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Hi,
I am trying to solve a parametric equation in matrix form. I have to multiply and evaluate a number of matrices symbolically.
I have to calculate a force Nx which can be applied so that failure occurs according to certain criterion.
This means I need to solve the matrices and equations in parametric form and obtain the stress matrices in terms of the applied load Nx.
I am however not being able to solve the equations symbolically since I get errors like 'the value name must be the name of a function' or ' the array should be compatible' or 'the variable is undefined, check the label is set correctly'. Please advice how I can proceed.
Thanks
Solved! Go to Solution.
Where to begin?
You define Nx as a range variable without units. Then you define Ny and Nz as single-valued mass per inch.
The next line has N(Nx) then a Boolean equals followed by a vector (of a range variable and two scalars). If you tried to declare that a function (with ":="), I suspect even Prime would complain.
I assume that you've define Mt above (not shown) because the Mbar definition is not complaining.
Then you have another Boolean equality of a matrix multiplication.
And finally ,you ask Mathcad (primarily a numeric solver) to do a symbolic solve and it can't figure out what you want.
Neither can I
Hi Fred,
Thank you for the reply. I have been trying a number of things and that's why I have mixed up the Boolean and function definitions.
I have included herein the outline of what I am trying to obtain.
It would be an easy solution if it was a numerical problem. The problem requires me to find the value of Nx based on the Tsi Hill Criterion mentioned in the screenshot I have attached.
Any help on how to achieve the desired result would be appreciated.
Thanks
Thank you Mr. Fred,
That was really helpful. I was able to solve the particular problem.
Thanks.