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  • Users: ozzkoz
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  1. ozzkoz

    looking for help w/ heat equation + surface convection

    Hi, I have an application in which I have a semi-infinite solid subjected to surface convection at the x=0 boundary and a time varying fluid temperature. I am familiar with the heat equation (d2Tdx2 = 1/alpha dTdt) and I've been able to solve my problem by discretizing the spatial domain and...
  2. ozzkoz

    split faces and swept mesh

    Hi, I'm hoping someone can help me with what (I think) is a basic meshing question. I have a part that I've split in spaceclaim to take advantage of symmetry/ create a sweepable multibody part using the share topology feature. I'm trying to control the swept mesh and seem to be having some...
  3. ozzkoz

    importing circuit boards

    I am looking for some help getting circuit boards integrated with my pro-E model. A previous engineer has setup an assembly model which utilizes step files of circuit boards generated by a EE using Altium. Within the pro-E assemly we have a wire harndess created using pro/cabling. When we...
  4. ozzkoz

    ultimate strain of SS?

    I've been looking for the ultimate strain for some different materials and having trouble. Particularly 13-8 H1000, MIL-HDBK-5 has a stress strain curve but it only ges up to about 1.2% strain. They also have a "full range" but it shows the same Ramburg-Osgood curve and then at 1.2% strain the...
  5. ozzkoz

    split surface singularities

    I'm having a problem with singularities at the boundary of split surfaces when a portion of the surface has a fixed BC applied to it. As a simple example, if I have cantilevered arm which is supported by a wall over half the arm, I've split the surface in two, and applied a zero displacement in...
  6. ozzkoz

    pro mechanica convergence options

    Does anyone know if there is a way to run a MPA analysis in Pro/Mechanica and have it converge on both local disp/energy index and user defined measures? As far as I can tell I need to pick either the index or my own measures. Ideally I'd like to converge on the local displacement/energy index...
  7. ozzkoz

    linearized stress query

    I'd like to use the linearized stress query function while displaying a fringe plot but in the info tab it is grayed out as an option. Is there something I need to do in order to use it or do I need a more advanced license? The help menu says I'd be able to select two points to define the...
  8. ozzkoz

    weighted lnks in Pro/Mech

    I have a fairly basic question regarding weighted links in pro/mechanica. The way I understand the link is this. I attach a surface (say a cylinder) which is the independant side to a point, which is the dependant side. The point motion is then the average motion of the surface, so if the...
  9. ozzkoz

    mixing MMC and LMB

    I'm looking for a little help with determining the appropriate datum feature simulator sizes when the datum modifier does not match the material condition modifier which appears in the FCF of the datum. If you look at Fig 4-16 in ASME Y14.5-2009 I see that the datum feature material boundary...
  10. ozzkoz

    looking for very basic weld info

    I have a few questions regarding welding and how it is specified on drawings. I've checked a few texts but haven't quit gotten exactly what I'm looking for. First off, fillet and butt welds. Do they always have some filler material which is added or are the pieces just melted together? How...
  11. ozzkoz

    bearing bore positional allignment

    I'm fairly new to using ball bearings and I was hoping for some advice on what I think should be a very common topic but I can't actually find any info on. When I have a simple shaft system with a bearing on each end and mounted in a 2-part housing. There is going to be position of the...
  12. ozzkoz

    camed surface on a cylinder?

    I am tying to create a camed surface cut into the ID of a cylinder. Does anyone have a good method for this? Essentially I want a groove around which has a ramp up to another level.
  13. ozzkoz

    volume regions and elastoplatic analysis

    I'm having trouble getting my analysis to run. I've added volume regions to my FEA model so I can refine my mesh in the area of interest and set up both a linear and nonlinear anlaysis. The linear static analysis runs fine and completes (using the elastoplastic properties). The nonlinear...
  14. ozzkoz

    what does the cyclic sym constranit actaully do?

    I'm having trouble with the cyclic symmetry constraint. I've got an axis symmetric part which I have created a quarter slice of and defined a cylidrical csys with z along the axis of revolution. The model has a cyclic constraint on the two plar faces of the 1/4 slice faces, a constraint which...
  15. ozzkoz

    convergence algorithms

    Hi, I am new to mechanica (previously used cosmos and ansys WB) and admittedly a "project" level engineer with an interest in FEA more so than a pure structural engineer. Anyway, I've been reading through the help files trying to understand the convergence method of mechanica (primarily SPA)...
  16. ozzkoz

    family table assembly and BOM's

    Hi, I have an assembly with multiple configuirations. There are 3 components in it, and the first 2 components are common to both configurations, but the -1 configuation has a different third component than the -2 configuration. I've set up a generic model with a -1 configuration and a -2...
  17. ozzkoz

    Intermixed TP and Profile Callout?

    I have a drawing (not mine) where the part intermixes TP and profile tolerance. For simplicity imagine a part which looks like a V with two circles at the top. A TP callout is used to locate the diameters, and the side of the V is defined as tangent to the diameters, and a basic angle...
  18. ozzkoz

    Bolt Connections ?

    Hi, I am trying to model a threaded cap using FEA. I've set up my loading, set up my mesh so I can do a convergence analysis, etc but am having trouble with the threaded connection. I'm using the built in bolt connection (basically saying that I have a nut and it's threaded section is bolted...
  19. ozzkoz

    High Pressure Fitting Help

    Hi, I am pretty new to tube fittings (and hydraulics in general). We have this box of high pressure tube fittings for a high pressure pump and I need to use them to interface into a piece of hardware I am designing. The fitting has a 9/16 threaded coupling and the tube has a conical shape to...
  20. ozzkoz

    convergence analysis using Cosmos

    Hi, My company uses Cosmos for sructural analysis and I was hoping someone with some experience can help me assess the convergence. I am using the adaptive analysis option, p-element. I find that typically after running an analysis it reaches it's stopping criteria and when I check the...

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