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Analysis run not completing - help?

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Newbie

Analysis run not completing - help?

Can anyone help point me in the right direction after getting this message?

Stress error estimates are not available
because all external element edges lie
in regions that are constrained or where
the stress is potentially singular.

Resource Check (11:33:58)
Elapsed Time (sec): 43.80
CPU Time (sec): 47.46
Memory Usage (kb): 9282225
Wrk Dir Dsk Usage (kb): 206868

** Warning: Local reaction data is currently unavailable if
one or more constraints are specified in
curvilinear or local Cartesian coordinates.

6 REPLIES 6
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Re: Analysis run not completing - help?

Well... erm... what it says. How is your model constrained? Can you share a screenshot, or better yet attach the model?

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Re: Analysis run not completing - help?

------------------------------------------------------------
Creo Simulate Structure Version P-20-60:spg
Summary for Design Study "xxxxx"
Mon Mar 09, 2015 11:33:14
------------------------------------------------------------

Run Settings
Memory allocation for block solver: 4096.0

Parallel Processing Status
Parallel task limit for current run: 6
Parallel task limit for current platform: 64
Number of processors detected automatically: 6

Checking the model before creating elements...
These checks take into account the fact that AutoGEM will
automatically create elements in volumes with material
properties, on surfaces with shell properties, and on curves
with beam section properties.
Generate elements automatically.
Checking the model after creating elements...
No errors were found in the model.
Creo Simulate Structure Model Summary

Principal System of Units: millimeter Kilogram Sec (mmKs)

Length: mm
Mass: kg
Time: sec
Temperature: C

Model Type: Three Dimensional

Points: 3441
Edges: 17043
Faces: 23976

Springs: 0
Masses: 0
Beams: 0
Shells: 0
Solids: 10425

Elements: 10425

------------------------------------------------------------

Standard Design Study

Description:
-55 deg C

Static Analysis "xxxxx":

Convergence Method: Quick Check
Plotting Grid: 4

Convergence Loop Log: (11:33:44)

>> Pass 1 <<
Calculating Element Equations (11:33:44)
Total Number of Equations: 183786
Maximum Edge Order: 3
Solving Equations (11:33:46)
Post-Processing Solution (11:33:50)
Calculating Disp and Stress Results (11:33:53)

Stress error estimates are not available
because all external element edges lie
in regions that are constrained or where
the stress is potentially singular.

Resource Check (11:33:58)
Elapsed Time (sec): 43.80
CPU Time (sec): 47.46
Memory Usage (kb): 9282225
Wrk Dir Dsk Usage (kb): 206868

** Warning: Local reaction data is currently unavailable if
one or more constraints are specified in
curvilinear or local Cartesian coordinates.

Total Mass of Model: 9.988782e-01

Total Cost of Model: 0.000000e+00

Mass Moments of Inertia about WCS Origin:

Ixx: 7.45117e+04
Ixy: 1.20091e+04 Iyy: 1.68677e+04
Ixz: -5.36519e+03 Iyz: 2.71228e+04 Izz: 6.45111e+04

Principal MMOI and Principal Axes Relative to WCS Origin:

Max Prin Mid Prin Min Prin
7.69320e+04 7.67603e+04 2.19831e+03

WCS X: 9.00332e-01 -3.96709e-01 -1.78952e-01
WCS Y: 3.15416e-01 3.11489e-01 8.96375e-01
WCS Z: 2.99859e-01 8.63479e-01 -4.05572e-01

Center of Mass Location Relative to WCS Origin:
(-4.98171e+01, 2.45026e+02, -1.12326e+02)

Mass Moments of Inertia about the Center of Mass:

Ixx: 1.93821e+03
Ixy: -1.83677e+02 Iyy: 1.78579e+03
Ixz: 2.24290e+02 Iyz: -3.69142e+02 Izz: 2.06165e+03

Principal MMOI and Principal Axes Relative to COM:

Max Prin Mid Prin Min Prin
2.47386e+03 1.78388e+03 1.52791e+03

WCS X: 4.75163e-01 8.76660e-01 7.54127e-02
WCS Y: -5.11098e-01 2.05223e-01 8.34663e-01
WCS Z: 7.16239e-01 -4.35144e-01 5.45574e-01

Constraint Set: thermal: xxxxx

Load Set: m55c: xxxxx

Resultant Load on Model:
in global X direction: -0.000000e+00
in global Y direction: -0.000000e+00
in global Z direction: -0.000000e+00

Measures:

max_beam_bending: 0.000000e+00
max_beam_tensile: 0.000000e+00
max_beam_torsion: 0.000000e+00
max_beam_total: 0.000000e+00
max_disp_mag: 0.000000e+00
max_disp_x: 0.000000e+00
max_disp_y: 0.000000e+00
max_disp_z: 0.000000e+00
max_prin_mag: 0.000000e+00
max_rot_mag: 0.000000e+00
max_rot_x: 0.000000e+00
max_rot_y: 0.000000e+00
max_rot_z: 0.000000e+00
max_stress_prin: 0.000000e+00
max_stress_vm: 0.000000e+00
max_stress_xx: 0.000000e+00
max_stress_xy: 0.000000e+00
max_stress_xz: 0.000000e+00
max_stress_yy: 0.000000e+00
max_stress_yz: 0.000000e+00
max_stress_zz: 0.000000e+00
min_stress_prin: 0.000000e+00
strain_energy: 0.000000e+00

Analysis "xxxxx" Completed (11:33:59)

------------------------------------------------------------

Memory and Disk Usage:

Machine Type: Windows 7 64 Service Pack 1
RAM Allocation for Solver (megabytes): 4096.0

Total Elapsed Time (seconds): 45.06
Total CPU Time (seconds): 47.64
Maximum Memory Usage (kilobytes): 9282225
Working Directory Disk Usage (kilobytes): 206868

Results Directory Size (kilobytes):
147495 .\..\creo_sim_temp\xxxxx

Maximum Data Base Working File Sizes (kilobytes):
165888 .\..\creo_sim_temp\xxxxx.tmp\kel1.bas
40960 .\..\creo_sim_temp\xxxxx.tmp\oel1.bas

------------------------------------------------------------
Run Completed
Mon Mar 09, 2015 11:33:59
------------------------------------------------------------

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Re: Analysis run not completing - help?

Barry,

The technical specifications for your material they are just.

Best Regards.

Denis.

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Re: Analysis run not completing - help?

Thanks for your feedback - unfortunately I cant post specific details as the information is classified.

However, I am beginning to think that it may be related to the simplified reps I have setup?

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Re: Analysis run not completing - help?

Problem diverted!

Im not too sure if it is a bug or something Ive done?

Basically I had an assembly (1 Housing + 2 Components + 2 Adhesives) with 2 simplified reps. The housing was common to both reps.

I had a succesful run with rep 1, but when trying a run on rep 2 this was where I got the problem?

In the end I got around it by just making a copy of the assembly and having a single rep in each.

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Re: Analysis run not completing - help?

Im not convinced the problem has been answered.

I still dont know why I had the problem, other than its link to simplified reps?

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