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  1. Rishy007

    Calculating stress on a adjuster for a valve

    I am planing to model this as FE but I have not got the software yet. Right now I am trying to calculate the stress on the adjuster and find out if it will be able to withstand the forces acting on it. I am not sure what equation to applt to this inorder to find an accurate stress value
  2. Rishy007

    Calculating stress on a adjuster for a valve

    Next pagehttp://files.engineering.com/getfile.aspx?folder=b50c8e11-384e-4f6d-9503-4617890cd70f&file=Marks_mechanical_engineers_hand_book_1.pdf
  3. Rishy007

    Calculating stress on a adjuster for a valve

    Hi I just uploaded the pages from Mark's Engineers handbookhttp://files.engineering.com/getfile.aspx?folder=9ee4a9f7-7f3e-481d-8e85-2154927aecae&file=Marks_mechanical_engineers_handbook_2.pdf
  4. Rishy007

    Calculating stress on a adjuster for a valve

    Hi Yes I also think that the shear stress is high but when I was testing the adjuster made from brass bar cz121 pb3 there was no cracks but it did have a very small deflection init. But we have recived some adjusters made in china, which they say is made from the same material but seems to be...
  5. Rishy007

    Calculating stress on a adjuster for a valve

    hi I got the equation from Mark's mechanical engineering handbook for flat plates. P is the load applied to the plate but I think this equation only applies if we model it as a flat plate with a hole in it. The proof stress of the material is 250N/mm^2 but the maximum shear stress is 425N/mm^2.
  6. Rishy007

    Calculating stress on a adjuster for a valve

    I have modeled the adjuster as a beam with a hole in the middle and used the formula Sm=k(P/t^2) where k= outside diameter of the spring/inside diameter of the spring I am getting shear stress values of 255.635 N/mm^2 which seems right but I m not sure that this equation can be used and I dont...
  7. Rishy007

    Calculating stress on a adjuster for a valve

    sorry here the attachment of the valve assembleyhttp://files.engineering.com/getfile.aspx?folder=7675e8a1-a458-449a-8440-7ead31b37aca&file=319000254.pdf
  8. Rishy007

    Calculating stress on a adjuster for a valve

    I have attached a copy of the assembly of the valve. The 50 bar pressure enters at the bottom of the valve which forces the plunger to move up and compress the spring. This force then is translated on to the adjuster. The adjuster is screwed into the valve and a cap on top of it but the cap...
  9. Rishy007

    Calculating stress on a adjuster for a valve

    I am currently working on a valve design. The valve reqires a adjuster which is used to hold the spring in the chamber. The adjuster is tightened to increase the load on the spring so the pressure at which the valve open can be altered. However the adjuster is cross shaped with a hole at the...

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