Unfortunately, you seem to have done a copy/paste from Word or something, rather than type the question and insert the images directly into the text box of the Forum. That means the screen snapshots have lost the native resolution and are not legible. In the future, please use the Insert Image button to paste in a screen snapshot file and if you are writing in Word, click the Clear Formatting buttin before you submit a text box.

Is there a reason you solved this in Explicit Dynamics? I suggest you use Static Structural next time.

The solver uses True Stress and True Strain, not Engineering Stress and Engineering Strain.  True Strain has a different equation than Engineering Strain.  True Strain = ln(L/L0) = ln(1.5) = 0.41