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Help with mat054

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Posts: 5
Topic starter
(@delcon)
Unpaid Intern
Joined: 3 years ago

Good day, guys!
Got a very strange problem. I am solving some simple along fiber tensile problems for composite. 
Almost all of them (34 of 35) were solved ok, except 1 (so the problem i suppose in material card, but why)

This material fails before stress riches XT (xt=518Mpa, fail on 350-400Mpa). why that can be and how to fix this? 
attach the file

 xt
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Posts: 5
Topic starter
(@delcon)
Unpaid Intern
Joined: 3 years ago

Update:

The problem is timestep defined in control - implicit auto. According to logs it falls below DTMIN. But no idea why.

Maybe the problem is with convergence, but no idea how to fix this.

How can i fix this?

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Negative Volume
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(@negativevolume)
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