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Is there a failure criterion/model for brittle spheres?
Hi, everyone
I am a student. I am dealing with a failure problem of brittle spheres. These have a lot of flaws inside.I did some compression tests. Single spheres are crushed by a pair of parallel plates. I got the crush load distribution (in terms of critical contact force).
My question is:
is there a failure criterion/model which relates to load(critical contact force), Youngs moduli and Poisson ratios of shpere and plates, radius and friction coefficient?
Unfortranitaly, I can't get the friction coefficient between plate and sphere which influences the surface stress of spheres significantly as shown in ABAQUS simulation.
Both theoretical and empirical models are welcome.
I will appreciate any reply.
shuo ZHAO
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