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Effective strain range

Submitted by Sushanta on
research

HI everyone

 

I am doing research using Sih's strain energy density concept for predicting  fatigue failure in asphalt pavements.  I am pretty new in this area and got stuck while reading some papers. Anybody has some idea how to predict the effective strain range near the crack tip. 

 

ΔE= A/Rj∫ΔEeff dr

and 

 how to get the constant A and β. 

 

 

regards 

sushanta bhusal