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dynamic crack initiation

Submitted by llguang on

Hello everyone, I am studying the dynamic crack initiation problem of composite material. Just like the below imagine ,a crack perpendicular to the interface of two different materials, under dynamic load, the crack will propagate, at the crack tip I use the singular element to simulate the stress and strain state. after I have the crack tip stress, how can I calculate the energy release rate of different direction, for example, also along the original crack line or perpendicular to the original crack line., or kink from the 45 degree of original crack line.

Every answer is welcome.

 

L. Roy Xu

I’m an experimentalist so I couldn’t tell you how to calculate the energy release rate. However, you can find some references from my attached papers. From these papers, you can find all cases of dynamic crack initiation and propagation. You can visit my website for real movies, which can be used to validate your simulations: 

http://people.vanderbilt.edu/~l.roy.xu/mv.html

 

Papers:

 

http://people.vanderbilt.edu/~l.roy.xu/papers/Wang-Xu-06-IJSS.pdf

 

http://people.vanderbilt.edu/~l.roy.xu/papers/JMPS-2003-xu-huang-rosakis.pdf

Mon, 04/20/2009 - 21:08 Permalink
llguang

Thanks your answer

The paper and the web address i have lookedand learned a lot.Just from this i want to do some work on this field.

Thanks ,best wishes.

工欲善其事，必先利其器！

Tue, 04/21/2009 - 16:07 Permalink