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Date : 2016-06-23 12:24:21

INTRODUCTION:

 

This theory assume that when the maximum principal stress in a complex stress system reaches the elastic limit stress in a simple tension, failure will occur.

Therefore the criterion for failure would be

s1 = syp

For a two dimensional complex stress system s1 is expressed as

 

 

                                        

 

Where sx, sy and txy are the stresses in the any given complex stress system.

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