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Abaqus Tips

Practical tips for working more effectively in Abaqus/CAE — covering file management, the query tool, result interpretation, and UI shortcuts.

How do I set the working directory?

The working directory is the folder where Abaqus writes all files associated with your analysis. Setting it correctly is important because:

  • All job output files (.odb, .msg, .dat, .sta, .log) land in this folder
  • If the working directory is left as the default (often the Abaqus installation folder or C:\temp), you may have trouble finding your files, and permission errors are common
  • Keeping a separate working directory per project prevents files from different analyses mixing together

How to set it:

Go to File > Set Work Directory…, navigate to your project folder, and click OK. Set it every time you open Abaqus before running a job.

What files does Abaqus generate during an analysis?

When you submit a job, Abaqus creates several files in your working directory:

Extension Contents When to look at it
.inp Input file — the full model definition in text form When running from the command line or editing directly
.odb Output database — all results (field and history output) Always — this is what you open in the Visualization Module
.msg Message file — convergence history, warnings, errors When a job is slow or fails — shows iteration counts and where problems occurred
.dat Data file — printed tabular output (if requested) For specific printed summaries, less commonly used
.sta Status file — one line per increment showing progress Quick check on whether the job is running normally
.log Log file — general startup and licensing info If the job won't start at all
.lck Lock file — indicates the job is currently running Disappears when the job finishes; if it lingers after a crash, delete it manually

For most debugging, the .msg file is the most useful — it shows exactly where the solver ran into trouble and why it cut increments or aborted.

How do I use the Query tool?

The Query tool lets you interrogate your model interactively in the viewport. Access it from Tools > Query (available in most modules).

Useful things you can query:

  • Node/Element number — click a node or element to read its number in the command line; useful when creating path plots or history output sets
  • Distance — measure the distance between two points or nodes
  • Angle — measure the angle between edges or surfaces
  • Material orientations — check the local coordinate system direction on composite shells (important for verifying ply orientation)
  • Mass properties — total mass and center of mass of selected regions
  • Probe values (Visualization Module only) — click on a contour plot to read the exact value at that location

To probe a result value in the Visualization Module, go to Tools > Query > Probe Values, then click anywhere on the contour plot to display the result at that point.

How do I turn off stress averaging?

By default, Abaqus averages stress results at shared nodes between adjacent elements. This smooths the contour plot but can hide mesh quality problems — poorly shaped elements or too-coarse meshes show up clearly when averaging is off.

How to turn off averaging:

  1. In the Visualization Module, go to Options > Common
  2. On the Basic tab, find Averaging (or "Compute scalar field using")
  3. Change from Averaged at nodes to No averaging (element-by-element display)
  4. Click OK — the contour plot will now show discontinuities at element boundaries

If the contours look very jagged or have large jumps between elements in a region that should be smooth, the mesh is too coarse there and needs refinement.

How do I access hidden tools using the black triangle on toolbar buttons?

Many toolbar buttons in Abaqus have a small black triangle in the corner. This indicates there are additional related tools accessible from that button.

How to use it: Click and hold the button (or right-click it, depending on your Abaqus version). A flyout menu will appear with the other related tools.

This is common for:

  • Seed tools — the seed edges button reveals seed part, seed face, and delete seeds
  • Partition tools — partition face, cell, and edge variants are grouped under one button
  • View manipulation — pan, zoom, and rotate tools are grouped this way
  • Create constraints — different constraint types are accessible from one button

If you can only find one tool in a category but know there should be more, look for a black triangle on that toolbar button.

General workflow tips

Save frequently. Abaqus does not autosave. If CAE crashes, you lose everything since the last manual save (File > Save). Save before and after each major step.

Name your sets and surfaces clearly. Names like BC_fixed_root, Surface_upper_skin, and RP_wingtip_load make it much easier to identify what you're selecting later, especially in the history output manager and interaction definitions.

Check units once more before submitting. The most common source of wrong results is a unit mismatch — usually in density, modulus, or load magnitude. A quick sanity check against a hand calculation before hitting Submit takes 5 minutes and can save hours of debugging.