Index in position 3 exceeds array bounds (must not exceed 1).

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Taylor Davis
Taylor Davis 2020-2-25
回答： Vimal Rathod 2020-2-28
I'm currently changing a 2D Truss program to 3D and im not sure how to change line 22. The excel file is attatched if needed
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Sindar
Sindar 2020-2-25
Ok, lots of thoughts:
Most likely, K and S(ID,ID,ID) should be 6x6x6.
So, it seems like ID should be 1x6, so that S(ID,ID,ID) is 6x6x6. This implies that either NID gain a third element, or there is another element in the ID pattern from NID(1) and NID(2). I couldn't immediately tell you which, but
NID=MEMBERS(i,1:3)
is easy to implement. Then you can check the sizes of everything again and see if they make sense (and, whether the code errors)

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Vimal Rathod
Vimal Rathod 2020-2-28
Going through the comments it is evident that when calling
S(ID,ID,ID) = S(ID,ID,ID) + K;
The size of S(ID,ID,ID) is 4*4*4 and size of K is 6*6 which doesn't match and thus you will be getting a error as:
Array dimensions must match for binary array op.
You must change your code accordingly making sure that the dimensions match.

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