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  • Users: kotawsu
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  1. kotawsu

    L structure

    Suppose i have a l-shaped honey comb structure. can i juss model the horizontal panel and verticla panel seperately and then tie the nodes at their intersection.or is there any other guidelines i need to follow. i know that i would have to define local orientation for the panels so that their...
  2. kotawsu

    assembly

    in ne nastran how do i model different parts and then assemble them. like in abaqus u create different parts and then in assembly module u create an instance and assemble the model. is there a way i can follow this method in nastran?
  3. kotawsu

    Deleting property and material

    is it not possible to delete the material and the propert defined in a .NAS file. if yes how do i do it 'cause i am not able to..thanks
  4. kotawsu

    Midsurface modeling

    what is the advantage of juss modeling the top face of a sandwich panel over modeling the midsurface of the panel? any insight. or can a sandiwch panel be idealised by midsurface modeling?
  5. kotawsu

    bolted joint.

    what would happen if all the bolts are rigid in a joint. would all the bolt carry the same load? and what about deflection?
  6. kotawsu

    Boundary conditions

    I have a question regarding the boundary condition for a plate which is simply supported on all four edges. How do i simulate this condition in a FE software. what i mean is what are the d.o.f that i would have to constrain considering each node has 6 d.o.f..Thanks.
  7. kotawsu

    partition

    just like in abaqus is there a partitioning technique available in NE Nastran?
  8. kotawsu

    Honey comb modeling

    Hello everyone, I am new to NE nastran and i want to analyse a honeycomb structure with aluminum facings and a honeycomb core. Could anyone guide me as to how to assign the material properties and is there any example which would be useful. I would really appreciate any kind of help. Thanks...
  9. kotawsu

    HoneyComb structure

    Hello everybody...could anyone brief me about how to model a honeycomb structure? as far as i know multi-point constraints have to be used between the shell facing and the solid core. Is this right? any examples? thanks Sakota
  10. kotawsu

    Meshing question

    I am facing problems to mesh a scarf joint using 2d solid elements. I am using structured technique but near the scarf i am not able to control the mesh. could anybody suggest a meshing technique? thanks.
  11. kotawsu

    composite modeling

    hello, i am using solid elements to model a composite laminate which consists of 18 layer of plies. so does it mean that i just have to create 18 partitions and then assign the material coordinate system according to the fibre orientation and then give the composite properties. my doubt is about...
  12. kotawsu

    Subroutine help

    what exactly does a subroutine do and could anyone tell me how do i start with it? thanks. I am trying to go one level above in Abaqus. Kota
  13. kotawsu

    Shell modeling

    I am new in the area of shell modeling. Suppose i use 3d deformable planar shell and specify the thickness how will i get to know the through thickness stresses. say there r many layers. so i guess in this case i have to go for 3d shell extrusion right? also could anyone tell me the importna...
  14. kotawsu

    equivalent mechanical load

    suppose a bar is subjected to a temperature change. I run a thermal analysis to get the temperature distribution in the bar. Later on i want the equivalent mechanical load tht would stress the bar by the same amount. How could i obtain that load? i know that sigma= alpha*delta T where delta T is...
  15. kotawsu

    autocad drawing

    Hello everybody. I was wondering if it is possible to generate an autocad drawing from abaqus cae. If yes how do i do it? Also is it possible to dimension the 3d model in abaqus? thanks.
  16. kotawsu

    equivalent area of Z-shape beam

    Hello everyone, I am doin a structural analysis of a Z-shape beam bolted to a flat panel. I want to find the equivalent area of the Z-shape beam. I have constrained one end of the aluminum beam in the x-direction and i am pulling the other end of the composite beam in the x-direction. So now i...
  17. kotawsu

    Equivalent area of Z-shape beam

    Hello everyone, I am doin a structural analysis of a Z-shape beam bolted to a flat panel. I want to find the equivalent area of the Z-shape beam. I have constrained one end of the aluminum beam in the x-direction and i am pulling the other end of the composite beam in the x-direction. So now i...
  18. kotawsu

    Finding moment

    hello everybody. I have a force applied to the side of a solid I-beam structure.i have the option of calculating the neutral axis theoritically. but is there a way i can find the neutral axis by using abaqus output? I am using solid elements.if i find a way to caluclate the neutral axis then i...
  19. kotawsu

    Element Area

    Is it possible to plot or obtain the element area in abaqus?
  20. kotawsu

    bolted joint

    hello, can anybody tell me how to look for the clamp force if i simulate a bolted joint in abaqus. right now am looking at the contact force in the transverse direction. is this right?

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