I am getting an error when I start up my Network Licensed Software: "E0002 - Could not get a license" What does this mean?
There are several possibilities for why this error could be appearing.
1. The license code has not been installed, or is not running, on the license host. Be sure that the license process is running on the license server. Use one of the license manager tools to verify that the license for the software has been added. Note that the license server commands are case sensitive. Be sure to use a capital "A" (lslic -A [license code]) as a lowercase "a" will only add the license code until the license server is restarted.
2. The client machine can not see the license server. Be sure that TCP/IP file sharing between the machines is enabled. Set the LSHost environment variable on the client machine if necessary.
3. Another user(s) is currently using the software. You can use the license manager tools to see how many users are currently logged in and from what machines.
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I am getting an error: "IOPT = 1 Analysis stopped, parameter ratio value outside K-table domain." What does that mean?
For some geometries (specifically Cylinders and Spheres), Signal FFS™ uses tabular solutions to determine the K values. These tabular solutions are only valid for certain ratios of a/t, a/c and t/D. The error message indicates that the analysis engine tried to look up a value outside of these boundaries. There are several different reasons that this could occur.
1. A Limiting Flaw Size Evaluation is being performed. In a Limiting Flaw Size Evaluation, Signal FFS™ solves for the failure conditions of a number of different crack size (a/c) ratios. These failure conditions are sometimes out of the bounds of the tabular solution. In this event, the particular data point is left off of the curve and the above error message appears. This message is a warning only. The points on the limiting flaw curve which are returned are all from inside the table boundaries. The message is left as an explanation for why the curve may be unexpectedly truncated.
2. An arbitrary stress distribution (Weight Function) is being used. Using the stress table, Signal FFS™ generates a K Table for the specific load profile. The size of this K Table is limited by the range of stress values entered into the Weight Function. If a fatigue analysis is being performed (especially if the crack is being grown to failure), the crack can grow out of the bounds of the automatically generated table. If you are getting this error message, you may want to consider extending the stress distribution to a dimension slightly greater than the thickness. This will allow the table interpolation routine to handle the crack if it grows through the thickness. It should be noted, however, that the weight function is not recommended for use once the crack depth (a) grows past 4/5ths of the thickness (t).
3. The geometry of the particular problem is outside of the boundaries (for example a cylinder with a thickness greater than the inside radius). Signal FFS™ is currently unable to solve such a problem.
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To change the hardware acceleration setting for the graphics hardware follow these steps:
1. open Start/Settings/Control Panel/Display
2. in the Display Properties form, click on the Settings tab; click on the Advanced button in the lower right corner to open the advanced form
3. click on the Troubleshooting tab 4. move the Hardware acceleration slider bar to None; click OK; the screen may go blank for a moment as the graphics are reset
5. try starting FEACrack, opening the model file (*.elt), load the results and view the stress results
If the mesh and results appear correctly, then the software driver for the video card needs to be updated. Usually, the computer or video card manufacturer web sites will have updated video card driver software available for download.
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I am having problems running a WARP3D analysis. I get an error about a "non-converged solution" even though I am running an elastic analysis. How can I get WARP3D to solve my problem?
The solver (VSS) in the standard WARP3D builds has a known bug on some machines that prevents the analysis from running and causes this error. As a result we now include a set of builds with an alternate (CXML) solver. There should be a set of WARP3D executable files [LINK] in the main program directory that have a "_CXML_" as part of their name.
To run WARP3D with the CXML solver, select Program Options from the Tools pull down menu. Then select the CXML Solver option from the Type of WARP3D File to Write option menu. When this option is selected the WARP3D input files that are created should have a "_cxml_wrp.inp" file extension. If the files are run using the Run FEA option, the program will automatically select the correct WARP3D version to run.
In addition to changing the file extension, the CXML solver option changes one line in the WARP3D input file from:
solution technique direct sparse vss
to:
solution technique direct sparse cxml
This command tells WARP which type of solver to use. The WARP3D builds provided are set up to run only VSS or only CXML. Due to compatibility issues we do not provide a WARP3D build that can run either solver, so CXML files will only run with the CXML solver build of WARP3D.
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