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PavanShetty_0778-Gravel
8-Gravel
January 31, 2023
Solved

Interpolation of 2 variable

  • January 31, 2023
  • 2 replies
  • 1736 views

Hello All,

I have 2 variables; one is pipe material and second one is temperature at 50/100°F increment.

By selecting Material data from drop down list and temperature. It will throw allowable stress value.

 

Is it possible to add interpolation formula if temperature value is other than what is available in the combo box.

For example, for P11 material at 825°F, allowable stress value is 14200psi by using interpolation method.

 

 

 

 

Best answer by terryhendicott

Hi,

One way is like this:

Capture.JPG

2 replies

V
24-Ruby IV
ValeryOchkov24-Ruby IV
24-Ruby IV
January 31, 2023

May be so

ValeryOchkov_0-1675165015111.png

 

    T
    21-Topaz II
    terryhendicott21-Topaz IIAnswer
    21-Topaz II
    January 31, 2023

    Hi,

    One way is like this:

    Capture.JPG

      R
      RantEng14-Alexandrite
      14-Alexandrite
      January 31, 2023

      I use the linterp function to interpolate nonlinear data if it can be linearized in a log-log or semi-log format.

      RantEng_0-1675197291278.png

      I use the above to interpolate torque speed data from a speed/torque table for gearboxes.  It isn't linear but if you plot the table data on a log-log graph, it becomes nicely linear.

       

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