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Strength analysis of a cylindrical vessel

Calculation of width of a cylindrical wall from a strength condition

          An applet to construct a system of nomograms for calculating the cylindrical wall thickness [mm] - substitution efforts MPa

         Width cylindrical walls [mm] pays off by formula:

hmin = P f R / (c st),                                                  [1]

where

P the maximum working pressure, kgs/mm2 [MPas];

f assurance coefficient;

R interior radius of a shell, mm;

c weld seam strength factor (usually c=0,85);

st yield strength of a material of a shell, kgs/mm2 [MPas].

         After starting the applet auxiliary window ( "entry window") will be as follows (Figure 1).

                            Figure 1. Additional applet window to build a system of nomograms to calculate changes in the design temperature

         In the input box already shows the layout of nomograms, but it requires re-entry, so each small square denoting nomogram "clicks" on the right mouse button and the left button "click" on the spot where you want the color box (the location of the value of the parameter Z nomogram). You can choose any other place of the variable parameter Z. location After reappointment scheme nomograms "click" with the left mouse button on the icon "[-]", located in the upper left corner of the nomograms scheme. It will change your view of the "[+]". This means that the circuit is secured nomograms.

 Figure 2. Additional applet window on the construction of nomograms system tuned circuit nomograms

          After fixing the nomograms scheme, consistently "click" on each icon indicating the nomogram, and press the three buttons "in memory", "Substitution of ID", "Total formula" to make all the nomogram parameters in memory and forming calculation formula.

          Go to the main window and enter the values of the steps along the axes "X" and "Y". Click on the "Build for ID."

       Figure 3. Main applet window for constructing nomograms system.

          More detailed instructions for the applet.

          An applet to construct a system of nomograms for calculating the cylindrical wall thickness [mm] - substitution efforts MPa





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