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Recent content by celemin

  1. celemin

    Laminate post process

    Hi Irwin, When l use NASTRAN with laminates l get the forces and moments for the elements where l want to check. NASTRAN gives you directly N/m for the forces and N.m/m for the moments. These values corresponds to the forces and moments of the laminate. In order to check the lamina you can...
  2. celemin

    USE OF BRASS IN SPACE APPLICATION

    Hello, I am facing now a doubt when selecting a material for an space equipment: Is it allowed the use of BRASS in space application? Could be any problem of outgassing with the pressence of zinc in the brass? Thank you and best regards, Esteban
  3. celemin

    USE OF SOLITHANE

    Hello, We usually use solithane as a way of ensure the fixation of bolts and nuts of space equipment during vibration test. My question is the use of solithane on the thread of the bolts and nuts is compulsary necessary when a self-locking nut is used. Thank you very much and best regards...
  4. celemin

    TITANIUM BOLT TORQUE

    Thank you CoryPad, But l wonder if there is another way to know the running torque applicable fopr and Titanium bolt M*6, and not by testing. Thank you very much and best regards, Esteban
  5. celemin

    TITANIUM BOLT TORQUE

    Hello, I am going to use titanium bolts to assemble two parts of an space equipment and l have the next doubt when l use self-locking nut: If the applicable torque for the bolt is 11 N.m for M6 metric, should l increase this torque in order to take into account the running torque from...
  6. celemin

    BUYING TITANIUM BOLTS

    Hello, I am trying to buy Titanium bolts for space applications and l always find supplier with "delivery times" around 24 weeks which disturbes our projects. Are there anyone that can give me some suppliers of titanium botls for space applications. In addition, l have a doubt when...
  7. celemin

    FEM: Meshing with triangles a plate (thin shell)

    Hello, When the mesh of any part is done using plates (thin shell), is there any problem of meshing the plates using triangles? I have done some calculations getting higher Von Mises stress when the mesh is done with triangles than if it is done using squares? I would like to know if the Von...
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