Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Search results for query: *

  1. Motorhead

    I-Beam Deflection Calculation Problem

    Thank you very much for the insight provided already. I will confess to being ignorant of shear deformation. Must be something not taught in general mechanical engineering curriculum. We have some CE's around here and will consult there library of books for more information. Is there any...
  2. Motorhead

    I-Beam Deflection Calculation Problem

    I don't have the exact numbers with me, but it was a simply supported beam (approx 3 feet in length) with point load applied at mid-span. Load is applied downward on the top part of the flange. The equation used for maximum deflection was ymax = -PL^3/(48EI). Material is A36. I have calc...
  3. Motorhead

    I-Beam Deflection Calculation Problem

    I work at a community college and doing some bending beam experiments for student labs. When doing simply supported beam deflection calculations and measurements, I am seeing some inconsistent data that I cannot explain. If I test a basic cross sectional shape (square, rectangle, tube), I get...
  4. Motorhead

    Request Electrical Power Reference Suggestions

    I am advising a group of college students on the development of a electical motor/combustion engine hybrid vehicle project. We are all very new to this field. I am looking for textbook and resource recommendations to educate ourselves in this technology. As mechanical engineers, I am...
  5. Motorhead

    Mechanical Engineering Web Resources

    I am developing an intranet website for our engineering department and would like to include a section on helpful websites for engineers...things like online calculators, design resources, standards..etc. We are mainly mechanical engineers and do alot of machine design with motion control...
  6. Motorhead

    Mechanical Engineering Web Resources

    I am developing an intranet website for our engineering department and would like to include a section on helpful websites for engineers...things like online calculators, design resources, standards..etc. We are mainly mechanical engineers and do alot of machine design with motion control...
  7. Motorhead

    looking for ergonomic models of seated humans for proe

    Goto this website to download a crude model of a human.<br><br><A HREF="http://www.neprouser.org/Tips-Tricks/tips.htm" TARGET="_new">http://www.neprouser.org/Tips-Tricks/tips.htm</A><br><br>I have no idea if its meets the detail that you need though.&nbsp;&nbsp;PTC also offers a human factors...
  8. Motorhead

    Measuring moment of inertia

    If you have access to the fan blade outside of the assembly, there is an experimental way of determining the moment of Inertia.&nbsp;&nbsp;It is often used to measure the inertia of motor rotor assemblies.&nbsp;&nbsp;In fact the procedure is described nicely in the NEMA standard for...
  9. Motorhead

    Stainless Steel Section Properties

    Try this online source for material properties:<br> <br> <A HREF="http://www.matweb.com/" TARGET="_new">http://www.matweb.com/</A><br> <br>
  10. Motorhead

    what is E for steel?

    The above answers are good ball park numbers. If you have a particular grade of steel, check the following online site for more definite numbers:<br> <br> <A HREF="http://www.matweb.com/" TARGET="_new">http://www.matweb.com/</A><br> <br> They also have many more material properties for...
  11. Motorhead

    Buckling of spheres

    I presently do not have a copy, but I have always consulted a book titled &quot;Roark's Formulas for Stress and Strain&quot; for these types of problems. I do not recall if it covers sphere's, but it is very comprehensive and a great book to have if you do lots of stress/strain calculations...
  12. Motorhead

    Inertia Calculations for Bearings in Rotor Assemblies

    I am doing rotor interia calculations for some rotor assemblies in a brushless DC motor. In the past I have always ignored any effect due to front and rear bearings. I am beginning to question this assumption. Does anyone know if this a valid assumption, and if not, some insight on how to...
  13. Motorhead

    tube analysis

    Not sure what t/r is (tube thickness to tube radius ration?), but here's what I would do:<br> <br> In tension: Stress(s) = Axial Load(P)/Area(A), so if you know your stress level, solve for A. This is the area of the tube and would be equal to 0.25*PI(Do^2-Di^2). You will need to pick the...
  14. Motorhead

    NEMA Motor Frame Sizes

    Does anyone know of some internet resources defining NEMA motor frame sizes (i.e. physical dimensions for bolt patterns, shaft size etc)? Some searching around on general purpose search engines did not prove successful.<br>
  15. Motorhead

    How much ice would I need

    To solve the steady state problem from temperature initial to temp final, you should be able to get a reasonable answer by just doing an energy balance. Check any college physics book for some good examples. Equations will something of the form:<br> <br> heat from water=heat to ice +...
  16. Motorhead

    shareware/freeware conversion programs?

    Here's one I keep on my NT Desktop<br> <br> http://www.joshmadison.com/software/convert/<br> <br> It's free and works very nice<br>
  17. Motorhead

    To Upgrade or Not.....

    I currently have a couple thousand Pro/Engineer models/assembly/dwgs that are version 19.0 or earlier. We have recently upgraded to version 20.0. I am curious how other Pro/E users handle their upgrades with respect to coverting your files to the latest revision. Do you only upgrade the files...
  18. Motorhead

    Looking for fastener slide computer

    I have one that I use on a daily basis (at least when I can my co-worker from taking it!). It is great. Unfortunately I inherited it from a retiring engineer, but here is the info printed on it and maybe they are still in business:<br> <br> Media Marketing Associates<br> 266 Cabot St # 9<br>...
  19. Motorhead

    ProE Software

    Here are some training sources to consider:<br> 1) From PTC directly. They have a series of courses from beginer to super-user. Gnerally you go there (or a local field office) for training. If you have enough people at a work location, it may be more cost efective to bring the trainer to your...
  20. Motorhead

    Choice of Books needed

    A very good general purpose book that I like is "Mechanical Design Handbook" by Harold A. Rothbart, Publisher McGraw-Hill. It cover a wide variety of mechanical concepts and applications. What I like best though is a fair amount of theory is presented so if equations need to be slightly...

Part and Inventory Search

Back
Top