value of...
  11. alexzive

    problem with RESTART

    Hello, I have to restart a truncated job (cause: interrupted power supply). In my original inp file I put *Restart, write, frequency=50, overlay Now I have the .res file. Note that original inp file is not in the abaqus-working-dir where the .res and all other simul. outputs are. I...
  12. alexzive

    from ORPHAN MESH to Geometrical. Model

    Hello Everyone, Maybe this is a stupid question, but do you think is it possible to get a geometrical model from an Orphan Mesh making some reverse engineering? Consider I am working on 2D models/mesh. I know that OM are those meshes without a geom. model, but I would like to know if there...
  13. alexzive

    basic questions about time in ABQ

    hello, my question is: 1) if I choose second as time unit (e.g. in heat transfer analysis --> flux in J/s/mm²) then my single time step in the simulation corresponds to one second, right? (ps: I am using ABQ-STANDARD) 2) if I take 2 simulations both referring to the same model, both...
  14. alexzive

    quadratic vs linear elements

    Hello there, I would like to know the difference in using quadratic elements instead of linear ones in the mesh . As far as I understood, the integration points inside a single element are considerably increased (for a 2D Square from 4 to 9) and the values of the nodes-variables "quadratic"...
  15. alexzive

    Changing "work directory" doesn't work

    Hello there, I am trying to change my work directory under Abaqus (FILE-->Set Work Dir. + Save Options local and home) but at every new start, Abaqus re-set it automatically to its original value . I can see it just re-clicking in "FILE-->Set Work Directory". It simply doesn´t remain for the...
  16. alexzive

    Cavities/Holes in Abaqus

    Hello Everyone, I am pretty new here. I am with Abaqus since three months. I am experiencing some problems by modelling holes inside parts or assemblies. What I have tried to date is to generate some structures with holes inside and perform some simple step with simple loads (i.e. concentrated...

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