I need to draw this plot for the effective stress. However, this error occur ..How can I fix it?
ACCEPTED SOLUTION
Accepted Solutions
The reason for the error is that your vector sigma'v;top is a nested vector. Each element of this vector is a 8x1 vector on its own, so you actually have 64 values stored in that vector.
For every value of the range variable k you get a full vector at the abscissa and not just a single scalar as it is needed.
Because I don't know what the correct values for this vector should be and because your sheet is full of red errors right from the start, its impossible for me to help with a problem an page 11, sorry.
The reason for the error is that your vector sigma'v;top is a nested vector. Each element of this vector is a 8x1 vector on its own, so you actually have 64 values stored in that vector.
For every value of the range variable k you get a full vector at the abscissa and not just a single scalar as it is needed.
Because I don't know what the correct values for this vector should be and because your sheet is full of red errors right from the start, its impossible for me to help with a problem an page 11, sorry.
@YA_10963798 wrote:
Actually I think I did it wrong. Because it should be one vector. but accumlated . For example if sigma is = ( 0,1,2,3) .... 0+1=1 then 1+2=3, then 2+3=5....... and the result of the last should be the sum of all previous results = (1,2,5,..). And that will produce one vector not 8 vectors with 64 values.
.
A cumulative sum is such a common need that I'm surprised that Mathcad doesn't have a built-in cumulative sum function. I note you've found your probem and therefore one of the many possible solutions, but it can be useful to have a cumsum function in your Mathcad toolbox
Stuart
