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  1. isok89

    Shear stresses in a node

    Greetings all, How do I determine the shear stresses in a node of a SR4 element? Given in the image below. I tried S12 but the results I get are unclear. Thanks in advance
  2. isok89

    advice on mathematics

    Dear all, I am seeking your advice on the following issue: I am a soon to be graduate with a MSc in structural engineering. Soon I'll start with an MSc degree in geotechnical engineering. However I am not satisfied with my level of understanding of finite element method, continuum mechanics...
  3. isok89

    connection modelling in abaqus (time history analysis)

    Dear all, I am planning to conduct a time history analysis of simple masonry residential building (two floors) with a shallow foundation, this includes the soil block with a time signal beneath to simulate an earthquake. I am looking for tutorials or manuals on how to manual different...
  4. isok89

    Shear modulus of wood frame shear walls

    Hello, I am trying to determine the shear modulus of a wood frame shear wall. --> combination of plywood, chords and nails. If anyone here has useful references (international building code or reference) without extended use of formulas I would appreciate if you'd post them. My problem is...
  5. isok89

    Second degree in geotechnical engineering?

    Greetings all, I posted my question also in the 'corporate survival' thread but as I saw there is a specific forum for geotechnical engineers, I'll post it here: I am a junior structural engineer and I have recently completed a Master's degree in Structural Engineering. Currently I have...
  6. isok89

    Second Master degree for a structural engineer?

    Greetings all, I am a junior structural engineer and I have recently completed a Master's degree in Structural Engineering. Currently I have nearly a year of work experience. During my S.E degree I got interested in geotechnical engineering. I have the ability now to pursue a Master in...
  7. isok89

    stresses in global x direction within shell element

    Hi, I'm trying to deduce the stresses in my shell element S4R in the global x-direction. I requested S11 and S22 in history output but there are large differences for the positive (upper surface) and negative (bottom surface). Can anyone explain what the correct procedure is?
  8. isok89

    Beam subjected to moment only

    I have subjected a thin-walled beam to a moment load only by using references point on both ends (supports). - Shell elements - Implicit dynamic solver with quasi-static application - moment applied at supports The supports (total cross section EDGES due to shell elements at the supports) are...
  9. isok89

    Wrong eigenmode

    Hi all, I am looking for the first eigenvalue of a three-point-bending simulation. It concerns a three point bending test on a hat profile, by using a point load in the centre. I'd expect to get an eigenmode where the compression flange (upper flange) buckles. However the eigenmode I get is...
  10. isok89

    Abaqus scripting GetClosest command

    Hi, I'm trying to use the getClosest command. When using the vertices.findAt command for specific coordinates, I do get a vertex object as return. When using vertices.getClosest, the return object is a dictionary object as the scripting manual says. However this isn't accepted as an argument...
  11. isok89

    Abaqus scripting

    Hi, I have three questions considering the Abaqus scripting environment. First let me give some background info I am interested in ultimate loads of different types of beams, so the post-failure phase of load-displacement doesn't interest me. I wrote a python script which delves into the ODB...
  12. isok89

    Reporting eigenvalues

    Hi, I would like to know how I can report eigenvalues to a txt file. Currently I'm opening every ODB file to get the eigenvalue by looking at the viewport. If I know how it works in the GUI, I can script it. So does anyone know how this works within the GUI? I can't find anything in history or...
  13. isok89

    Difference between smooth step and ramp linearly over time for quasi-static analysis

    I'm conducting an implicit dynamic (quasi static) analysis. My problem is actually static, but in some of my experiments, dynamic behaviour has occured. I have it displacement controlled by using a rigid plate I can use in the step: Application: quasi static and then load variation will change...
  14. isok89

    sensitivity of findAt command in Abaqus scripting

    Hello, the findAt command seems to be very sensitive. I'm simulating half hat sections which is basically in my case: a bottom Flange, connected to a web under an Angle, and on top a Top flange. There is a corner radii beween bottom flange-web and web-topflange. I used simple goniometry to...
  15. isok89

    Penetration in contact

    Hi, I'm modelling a three point bending test by applying a loadbearing plate (contact). I'm satisfied about my results. However I notice there is penetration of the rigid plate by the slave surface at the corners. Will this affect my results and if so how I can prevent penetration? Currently...
  16. isok89

    Determining step time at first yield

    Hi, I'm conducting three point bending, displacement controlled. I would like to calculate the yield moment by determining at what step time the first element yields. Does anyone know how I can achieve this?
  17. isok89

    'Noisy' load-displacement curve for beam with large corner radii

    Hi, I'm performing a three point bending test with a contact plate, displacement controlled. I use shell elements and my cross section is basically a thin walled hat shaped section susceptible to local buckling. For cross sections with a large corner radii (using hat sections)I have an...
  18. isok89

    failure modes and static/dynamic solver

    Hi, I am working on a three point bending test with a contact plate for thin walled beams. Overall there is a symmetrical failure mode, for some beams there is an assymetrical failure mode. For the assymetrical, yielding of the beam occurs at one side of the contact plate which leads to...
  19. isok89

    support modelling

    hi I am modelling a three point bending test with varying spans, I applied the load, displacement controlled by contact modelling. I use rigid supports with only u3 and ur1 free. For large spans (bending moment dominating), I have nice results(0-3%)for ultimate load by using stabilization...
  20. isok89

    Custom incrementation based on time interval

    Hello, Is it possible in Abaqus to adjust the increments based on the specific time interval? I have a total step time of 1, between 0.23 and 0.26 I have a maximum with a very steep slope. I'd like to use maximum time increments of 0.1 or 0.05 globally and for the specific interval of 0.23 -...

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