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  • Users: pagheca
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  1. pagheca

    understanding loop

    Hi everyone, I would like to simulate as a start the throw of two dices and want to check how many times I get a certain value from 0 to 12. I used a while loop (see attachment) but it doesn't work as it never exit the loop. N is the number of throws to try. Y[0,P is a vector, j is an index. Z...
  2. pagheca

    find the element of an array

    Hi, I'm looking for the simplest way to find the index of the element of a vector that is closer to a given value. Suppose the vector is f[i:=i^2 and the value V:40 . The solution is i=6 as 6^2=36. How to find that i value? Do there is any function doing that? Do you know any trick using the...
  3. pagheca

    Zirconia rolling friction coefficient

    Hi, does anyone know the rolling friction coefficient of any commercially available Zirconia ceramic brand. Thanks in advance for any help
  4. pagheca

    large bearing

    Hi, I have to rotate a disk weighting at about 4 kg, at 12 rev/sec, supporting it from the circunference (dia=300mm). I have to dissipate the minimum possible heat (less than a few W) and work at a temperature of ~ -200 C with dry lubrication. The rotation should keep going maintenance free for...
  5. pagheca

    Problems with integral of functions with unit

    I found the following problems with MathCAD 11. I have to numerically integrate a function in the form F(f,k,T)=F(exp(-hf/kT)), where h, f, k and T have their own units. Most of you will have already understood I'm dealing with Planck radiation law, however... I would prefer to keep working...
  6. pagheca

    envelope size

    Hi, How to align reference dimensions to a particular directions? I have a quite irregular assembly (so, I can't use the sketch). I need to show the envelope of the assembly (a concept design) aligned to the 3 main axis. If I use a reference dimension, it will show the direct (shortest)...
  7. pagheca

    Floppy disk drive technology

    Hi, I am looking for information about the floppy disk drive technology (yes, the old one): the way data are encoded on the disk, materials and technology disks and heads are made, friction, wearing, lifetime, signal/noise ratio at head/disk level, circuitry for directly reading the signal...
  8. pagheca

    problem importing DXFs: 3D faces are not imported

    Hi, I have to import in Solidworks some DXF files I generated with another program (GRASP, a software for antenna design). The drawings represents some mirror dishes. When I try to File->Open->DXF I get the following message: __________ '<file name>' is possibly an AutoSolid model. It...
  9. pagheca

    hyperboloids

    Hi, Do anyone knows any way to draw an hyperbole, guys? A parabola or an ellipse is not enough Cheers & thanks in advance. p
  10. pagheca

    combining bodies doesn't work

    Hi, I have a problem with combining bodies. Inside a part, I created a circle and extruded it as a cylinder. Than I created a tilted reference plan through the cylinder. Than I draw a rectangle on this plane and extruded it as usual, obtaining a box. Now, I would like to get the intersection...
  11. pagheca

    Error: Simulation

    Hi, since a while every time I rebuild my drawing a window pop-up and says: Rebuild errors: Simulation: This feature had an error in the last update. Edit definition on the feature to correct the problem. I found no reference to this string on the internet. I have been experimenting with...
  12. pagheca

    sampling rate in x-y plots

    I want to plot a function in an x-y plot. Do you know of any way to set a different sampling rate without assigning functions value in a vectors? The sampling rate of the function is way too low and the curve looks as a polygonal in a critical part of the function. Thanks in advance for any idea
  13. pagheca

    how to fix errors?

    While changing one dimension of a part I got into an error. The problem is that apparently there is no way to go back: if I right click to delete/edit the component, or any other component I can't get anything. Apparently the only way to proceed is to start from scratch, creating cascades of...
  14. pagheca

    how to move features in part drawing?

    Hi, I recently moved from AutoCAD to Solidworks 2004. I'm not an engineer but a scientist and used it only for short periods (= not a systematic knowledge). I already look to the online topic and I'm currently studying a tutorial. I have a very basic question I've not been able to solve that...

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