In this calculator you are able to determine the uniform axial stress experienced by an object under an axial tensile or compressive load.

You can determine the cross-sectional area for objects which have typical cross-sectional shapes by using the "Sub" button (e.g. square, circular, rectangular etc...), or input your own area for more custom cross-sections.

As with all of the calculators in this app, many common units are available in both metric and imperial unit systems.

 

Two examples of how to use this calculator are shown below.

  1. Example 1 - Standard Cross-Section
  2. Example 2 - Custom Cross-Section

Axial Stress-Main Screen  Axial Stress-Calc Screen

 

 

Example 1 - Standard Cross-Section:

Question:

You have a hollow circular bar (tubular bar) which is subject to a 50kN tensile load as part of a support structure. The bar has an outer diameter of 1 inch and an inner diameter of 3/4 inch.

What is the axial stress experienced by the bar expressed in MPa?

 

Solution:

  1. Enter the tensile load of 50 into the "Applied Force" input field
    Axial Stress-1

  2. Change the units of "Applied Force" to "kN" using the dropdown menu
    Axial Stress-2

  3. Select the "Sub" button from the "Cross-sectional Area" input field
    Axial Stress-3

  4. From the dropdown list above, select the "Hollow Circle" option
    Axial Stress-4

  5. Enter the outer diameter of 1 into the "Outer Diameter" input field and change the units to "in" from the dropdown menu
    Axial Stress-5

  6. Enter the inner diameter of 3/4 (0.75) into the "Inner Diameter" input field and change the units to "in" from the dropdown menu
    Axial Stress-6

  7. Now that you have entered in the cross-section's dimensions the area has been calculated automatically in the default unit scale (m2). Press the "Accept" button in the top right hand corner of the screen to return to the main calculator page with your area value.
    Axial Stress-7

  8. The "Stress" has now been calculated and is displayed at the top of the screen, using the dropdown menu, chage the units to "MPa" for the desired output
    Axial Stress-8

  9. The final answer, 225.55 MPa, is now displayed at the top of the screen with the desired units
    Axial Stress-9

    As a result, the hollow circular bar with an outer diameter of 1in and an inner diameter of 3/4in will experience 225.55MPa of axial tensile stress when subject to a 50kN force.

 

Example 2 - Custom Cross-Section:

Question:

You have a bar which is subject to a 50kN tensile load as part of a support structure. The bar has a cross-sectional area of 160mm2.

What is the axial stress experienced by the bar expressed in PSI?

 

Solution:

  1. Enter the tensile load of 50 into the "Applied Force" input field
    Axial Stress-1

  2. Change the units of "Applied Force" to "kN" using the dropdown menu
    Axial Stress-2

  3. Enter the cross-sectional area of 160 into the "Cross-sectional Area" input field and change the units to "mm2" from the dropdown menu
    Axial Stress-10

  4. The "Stress" has now been calculated and is displayed at the top of the screen, using the dropdown menu, chage the units to "psi" for the desired output
    Axial Stress-11

  5. The final answer, 45324.29 psi , is now displayed at the top of the screen with the desired units
    Axial Stress-12

    As a result, the bar with a cross-sectional area of 160mm2 will experience 45324.29 psi of axial tensile stress when subject to a 50kN force.

 

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