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Finding Modes of a Cantilever Beam in NX 7.0<br />Dr. Singh<br />
Starting NX 7.0<br />Start>EAS Applications>Engineering Apps>NX 7.0.<br />
New Model<br />New>Model.<br />Change Units to Inches.<br />New File Name>Name>’Beam.prt’ and Folder to your M-drive.<br /...
Sketching Geometry<br />Select the Sketch icon.<br />Select Planar Face as the X-Z axis> OK.<br />Green arrows should appe...
Sketching Geometry<br />Select the Rectangle tool.<br />Sketch a rectangle at the origin with width= 3” and height= .25”.<...
Extruding<br />Click the Finish Sketch icon.<br />Click the Extrude icon.<br />Select Curve>select the sketch.<br />Direct...
Advanced Simulation<br />Start icon>Advanced Simulation.<br />
Advanced Simulation<br />Simulation Navigator>Right-click beam.prt >New FEM and Simulation.<br />When New FEM and Simulati...
Advanced Simulation<br />Change Solution Type to SEMODES 103- Response Simulation.<br />Click OK.<br />
Meshing<br />Under Simulation File View, select beam_fem1 and click 3D Tetrahedral.<br />
Meshing<br />Select Bodies: select the beam.<br />Mesh Parameters>Element Size>Automatic Element Size icon.<br />Click OK....
Material Properties<br />Click on the Material Properties icon.<br />Select the beam and Aluminum_6061.<br />Click OK.<br />
Advanced Simulation<br />Reselect beam_sim1.sim.<br />Under Solution 1, right-click Subcase- Dynamics and select Edit.<br />
Advanced Simulation<br />Under Subcase- Dynamics>Output Request, click the Create Modeling Object icon.<br />
Advanced Simulation<br />Under the Displacement tab, check the box next to Enable DISPLACEMENT Request.<br />Click OK.<br />
Advanced Simulation<br />Under Lanczos Method, click the Create Modeling Object icon.<br />
Advanced Simulation<br />Change the Number of Desired Modes to 10.<br />Click OK.<br />
Click Constraint Type pull-down bar and select Fixed Constraint.<br />Apply this to the left face of the beam.<br />Click ...
Advanced Simulation<br />Right-click Solution 1 and click Solve.<br />When the window appears, click OK.<br />Wait until t...
Advanced Simulation<br />In the Post Processing Navigator, right-click Solution 1 and click Load.<br />Click the plus sign...
Results<br />Mode 1<br />Mode 2<br />Mode 5<br />Click on the plus sign next to each mode to expand.<br />Double click Dis...
Interpreting Results<br />Mode 4<br />Different types of modes can occur- for example, Mode 4 is a torsional mode. <br />S...
Interpreting Results<br />Lateral<br />Torsional<br />Bending<br />If you are having difficulty distinguishing which type ...
Interpreting Results<br />The values of Modes 1, 2, and 5 should approximately be:<br />
Animation<br />To animate results, double-click Displacement-Nodal for any mode and click the Animation icon.<br />Adjust ...
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Finding modes of_a_cantilever_beam_in_nx7

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Finding modes of_a_cantilever_beam_in_nx7

  1. 1. Finding Modes of a Cantilever Beam in NX 7.0<br />Dr. Singh<br />
  2. 2. Starting NX 7.0<br />Start>EAS Applications>Engineering Apps>NX 7.0.<br />
  3. 3. New Model<br />New>Model.<br />Change Units to Inches.<br />New File Name>Name>’Beam.prt’ and Folder to your M-drive.<br />Click OK.<br />
  4. 4. Sketching Geometry<br />Select the Sketch icon.<br />Select Planar Face as the X-Z axis> OK.<br />Green arrows should appear as shown above.<br />
  5. 5. Sketching Geometry<br />Select the Rectangle tool.<br />Sketch a rectangle at the origin with width= 3” and height= .25”.<br />
  6. 6. Extruding<br />Click the Finish Sketch icon.<br />Click the Extrude icon.<br />Select Curve>select the sketch.<br />Direction>Reverse Direction.<br />Limits>End Distance>24 in.<br />Select OK.<br />
  7. 7. Advanced Simulation<br />Start icon>Advanced Simulation.<br />
  8. 8. Advanced Simulation<br />Simulation Navigator>Right-click beam.prt >New FEM and Simulation.<br />When New FEM and Simulation window appears, select OK.<br />
  9. 9. Advanced Simulation<br />Change Solution Type to SEMODES 103- Response Simulation.<br />Click OK.<br />
  10. 10. Meshing<br />Under Simulation File View, select beam_fem1 and click 3D Tetrahedral.<br />
  11. 11. Meshing<br />Select Bodies: select the beam.<br />Mesh Parameters>Element Size>Automatic Element Size icon.<br />Click OK.<br />
  12. 12. Material Properties<br />Click on the Material Properties icon.<br />Select the beam and Aluminum_6061.<br />Click OK.<br />
  13. 13. Advanced Simulation<br />Reselect beam_sim1.sim.<br />Under Solution 1, right-click Subcase- Dynamics and select Edit.<br />
  14. 14. Advanced Simulation<br />Under Subcase- Dynamics>Output Request, click the Create Modeling Object icon.<br />
  15. 15. Advanced Simulation<br />Under the Displacement tab, check the box next to Enable DISPLACEMENT Request.<br />Click OK.<br />
  16. 16. Advanced Simulation<br />Under Lanczos Method, click the Create Modeling Object icon.<br />
  17. 17. Advanced Simulation<br />Change the Number of Desired Modes to 10.<br />Click OK.<br />
  18. 18. Click Constraint Type pull-down bar and select Fixed Constraint.<br />Apply this to the left face of the beam.<br />Click OK.<br />
  19. 19. Advanced Simulation<br />Right-click Solution 1 and click Solve.<br />When the window appears, click OK.<br />Wait until the Analysis Job Monitor lists the solution as ‘Completed’.<br />
  20. 20. Advanced Simulation<br />In the Post Processing Navigator, right-click Solution 1 and click Load.<br />Click the plus sign to expand the solution.<br />
  21. 21. Results<br />Mode 1<br />Mode 2<br />Mode 5<br />Click on the plus sign next to each mode to expand.<br />Double click Displacement- Nodal to view displacement results.<br />
  22. 22. Interpreting Results<br />Mode 4<br />Different types of modes can occur- for example, Mode 4 is a torsional mode. <br />Since we are only interested in bending modes, our first three modes will be Mode 1, Mode 2, and Mode 5.<br />
  23. 23. Interpreting Results<br />Lateral<br />Torsional<br />Bending<br />If you are having difficulty distinguishing which type of mode is occurring, try rotating the beam to view from the constrained end. <br />Bending modes will displace up and down, lateral from side to side, and torsional in a twisting motion.<br />
  24. 24. Interpreting Results<br />The values of Modes 1, 2, and 5 should approximately be:<br />
  25. 25. Animation<br />To animate results, double-click Displacement-Nodal for any mode and click the Animation icon.<br />Adjust Synchronized frame delay and Number of frames. <br />Check the box next to Full-cycle to see the full modal cycle.<br />Click the Next Mode/Iteration icon to see the next mode.<br />

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