I am trying to plot a stress strain curve using a model but the strain values don't start from zero. wonder if anyone can look at the template attached.
Thanks for the question. Looking at the equation for epsilon.t and sigma t, a value of zero sigma t should yield a value of zero epsilon.t. If I just define sigma t as zero, I am in fact getting epsilon.t as zero as it should be. However when I define a set of values for sigma t from zero, it doesn't give me epsilon.t values starting from zero.
