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  • Users: suslu13
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  1. suslu13

    Help me about the loads on door mechanism?

    Hi all Basicly i have to make a structural analysis on access panel. As you can see in the image ı have two support location and one actuator holding the door. On the other hand, pressure acts on the wall. I only have hinge moment value for mechanism. If you have any example please share with...
  2. suslu13

    Use subseq with defined subcase ids

    Hi all In the case below, i would like to combine subcase 90 and subcase 100 in a subcom. I wrote like in the below however nastran does not understand. Could you please help me how to combine the loadcase with their ids. 1.5 * subcase 90 + 1.0* subcase 100 Regards SUBCASE 90 LABEL=...
  3. suslu13

    Longeron splice connection

    Hi all I have a longeron which is going to splitted and joined together with bolts like in the picture below. i extracted the forces from gfem model. I have Fx, Fy, Fz and Mx, My, Mz. My question is , how should i distrubute forces on bolts? I think the forces along x direction acting as...
  4. suslu13

    How to convert combined cases to unit cases

    Hi all I have some unit load cases, then with some coefficient i convert it to the combined load cases. I apply this forces to the constant mpc points. Is there any way to convert combined cases to a unit load cases. If i export applied forces from mpc with using Hypermesh, will i get the...
  5. suslu13

    Nastran solver creates too much big files

    Hi all I have a job to run. There are a lot of loadcases therefore the results opt file is 80gb. Eventhough i wrote scr=yes Nastran needs 240 gb space. Nastran solves the job 2 hours in HPC. Is there any way to reduce the space for solving the issue? What are the recommendations for solving...
  6. suslu13

    mat9 card properties for honeycomb solidcore

    Hi all I have a honeycomb material properties. I am using CHEXA solid elements Et=3.5 Mpa Ec=3.5 Mpa Gw=3.9 Mpa Gl= 8.5 Mpa . I do not have poisson ratio. Is it possible to generate mat9 card from these properties? I saw some equations like below in Nastran quick reference guide...
  7. suslu13

    Nastran default solver

    Hi all Which solver type Nastran default use? Spars or iterative. How can i switch the other one? Regards
  8. suslu13

    defining transverse frames cross sections.

    Hi all I would like to ask a question about definening airframe section. The first thing is obtaining the Free body forces frem global FEM with defined elements and nodes setsor section cut. Then define the cross section( j, i beam, z , channel)and calculate geometric properties. ( ıf its...
  9. suslu13

    submerged(underwater) propeller natural frequency simulation

    Hİ all I am using ANSYS. I can get the eigenvalues ( natural frequencies) of propeller in the air. I dont know how to do a submerged analysis. If you have any tutorial or project, could you please share with me? Should i use modal,modal acoustic or harmonic? Best Regards Seckin
  10. suslu13

    submerged (underwater, subsea) propeller natural frequency

    Hİ all I am using ANSYS. I can get the eigenvalues ( natural frequencies) of propeller in the air. I dont know how to do a submerged analysis. If you have any tutorial or project, could you please share with me? Should i use modal,modal acoustic or harmonic? Best Regards Seckin

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