Hi all! I am trying to understand the stress vs strain plot for my model. I am using Abaqus/Explicit so 'LE' is the strain that I selected for output. I am trying to understand the trend of stress vs LE plot. Why am I getting opposite that expected? Can anyone please help me to understand this? The loading and unloading branch are mirror image of what I am expecting. Also, why I am getting positive strain?
As Samy said i would agree that this seems that the node/element for which you are trying to see results has some boundary constraints issue like it just seems like that contact surface restraints between small element and column are not defined correctly its just not behaving like a rigid connection. And with applied loads it seems like element is slipping inside the column element which is resulting in decreased strain with applied stresses.
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