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  • Users: cbrn
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  1. cbrn

    calculation of a radial bearing whose fluid medium is pressurized?

    Hi, I've got a runner-in-housing assembly which behaves kind like a radial bearing, whose fluid medium is water. The fact is that this water is pressurized, i.e. the average pressure inside the "bearing" at rest is not zero. Does this pressure have an influence on the static behavior of the...
  2. cbrn

    water-film bearing with "precompressed" water ?

    Hi, I've got a runner-in-housing assembly which behaves kind like a bearing, whose fluid medium is water. The fact is that this water is pressurized, i.e. the average pressure inside the "bearing" at rest is not zero. Does this pressure have an influence on the static behavior of the bearing...
  3. cbrn

    "External Connection" Ansys12.1 - Excel for managing parameters ?

    Hi, emphasized among the new features of v12.1, there is the "External Connection" capability based upon xml scripts in order to interface "non-Ansys" applications with Workbench. I'm particularly interested in managing the Parameters of a simulation in Workbench 2 (v.12.1) with Excel, passing...
  4. cbrn

    Merker's theory for tilting-pads bearings?

    Hi, does anybody know any good source of complete explanation of the Merker's theory for tilting-pads bearings? Thanks in advance, Regards
  5. cbrn

    Merker's theory for tilting-pads bearings?

    Hi, does anybody know any good source of complete explanation of the Merker's theory for tilting-pads bearings? And about Goldshmidt's definition of the clearance ratio? Thanks in advance, Regards
  6. cbrn

    Merker's theory for tilting-pads bearings?

    Hi, does anybody know any good source of complete explanation of the Merker's theory for tilting-pads bearings? And about Goldshmidt's definition of the clearance ratio? Thanks in advance, Regards
  7. cbrn

    Safety margins for torsional eigenfrequencies of big shaftlines?

    Hi, can anybody tell me if there are International Norms which prescribe safety margins as regards torsional eigenfrequencies of big shaftlines, wrt exciting frequencies ? To make myself clearer: does any Norm specify something like "torsional eigenfrequencies must differ of at least xx% from...
  8. cbrn

    Elasticity module of some constructional steels ???

    Hi all, I really hope you can help me on this particular problem: I'm having hard times on getting the elasticity modules "E" of some steels: * S355J0, at 20°C * 30CrNiMo8, at 20° In fact, the calculations I've got to perform are a bit susceptible on this value of "E", but I can't manage to...
  9. cbrn

    Confusion about Norm specifications...

    Hi, I'm facing a bit of confusion about two European Norms regarding constructional steels: - EN 10025-2: regards laminated products. Which is the currently released version of this Norm? The steel S355J2G3 seems to have been retired from the 10025: is it really so? Which is NOW the correct...
  10. cbrn

    fracture toughness Kc of martensitic stainless steel X5CrNi13-4

    Hi, excuse me if this question has already been asked, I'm looking for the fracture toughness "Kc" of the martensitic stainless steel X5CrNi13-4 (forged), possibly for several different field types (e.g. "center cracked plate in tension", "single-edge crack in tension", and so on). Any good...
  11. cbrn

    3D rotodynamics with Gyroscopic effect

    Hi, I'm getting a bit confused on the subject if ANSYS v.11 computes or not the gyroscopic matrix with 3D structural elements such as SOLID186. In fact, it's claimed as a major enhancement, and said in the Advanced Analysis Guide, that the Stationary Reference Frame calculations with...
  12. cbrn

    misconvergence with constant force convergence value?

    Hi, I'm facing a non-convergence with a strange characteristic: after some equilibrium iterations, the Force Convergence Value tends to a constant value, higher than the Criterion of course. The Workbench model is cyclically-symmetric, the cyclicity is enforced via CPCYC. It also contains...
  13. cbrn

    Problem with CAD Integration: UG NX4

    Hi, the company is shifting from Unigraphics NX2 to NX4 and so the CAD Integration plugins of ANSYS v.11 must be shifted as well. We are running into a problem: the plugin / converter seems to install correctly, in fact in Ansys Classical we are able to open any NX4 model. But in Workbench, the...
  14. cbrn

    "Simplifying" elements in Workbench

    Hi, in a thread of some time ago, we were trying to "simplify" or "change" element types in Workbench in order to reduce model occupancy in memory. The concept is good, but my own suggestion about how to do it was unappliable: - SOLID186, and its parabolic counterpart SOLID187, are already...
  15. cbrn

    Failed "match control" in WB - any tips?

    Hi, I sometimes have a problem in WB v.11 with the "Match Control" in order to have the mesh pattern be identical on two faces which are the "low-" and "high-edge" of a cyclic sector. Let's consider that the two faces respect the two main conditions for cyclic-symmetry: - they are topologically...
  16. cbrn

    problems with v.11 download from Customer Portal

    Hi, for those of you who already use v.11, did you download it from ANSYS Customer Portal? Did it give you any error / problem? In fact, I downloaded it twice and both times I ended up with the install stopping when it can't find a file somewhere in \program files\ANSYS...
  17. cbrn

    kinematic data transfer from UG to Excel

    Hi, I hope someone could give some advice on this matter: Object: I've got a UG NX2 model of a kinematic chain. It's parametric. It represents a servo acting, through a cascade of levers, on a rotating device. This kinematic chain must be analyzed in Excel. Problem: Supposed that the driving...
  18. cbrn

    limitation in number of listed results???

    Hi, I'm facing a problem that seems to me very strange, using ANSYS 10.0 sp1: When I issue a PRNSOL command over a selected set of nodes, it doesn't report the results for ALL of the nodes currently selected but only for the first "few" in the list (precisely, 5030). Note that NLIST correctly...
  19. cbrn

    CAD Connection with Unigraphics NX2

    Hi, I'm experiencing problems with the CAD Connection between Ansys Workbench and Unigraphics NX2. Trouble is that the faces' IDs are never maintained during model update, neither using the "reader" mode, neither using the "plugin" mode, so I loose contacts, loads and restraints every time. I...
  20. cbrn

    ANSYS v10 sp1 GUI continuous crashes

    Hi, I'm facing a very annoying problem with ANSYS (both "Classical" and Workbench) v.10 sp1: the GUIs cause continuous crashes of the entire program during interaction operations, maily picking or dragging cursor over the viewport. The operating system is Win XP-Pro 32-bits SP2. The hardware is...

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