Defining plasticity in ABAQUS

Hi all,

I am using Abaqus to simulate the behavior of a steel connection using a Static,General analysis. For bolts, the last values ​​for yield stress and plastic strain are 1 and 0.05, respectively.After running the model, I get values ​​of equivalent plastic strain in the bolts of 0.15.

Why do I get values ​​that are higher than the ones I define? Shouldn't I get a maximum of 0.05?  What can I be doing wrong?

Thank's,

Paulo Freitas