For PFF model, what is different by using the grain tracker and by not using grain tracker

[caoductoan379]

Dear Moose

I am simulating the PFF example. I used a input file with including the grain tracker part and without including the grain tracker part to run program for the same micro structure . I received two different results for crack propagating.

Could you please let me know what is different by using the grain tracker and by not using the grain tracker in Moose for PFF model?

Kind regards,

Toan

[jiangwen84]

It will be helpful if you attach your input file. What do you use grain tracker for?

[caoductoan379]

Thanks Jiang

Right now, I understand what is different because i used two constitutive function different

1. without grain tracker
   [./elasticity_tensor]
   type = ComputeElasticityTensorCP
   C_ijkl = '1.27e5 0.708e5 0.708e5 1.27e5 0.708e5 1.27e5 0.7355e5 0.7355e5 0.7355e5'
   fill_method = symmetric9
   read_prop_user_object = prop_read
   [../]

2. with grain tracker

[./ElasticityTensor]
type = ComputePolycrystalElasticityTensor
grain_tracker = grain_tracker
outputs = all
[../]

Kind regards,

Toan