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S
sm�ller-21-Visitor
1-Visitor
March 2, 2016
Question

Need advice for the search function (numerical solution of equation)

  • March 2, 2016
  • 6 replies
  • 1953 views

Hey,

i would need another short help of you guys.

I have an equation and need to solve it for a variable with the search(x) function. Now my problem is that i need to do it for many loadcases.

I have given vectors for the variables in the equation and a given vector for the beginning search variable.

How can i do it in mathcad so that mathcad is solving the equation for every row of the vectors.

I have an given example in the mathcad file.

I have problems here how to define the code 😞

Best thx

6 replies

S
sm�ller-21-VisitorAuthor
1-Visitor
March 2, 2016

I tryed to add a for Code but not working hmmm

Maybe its only a small failure

R
RichardJ19-Tanzanite
19-Tanzanite
March 2, 2016

You can't use find in a program.

F
Fred_Kohlhepp23-Emerald I
23-Emerald I
March 2, 2016

You can use the symbolic solver to get a function.  Because you have a quadratic function there are two solutions.  You must decide which is physically relevant.

S
sm�ller-21-VisitorAuthor
1-Visitor
March 3, 2016

thx for the tipp.

The problem is i tryied this but what i dont understant:

the numerical solution gives a result of 6.819 mm what is the right result

But when i solve it analytical directly i always get - 6,819 . What is the wrong result and minus.

Why do i get a minus. Maybe im loosing a result by directly solving.

But i think the numerical solving by vectorising is the better method since i have much more complicated solutions.

Thx for the good tip. I really need it. I was close to the solution i had the arrow on the right side of the equation upper the search function.

.

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-MFra-21-Topaz II
21-Topaz II
March 3, 2016

numerical_solution.jpg

S
sm�ller-21-VisitorAuthor
1-Visitor
March 5, 2016

uff thx for help. Long solution

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