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Positive & Negative Max Principal Stress?

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AndyWalker
12209 Views, 2 Replies

Positive & Negative Max Principal Stress?

Hello,

 

Can someone help me please.

 

What does the positive and negative max principal stress represent?

Is it tension and compression?

 

 

 

many thanks

andy

2 REPLIES 2
Message 2 of 3
AndyWalker
in reply to: AndyWalker

dont worry i found the answer:

 

Maximum Principal

This command sets the results display to calculate the maximum principal stress (S1) for displaying or data output. The principal stress can be displayed for element types with area (2D, plates, and so on) and volume (bricks). Positive (+) indicates tension, and negative (-) indicates compression. See Mohr's Circle for an illustration of this.

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Per Rick Fischer, Principal Engineer at Argonne National Laboratory

 

The first principle stress is not by definition tensile. It is the largest of the three principal stresses. If my principal stresses were -10 MPa, -24 MPa, and -4 MPa, then s1 = -4 Mpa, s3 is -24 Mpa, and s2 is-10 MPa.

 

 

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