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  1. vladimir79

    Water Pressure, spacial model

    Hi Joe, thank you for the answer. However, I won't be able to test it before 16th September. I'm in vacation. Vladimir
  2. vladimir79

    Water Pressure, spacial model

    Hi Rob, the pipes are close, not glued. For the load case water pressure, the close-fit matter is not really imprortant. The host pipe is cracked, so the water finds the way in. Vladimir
  3. vladimir79

    Water Pressure, spacial model

    Hello world, I'm new in the Femap and Nastran modeling. Following problem occupies my mind for several days now: An artificial pipe (liner) is inserted in another (host) pipe in order to sanate it. For starters, the load case Water Pressure (outer) dictates my wall thickness. The host pipe and...
  4. vladimir79

    Stress on Buried HDPE Pipe

    Hi kmccab1990, dicksewerrat and stanier are pointing in the right direction. The most helpfull standard for the US is the M45 from AWWA. There is also a company which makes software for the structural calculation of burried pipes: [url=http://ingsoft.de/easypipe_en.ingsoft]
  5. vladimir79

    2-D water pressure

    Dear colleagues, I have a plane strai problem that does not converge: The model is a artificial material pipe (liner) which is inserted in another (host) pipe in order to sanate it. The host pipe and the liner are close fit, so I modeled the connection with the gap elements with insignificant...

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