Continue to Site

Eng-Tips is the largest engineering community on the Internet

Intelligent Work Forums for Engineering Professionals

  • Congratulations cowski 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: *

  • Users: JayZ
  • Content: Threads
  • Order by date
  1. JayZ

    B31.3 External Pressure + Thermal Stress Limits?

    Per B31.3 the limits of max. code stress = Sustained Loads+ Displacements Loads & When Sh>SL then, Max. Code Stress = f[1.25(Sh+Sc)-SL] or Sa + SL = f[1.25(Sh + Sc)] What Sa + SL would be if we have external pressure? Algor pipePlus solution for 304 SST (Sc =Sh = 20,000 psi)& f =1 is 25,000...
  2. JayZ

    ASCE 7, Wind Loads

    Colleagues; I have never used this spec. and have a few stpuid questions as follows; A. section 6.4.2 requires to calculate appropriate pressure or force coefficients per provisions of 6.7. B. Section 6.7 says look at Figs 6-3 thru 6-8 for pressure coefficients & table 6-4 thru 6-8 for force...
  3. JayZ

    WIND LOADS ASCE 7

    Where do I find information on ASCE-7 wind loads @ 72 mph requirements for Calofornia? Is there a site on the web with that information? Thank you
  4. JayZ

    NASTRAN- OUTPUT STRESSES

    I have a simple solid plate model with a hole in it, two questions. 1. A tensile load is applied as force on nodes on the 1/2 surface of the hole. The Von Misses stresses are too high (in order of 4-5 times of the calculated Normal Stress)on the plate. What am I doing wrong here? 2. How can...
  5. JayZ

    Universal Joints

    I am doing anlysis on a Gimbal, which is essentially a universal joint. Anyone has a good reference on this subject or has done universal joint analysis? Thanks in advance, Jay
  6. JayZ

    Bolt & Weld Joints Modeling?

    Hi Everyone, I started using Nastran last few months, I am modeling a support structure that has weleded joints and boltede joints. How do I model the bolted joints? I can modle the weld joints knowing the weld dimensions and the weld material, is there any other considerations for modeling a...
  7. JayZ

    Gimbal Analysis?

    What kind of analysis is needed for a Gimbal expansion joint? Anybody has done this or know where I can find information? In my humble openion, I need to find the pressure trust force and apply it to the Gimbal universal joint, does this sound correct? Also the force applied should be applied...
  8. JayZ

    Jacketed Pipe Modeling

    All of the work I do with PipePlus is double cointainment and vacuum jacketed piping. Anyone has done this type of analysis with PipePlus? I always have to input the model using the spread sheet, "manually"! Is there a way of doing this with Supperdraw? Anybody seen a book or paper...
  9. JayZ

    How to apply waterhammer loads in Pipeplus

    I have a pipe specification to include waterhammer loads on a piping system. I am using the Pipeplus package. The loads are given in lbf per sections of the pipe system between two elbows. No time constant is given for the loads. B31.3 doesn't address this to my knowledge, how do I apply the...

Part and Inventory Search