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  • Users: gfbotha
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  1. gfbotha

    Tower Anchor Bolts with Leveling Nuts below the Base Plate

    Thread507-42018 has reference. The practice of having a (tower) base plate resting on levelling nuts, and more than often, also without filling up below with grout, keeps bugging me... As pointed out in the referenced thread, one could take measures, and even do maintenance, to protect the...
  2. gfbotha

    Model edge lines on (deformed) contour plot

    Hallo all Does any one perhaps know how to show the edge lines of a 3D model on a stress contour plot? (also in case of a deformed model/geometry). I am only aware of the Filled Edges setting; but, it plots lines representative of all element edges (not only for edges lying on the model...
  3. gfbotha

    Nastran FX: any comments/experience?

    Any comments/experience on how Nastran FX shapes up against other mid-range (design) software like Cosmos DesignStar or NEi Fusion? Capabilities we are interested in include regular type of non-linear and dynamic functionality. Will try it out if it makes our short list. Have seen the...
  4. gfbotha

    How to cut budgets fairly?

    Feeling a bit revolted right now… How do other companies handle budgeting cycles, or more specific, cutting them down to the required size? Here is how it works here: Prepare budget, get/estimate costs, and load on ERP system. Even submit motivations for any significant increases. Some guys...
  5. gfbotha

    Protective finish for Maraging Steel

    Hallo We currently use a steam induced spinelling (SHS) process to provide a critical, highly stressed maraging steel welded assembly, with limited corrosion protection and also a nice black surface finish. Most, but not all, of the surfaces get painted after all manufacturing processes are...
  6. gfbotha

    Min. angle for axisymmetric with bricks

    Hallo Using 3D tetrahedral elements, with what minimum wedge or sector (included) angle would you, generally speaking, still feel comfortable to analyse an axisymmetric problem? 15°? I realise it depends…, and might vary; but surely there must be some rule of thumb to generally deliver robust...
  7. gfbotha

    Brazing in aerospace application

    We are considering attaching a large number of relative small (steel?) lugs onto a highly stressed thin walled marage steel tube using a brazing process (Ag, Cu, …. brazing fillers). It is a critical aerospace application and we are concerned about possible corrosion/embrittlement problems. We...
  8. gfbotha

    Detergents and SCC/embrittlement

    For health & environmental reasons we are considering using water based specialised detergents to degrease high strength aerospace materials like aluminium 7075 & marage steel used for critical applications. We are concerned about the detergents possibly causing SCC and/or embrittlement. The...
  9. gfbotha

    Slow Down

    Thought I must share the following with you (received via email): ________________________________________________________ An interesting reflection: Slow Down Culture It's been 18 years since I joined Volvo, a Swedish company. Working for them has proven to be an interesting experience. Any...
  10. gfbotha

    Any experience re. Aras PLM software?

    Hallo everybody Any experiences or knowledge to share about the Aras Innovator PLM software? They recently went open source with the software “free” to use (as I understand one only pays for support). How would it compare with say UGS Teamcenter? Did anyone experience their support during...
  11. gfbotha

    STEP translation and density

    Hi SEdgers We have to supply a STEP translation to another company (using Pro-E) - the assembly contains a lot of parts with different densities. In our type of business mass is quite important but we cannot get the STEP file to carry over the density values. I have been under the impression...
  12. gfbotha

    Effective length of circular specimen

    Hallo everybody Sometimes a circular tensile specimen is used in the case of relatively thin-walled tubular products, where one need to determine mechanical properties in the hoop direction. Two internal semi-circular jaws are used in the tensile test machine. Aparently one test standard...

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