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  1. SteveMcQ

    Corrugated Steel

    I have to model a sea land box for a garage conversion with some of the walls removed. What's the best approach to represent or model the walls in GT Strudl? My initial plans were to just assume them to be a flat plate, which allows the members to be continually connected in the analysis.
  2. SteveMcQ

    Hertz Contact Stress in Pipe Support

    Not sure if an off the shelf saddle is an option. Trying to meet ASME code for a power plant and trying to investigate FEA vs hand calcs to see if there is any conservatism that can be removed to gain a little more margin before changing support type.
  3. SteveMcQ

    Pipe bearing on pad

    Having some troubles with a simple model that I need a second look at. I am not sure if my contacts are screwed up or not but I cannot get anything to contact. I have applied the load many different ways and have many different boundary condition attempts on the pipe ends to maintain some...
  4. SteveMcQ

    Hertz Contact Stress in Pipe Support

    They are emergency loads in a power plant and the loads are the loads, enveloped from a variety of conditions out of my control. A FBD would just the pipe on an HSS frame support with a plate between the pipe and HSS if need be. If a better bearing stress answer cannot be obtained through FEA...
  5. SteveMcQ

    Hertz Contact Stress in Pipe Support

    The result seems to be real and the distribution matches with hand calcs and the peak is just below the surface so I would argue they are accurate. I'm starting to believe that the supporting structure is far more critical than initially believed. It is rigidly supported currently. I may...
  6. SteveMcQ

    Hertz Contact Stress in Pipe Support

    That they were. The problem is with FEA we're getting some high contact stresses that may be real but are struggling to determine how to handle them.
  7. SteveMcQ

    Hertz Contact Stress in Pipe Support

    Right now just looking at a 20" pipe supported with a 10" HSS with a plate in between. Load from the pipe is 140 kips and using the Roark's equations the pipe cannot withstand the bearing load. Was hoping FEA may gleana little more into this using a contact analysis in ANSYS.
  8. SteveMcQ

    Hertz Contact Stress in Pipe Support

    That's where we are at. The Roark's equations blow it outta the water so we went to FEA to see if there may be a chance at removing some conservatism in the Roark's equations but we're seeing high local stresses that may or may not need to be considered.
  9. SteveMcQ

    Hertz Contact Stress in Pipe Support

    I have an FEA model of a generic pipe support problem I face and I am looking to see if anyone has any insight as to how to possibly run calcs by hand? Using Roark's for stress on a hollow cylinder as a line will fail the pipe due to local stress but an FEA model shows a lower stress as the...
  10. SteveMcQ

    31.3 Formulas

    Hello, I have been tasked with doing a quick guesstimate/gut feel check of some piping using provided loads. I have a load table for sustained loads and occasional loads and need to evaluate sustained, occasional, and stress range due to expansion. I am encountering some good tips but I am...

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