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Recent content by VBHMBG

  1. VBHMBG

    water hammer in self supporting steel pipe

    Dear stanier, I agree with your thoughts concerning the allowable stress values acc. to B31.3 with respect to waterhammer loads. Also the mixing of codes often leads to endless discussions when not clearly approved by owner etc. One question to you: For the modal analysis of the pipng system...
  2. VBHMBG

    Caesar II with Tie-rod Ex-joint

    Dear T5580, By using an expansion joint as shown on page 5-6 of the Caesar II Application Guide you must have a lateral displacement between the two e.j. ends. This means that the e.j. only works in the intended way if there is a bend / change in pipe routing between the nozzle to protect and...
  3. VBHMBG

    Modal analysis with Caesar II

    TS 5580, The Caesar II manual is containing the explanations of the several settings to be made. Also, hitting the F1 buttton while the cursor placed in the relevant fields will pop up some help text. But before this step a basic understanding is required to interprete the computed eigen...
  4. VBHMBG

    Pipe Forces due to Flow

    Dear meca, Please be aware that it is very difficult to evaluate fluid loads without any knowledge of the plant operating scenarios that cause the flow variations. Typically, the first step would be the definition of various scenarios (opening of valves, starting of pumps etc.) The next step...
  5. VBHMBG

    Supports on elbow in horizontal pos'n

    Be sure to use the correct stress intensification factors for this type of junction. An approximation of the Bend / Trunnion SIFs can be calculated by using the analysis > Sifs@bends option from the Caesar II main menue. More specific data can be calculated using FEA software.
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