What are the crack like thing in abaqus?

[Puhan]

Hello

I hope you are doing well amidst this pandemic.

I am new to Abaqus, I am modeling a material that is inside another material. I am giving stress to the inside material so that cracks can form. It is forming but unfortunately, there are some other lines as attached. I want to know what are these lines? I mean those are there initially. I chose 'feature edges' option. Please let me know, what do you think.

Regards
Biswabhanu Puhan

 

[aeveno]

Are you talking about the black lines?
Why don't you have any isovalues displayed?

Alexis EVENO