How to create a 28x28 matrix in Mathcad

[AaronEvans]

Hi, I am trying to calculate a stiffness matrix of the size of 28x28. However there is a limit to the size of a matrix in mathcad of 600 units. Is there a way of getting around this? or an alternative method I can use?

 

[petb]

Have you tried assigning e.g. the last element in your stiffness matrix and then populate the other matrix elements? Something like this:

[pre] K[27,27:100 [/pre]

Now, you have a matrix with 100 assigned to the last element, the rest is zero. Now it's possible to populate the other elements like this:

[pre] K[row,col:value [/pre]

HTH

/PB

 

[IRstuff]

The graphical matrix definition is limited, but you can enter relatively gigantic matrices through an Excel component.

TTFN
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[IRstuff]

or, you can use the READ functions to read a standard text or Excel formatted file for a matrix

TTFN
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