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slight deviation in Abaqus stress-strain curve..need help

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csmanien

Mechanical
Jan 13, 2010
7
IN
How to overcome this problem?
While comparing Tensile Stress-Strain curve of Experimental and Abaqus results, slight deviation after yield stress found in Abaqus results.
-checked material data elastic and plastic
-Tried BC with velocity = 0.00833 mm/sec or displacement = 2 mm with smooth/equally spaced/tabular amplitudes. But the deviation exists.
-Step, Time period with auto or fixed parameter are tried. But still deviation exists.
New_Picture_neti8a.bmp
https://res.cloudinary.com/engineering-com/image/upload/v1494852553/tips/New_Picture_neti8a.bmp]
 
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