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Ductile fracture prediction in Taylor Test

Submitted by sivaprasad.avs on

I am reading the Weirzbicki's paper titled "Numerical Prediction of fracture in the Taylor test". I do not understand the terms stress triaxility and Lode angle parameter clearly. What does the term "negative stress triaxiality at -1/3" stand for? Kindly explain me these two aspects clearly and also provide some references for reading.

Thanks and Regards,

Siva Prasad A V S.

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Fracture Mechanics Forum
Kejie Zhao

Stress triaxiality denotes the ratio of hydrostatic stress and Von-mises stress. This might be in some textbooks, or with google, I find the following paper

On the Application of Stress Triaxiality Formula for Plane
Strain Fracture Testing.  J. Eng.
Mater. Technol. 2002

 

Tue, 02/02/2010 - 18:14 Permalink