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luongo1

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  1. Hi, I ran the optimization solver using optistruct with basic point loads as a test. However when i apply the display von mises stress on simple averaging method, there is nothing. It seems to be running fine with no errors so I don't understand whats happening. see picture attached output file spit out this: 1 MaxDisp 1240140 0.00000 0 1 MaxStress 0 0.00000 0 2 MaxDisp 60 0.282330E-01 0 2 MaxStress 31836 -496.786 0 3 MaxDisp 3886 -0.411211 0 3 MaxStress 32798 3767.72 0 4 MaxDisp 65 -0.137933 0 4 MaxStress 12682 1697.60 0 5 MaxDisp 65 0.00000 0 5 MaxStress 12682 0.00000 0 6 MaxDisp 63 -0.815247E-01 0 6 MaxStress 12682 754.470
  2. so since Hyperworks works in N,mm,MPa, do i consider N*mm as units for moment load?
  3. OPTIMIZATION PROBLEM PARAMETERS : --------------------------------- Objective Function : Minimize Weighted Compliance ------------------ Response Summary : ------------------ Number of volume fraction responses : 1 Number of compliance responses : 1 Number of equation responses : 1 ------------------------ Static Subcase Summary : ------------------------ ---------- -------- -------- -------------- Subcase ID SPC ID LOAD ID Weight = w(i) ---------- -------- -------- -------------- 1 1 2 1.000 ---------- -------- -------- -------------- --------------------------- Design Parameters Summary : --------------------------- Total # of topology design elements : 3098 Total # of topology cards : 1 Total Volume of Design Material : 2.1107E+02 Total Mass of Design Material : 5.6988E-04 Volume of Non-Design Material : 0.0000E+00 Mass of Non-Design Material : 0.0000E+00 Solid Design Elements : PSOLID --------------------- -------- 1 --------------------------------- Optimization Parameters Summary : --------------------------------- Initial Material Fraction [0,1] : 0.5100 Minimum Element Volume Fraction : 0.0100 Discreteness Parameter : 1.0000 Topology Optimization Method : Density Method Maximum Number of Iterations : 30 Convergence Tolerance : 5.0000E-03 Step Size (Topology) : 0.5000 Checkerboard Control : On (1 - Global Averaging) Run Type : Topology Optimization ------------------------------- Topology Optimization Summary : ------------------------------- -------- ----------- ----------- ----------- DTPL ID Minimum Maximum Minimum Member Size Member Size Gap Size -------- ----------- ----------- ----------- 1 -------- ----------- ----------- ----------- -------- ------- ------- ----------- ----------- ----------- ----------- DTPL ID Pattern Pattern Draw Dir. Stamping No Hole Extrusion Repet. Group. Constraints Constraints Constraints Constraints -------- ------- ------- ----------- ----------- ----------- ----------- 1 NONE NONE NONE NONE NONE NONE -------- ------- ------- ----------- ----------- ----------- ----------- Restart from previous solution : No Scratch file directory : ./ Free space: 340.359 GB Number of CPU processors : 1 ************************************************************************ ************************************************************************ MEMORY ESTIMATION INFORMATION : ------------------------------- Solver Type is: Sparse-Matrix Solver Direct Method Current Memory (RAM) : 100 MB In addition a ramdisk area was allocated in memory : 200 MB Estimated Minimum Memory (RAM) for Out of Core Solution : 6 MB Recommended Memory (RAM) for Out of Core Solution : 6 MB Recommended Memory (RAM) for In-Core Solution : 7 MB (Note: The Minimum Memory Requirement is limited by Sensitivity Module.) DISK SPACE ESTIMATION INFORMATION : ----------------------------------- Estimated Disk Space for Output Data Files : 6 MB Estimated Scratch Disk Space for In-Core Solution : 5 MB Estimated Scratch Disk Space for Out of Core Solution : 8 MB ************************************************************************ BEGINNING OPTIMIZATION SOLUTION .... ************************************************************************ OPTIMIZATION HISTORY INFORMATION : ---------------------------------- ITERATION 0 Element # 2354, element type TETRA. WARNING - Outside of recommended range: Face Skew Angle = 75.270 upper limit = 75.000 WARNING - Outside of recommended range: Face Vertex Angle = 7.5045 lower limit = 15.000 WARNING - Outside of recommended range: Edge Angle = 80.092 upper limit = 75.000 Element # 2376, element type TETRA. WARNING - Outside of recommended range: Face Vertex Angle = 13.291 lower limit = 15.000 WARNING - Outside of recommended range: Edge Angle = 75.141 upper limit = 75.000 Element # 2399, element type TETRA. WARNING - Outside of recommended range: Face Skew Angle = 75.270 upper limit = 75.000 WARNING - Outside of recommended range: Face Vertex Angle = 7.5045 lower limit = 15.000 WARNING - Outside of recommended range: Edge Angle = 80.740 upper limit = 75.000 NOTE : other similar error/warning messages were suppressed, use PARAM,CHECKEL,FULL to obtain full report Element # 2503, element type TETRA. WARNING - Outside of recommended range: Face Skew Angle = 80.714 upper limit = 75.000 Element # 3764, element type TETRA. WARNING - Outside of recommended range: Aspect Ratio = 819.11 upper limit = 100.00 ERROR - Acceptable range violation: Face Aspect Ratio = 729.39 upper limit = 500.00 ERROR - Acceptable range violation: Face Skew Angle = 89.851 upper limit = 85.000 ERROR - Acceptable range violation: Face Vertex Angle = 0.74365E-01 lower limit = 3.0000 ERROR - Acceptable range violation: Edge Angle = 89.403 upper limit = 87.000 Element # 3878, element type TETRA. ERROR - Acceptable range violation: Edge Angle = 87.104 upper limit = 87.000 Element # 4179, element type TETRA. ERROR - Acceptable range violation: Face Skew Angle = 86.790 upper limit = 85.000 ERROR - Acceptable range violation: Face Vertex Angle = 1.6382 lower limit = 3.0000 ERROR - Acceptable range violation: Edge Angle = 88.078 upper limit = 87.000 Element # 4245, element type TETRA. WARNING - Outside of recommended range: Aspect Ratio = 781.06 upper limit = 100.00 ERROR - Acceptable range violation: Face Aspect Ratio = 729.39 upper limit = 500.00 ERROR - Acceptable range violation: Face Skew Angle = 89.851 upper limit = 85.000 ERROR - Acceptable range violation: Face Vertex Angle = 0.74365E-01 lower limit = 3.0000 Element # 4435, element type TETRA. WARNING - Outside of recommended range: Face Aspect Ratio = 61.537 upper limit = 50.000 Element # 4875, element type TETRA. WARNING - Outside of recommended range: Face Aspect Ratio = 53.548 upper limit = 50.000 Element # 4911, element type TETRA. WARNING - Outside of recommended range: Face Aspect Ratio = 84.289 upper limit = 50.000 Element # 5261, element type TETRA. WARNING - Outside of recommended range: Aspect Ratio = 104.03 upper limit = 100.00 *** ERROR # 2203 *** Error(s) encountered during element check ***** Element Quality Check Failed - error limits violation ***** NOTE : To bypass element quality checks (except essential validity checks) use PARAM,CHECKEL,NO. This may, however, cause very poor results. Element Quality Check Summary ----------------------------- Total # of elements that exceeded acceptable range (error) = 22 Total # of elements that exceeded recommended range (warning) = 189 Acceptable range violations: ------------------------------------------------------------------------------ Element Property # of Acceptable Range Max. Viol. Elem. Viol. Lower Upper Value type No. ------- ------------------- -------- --------- --------- --------- --- ------- TETRA Face Skew Angle 20 -- 85.00 89.85 U 3764 TETRA Edge Angle 19 -- 87.00 89.75 U 5431 TETRA Face Vertex Angle 21 3.00 177.00 0.07 L 4245 TETRA Face Aspect Ratio 2 -- 500.00 729.39 U 3764 Recommended range violations: ------------------------------------------------------------------------------ Element Property # of Recommended Range Max. Viol. Elem. Viol. Lower Upper Value type No. ------- ------------------- -------- --------- --------- --------- --- ------- TETRA TETRA Aspect Ratio 7 -- 100.00 819.11 U 3764 TETRA Face Skew Angle 38 -- 75.00 84.49 U 4402 TETRA Edge Angle 103 -- 75.00 86.82 U 5036 TETRA Face Vertex Angle 172 15.00 165.00 3.35 L 4363 TETRA Face Aspect Ratio 12 -- 50.00 117.47 U 5360 *** PROGRAM STOPPED: ERRORS DURING ELEMENT QUALITY CHECK.
  4. The amount of memory allocated for the run is 300 MB. This run will use in-core processing in the solver. Element # 3878, element type TETRA. *** PROGRAM STOPPED: ERRORS DURING ELEMENT QUALITY CHECK. ************************************************************************ A fatal error has occurred during computations: *** PROGRAM STOPPED: ERRORS DURING ELEMENT QUALITY CHECK.
  5. Hi, I can't seem to run the Optistruct solver because it cannot run element cleanup. I am new to Hyperworks application and do not know what is wrong with the particular element. Thanks for the help.
  6. Nevermind, I figured it out
  7. *** See next message about line 4461 from file: C:/Users/Nathan/Documents/formula solidworks/uprights/uprights1.fem "FORCE 2 0 01.0 0.0 3.924 0.0" *** ERROR # 1000 *** in the input data: Incorrect data in field # 3. This is a moment force I created So I thought this error was referring to the card entry S1, but that was fine. What is entry #3 and how do i edit forces.
  8. using 13.0 Optistruct,doesn't appear to be a find tool. Thanks KUWill
  9. How do I locate these nodes?
  10. *** ERROR # 2110 *** The dependent d.o.f. is constrained by grid or spc data. RBE2 element id = 715 grid id = 10 component = 1. After doing some work with optistruct, I encounter this error. The only constrained nodes are the base of my model. How do I locate the RBE2 that is causing problems? Thanks
  11. I have shared the model with you on your drop box
  12. I think the problem is that i'm using basic FEA and hyperworks keeps creating it's own load collectors and referencing those collectors. This happens when I make a load step in basic FEA. If i right click them on card edit, it'll say 'No card assigned to the entity for the current user profile'.
  13. There were 3 error messages during input processing. The first message is repeated below: *** ERROR # 720 *** Invalid static SUBCASE that has no load or enforced displacement. subcase id = 1 ************************************************************************ ==== End of solver screen output ==== This error appears when I add a secondary force or constraint onto multiple sections of my model. Any help is appreciated.
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