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PrasannaK last won the day on December 8 2019

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  1. Hi Nathan, Yes, the 5 Hz peak will be neglected here. That's why, it is advisable to use finer step size while applying loads and calculating responses for FRF simulation and Random Response analysis. Thank you
  2. Hi, In 2nd image I see: "length < 2.00 length > 2.00" In this case elements with length other than 2 will violate the criteria. You can change the "length >" value and check. Thank you
  3. Hi, Ideally, in simulation the forcing function or PSD should be spread across FRF response frequency. For a broader understanding there can be four cases as follows: 1. The FRF response frequency and PSD frequency matches, then solver will use the same value of PSD. 2. The PSD frequency lies between two FRF response frequency, then solver will use interpolated PSD value. 3. The PSD start frequency is greater than FRF response start frequency, then solver will extrapolate the PSD values which might lead to negative PSD value and hence solver will terminate the run. 4. The PSD end frequency is lesser than FRF response end frequency, then solver will extrapolate the PSD values which might lead to an exponential increase in the PSD value will in turn increases the response exponentially. Hence try to avoid (3) and (4). Thank you
  4. Hi, Can you share the screenshot of same? I hope you have selected the components before clicking apply button. Thank you
  5. Hi, Attaching the tutorial pdf- Free Shape Optimization for your reference. Thank you FreeShape_Optimization_tutorial.pdf
  6. Hi, You can refer to the following post which will be helpful: Thank You
  7. Hi, Attached is the tutorial for Design of a Steering Wheel. Thank you Tutorial_steering_wheel.pdf
  8. Hi Nikhil, Kindly find the attached pdf (tutorial) on hex mesh for your reference. Thank You Tutorial_steeringwheel_hexa.pdf
  9. Hi Daniil, You can generate tetramesh from the pre-existing trias (2D mesh) as follows: Click on 3D > Tetramesh > Fixed trias/quads to tetra mesh "elems" > select the elements "all". Thank you
  10. Hi, Kindly refer the following tutorial link for thermal analysis: https://altairuniversity.com/learning-library/tutorial-thermal-analysis-heat-transfer/. For more information on Thermal Analysis you can also refer to the free e-book "Learn Thermal Analysis with Altair OptiStruct" here: https://altairuniversity.com/free-ebook-thermal-analysis-with-optistruct/ . Thank you
  11. Hi, From menu bar, click Tools > Mass Details and select "Mass, Cog and Inertia". Click on Cog to get Cog of components. To get the COG of set of elements, you can mover those elements to new component and check for COG (as mentioned above). For moving the elements to new component: Tools > Organize.. For COG: Tools > Mass details > mass, cog and inertia Click on "Cog". Thank you
  12. Hi, Kindly make sure after downloading the license file, rename it to altair_lic.dat and place the same in the <installation directory>/security folder. Crosscheck the name of the file; it should be "Altair_lic.dat" and not "Altair_lic.dat.dat". Also make sure the Ethernet id for which the software has been requested is correct. If not, then request for another license file for correct Ethernet id here: https://studentedition.altair.com/ The node limitation for OptiStruct is 100,000 nodes for Student Edition. You can more information here: https://altairuniversity.com/altair-student-edition-limitations/ Thank you
  13. Hi Enriqueng, Kindly check if the load application is appropriate and rerun the analysis. Can you share the model file which you are using for analysis ? Thank you
  14. Hi, It is possible for shell elements to get symmetric nodes on opposite surfaces using imprint option. It imprints, connects and optionally remeshes source 1D/2D elements onto target 2D elements. Thank you
  15. Hi, Kindly find the similar post attached for your reference: Thank you
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