matching stress vs. strain relationship of simple steel block
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I am trying to reproduce the stress versus strain curve of a simple steel block subjected to uniaxial loading. Steel block has the width of 1 in. and length of 10 in, as seen below. The load is applied to the top surface. The element size of the mesh is 0.1 in. The problem is .. the stress-strain curve obtained from FEA didn't match the material response that I put as the input for simulation. The FEA one didn't even reach the ultimate stress of the material. It seemed that when the steel block started to yield at some region, stress wasn't distributed, rather being concentrated in that region. How can I solve this issue?