incorrect in tensile simulation

[NEROOO]

Hi,

I've conducted a tensile test in explicit with mass scaling, however, the result seems not to meet the real situation, didn't break in the middle part...the load is applied on the bottom and top surface of the bar.

looking forward to have any solution to it, thanks a lot!

 

[FEA way]

More details about this model are necessary. What kind of sample and tensile test is that ? Which material model and which type of damage was used ?

 

[NEROOO]

@FEA way

it's a tensile bar with voids in it, the material is Ti alloy with ductile damage.

I have attached .inp file for it

https://files.engineering.com/getfile.aspx?folder=26e70768-31cc-4e46-ac56-d3c4c5b0beef&file=bar.rar

Thank you!