Here's some background into the model I'm trying to run:
This is a fairly large scale geological setting, done in 2D using Abaqus Explicit (6.8-3)and CAE. See attached file for a zoomed out view of the relevant bits. At this step, the parts are just settling under their own weight, and jostling...
Hi
I'm using Explicit to model some geodynamic stuff, and I've reached the point where perfectly homogeneous materials are becoming a problem. What I'd like to do is have an elastic definition for, say, granite with (E=53GPa, v=0.28) and then add a small random deviation to Youngs modulus...
I have a model step over which i need to plot the motion of a part of my model. The step has 100 timesteps, and I have COORD set as a field output. So I'm using the 'create field data' tool, and creating a new field from existing fields as "s3f100_COORD-s3f0_COORD".
So far, it's working, but...
I'm experiencing some very weird behaviour in ABAQUS Explicit 6.7 (+CAE)
I'm running a 2D model with quite complex geometry; 19 parts moving slightly against each other. Basically, push on one part and see how that moves the others. You'd expect the friction between the parts to have some...
I'm running a series of models, where it's necessary to first gradually 'unload' gravity from a shape obtained from field measurements, then to reload it with slightly different material. So I'm running a first model that applies 'negative gravity' upwards, while holding the bottom of the shape...
Hi all, I'm back with a new problem.
I have the odb of a successfully completed restart run. I'd like to visualize the deformation in the final step, relative to the deformation at the start of the restarted model run, instead of relative to the initial step of the full (non-restart) model...
I've been playing around with reading odb files through the python interface recently, as well as with restarted analyses in Explicit (CAE).
I'm wondering if it would be possible to do the following:
run a first simple analysis step
extract the results from the odb
analyze and modify them in...
I'm trying to extract some deformed coordinates form an odb file, using 'abaqus python extract.py'
The odb is call 'unload.odb'
the relevant step is called 'Settle'
I want the data from the last frame. Here's my code so far:
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from odbAccess import *...
I'm trying to define strain based failure criteria for an isotropic elastic material, using CAE. The suboption 'Fail Strain' gives me a table with five values: Tensile and Compressional failure strain for directions parallel and transverse to fibres, plus shear strain failure.
But as my material...
Is there a way (preferably in CAE) to let ABAQUS remove an element once it becomes distorted past a certain limit, based on the elements geometry?
I have a nice little model going, that abort due to excessive distortion in a certain region. However, the distorted elements have already passed...
I'm studying a model that I got as an example from a former co-worker.
She used a viscoelastic material, defined through a time-domain prony series. The three parameters are:
g_i= 0.99
k_i= 0
tau_i= 1000
I'm trying to understand what that series does. I've fiddled with the three parameters and...
Hi
I have a fairly simple question this time :)
When I tell CAE to write the .inp file for a certain job, is there a way to have it write an .inp file that is compatible with an older ABAQUS solver version?
I'm using 6.7 CAE on a local machine, but would like to run the more extensive models...
I'm trying to model some viscoelastic deformation under gravity load. I'm using an explicit dynamic timestep. The units I'm using are kilometers and years, so 1 standard gravity comes to 9.75e12 km/a^2.
If I used SI units and provide the vecotr components of the define gravity load a (0 /...
I'm modelling some effects of changing acceleration on sandstone, and I'd like to add the damping effect listed in the mechanical properties of the CAE material dialogue.
The parameters are alpha, beta, structural and composite. I've done some web research and can't seem to find a formulation...
Some wierd behaviour in CAE (or maybe I'm just to dumb to understand what it's on about).
I have a 2D polygonal part, and I'm trying to define a surface, conisting of all the lines making up the polygon. Because this part is in contact with others, I need to deactivate the 'Select entity closest...
I'm currently using a script derived from the one in
"8.5.10 An example of reading field data from an output database"
to extract the nodal coordinates for the deformed parts in an odb, in order to process them further in Matlab.
It's working fairly well, but it's annoying that you can only...
Hi
I'm still very much of a newbie to ABAQUS, and am currently getting to know my way around ABAQUS CAE. I've done some simple little elastic deformation models so far, but nothing very complex.
What I'm trying to do now, is set up a very simple 2D concept model of a piece of material (think...
I've been asked to give a short presentation about Abaqus at our weekly geology/tectonics seminar next week. I'll mainly be focussing on flexibility, especially scripting and interaction between i.e. Matlab and Abaqus.
Of course, some nice spectacular examples of models would be great to pique...
Hi
A seemingly simple question this time, but the manual isn't being helful today:
I have a script that imports some geometry into Abaqus CAE, generates the necessary meshes, materials, interactions, etc. Generally right down to the point where I only have to submit the job.
Now I'd like the...
Hi, I've run into another scripting problem. Maybe someone can give me a hint.
I'm using the following formulation to select all edges of a part instance as a surface for an interface:
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