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3617481-Visitor
1-Visitor
May 4, 2022
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Solve block not working mathcad 15

  • May 4, 2022
  • 1 reply
  • 4338 views

Dear all,

 

I've been trying to get this solve block to work for a system of forces and moments for quite some time now but I just can't get it to work. Can somebody take a look at it to see whats wrong?

 

Cheers

    Best answer by Werner_E
    Do you have any recommendations for literature about Mathcad 15?

     

    Unfortunately not. Personally I learned using Mathcad many years ago just by doing (you may also call it trial and error) and using the manual (up to version 11 the software included a hard printed reference manual which also deserved that name) and foremost the Mathcad Collab . The collab was the pre-predecessor of this support forum which was considerably better attended than this one and had a significantly higher number of users and posting frequency.  I learned a lot not only by asking if I got stuck but also mainly by simply following the discussions about the questions of others.
    I collected quite some books about Mathcad over the years but I seldom found them particularly useful and most of the time , I resorted just to the old manual. You may still be able to find a pdf of the Mathcad 11 reference manual searching the net (it also was posted here in the forum now and then) but I am not sure if its legal to download it 😉

    1 reply

    W
    Werner_E25-Diamond I
    25-Diamond I
    May 4, 2022

    Your solve block uses a lot of variables which are not defined.

    They obviously are intermediate variables but when you introduce them you also have to use them in the final "Find" command even though you may not be interested in their values.

    An alternative might be to use functions.

     

    Here is a simple example of what I am talking about.

    This solve block fails because c is not defined:

    Werner_E_0-1651656884195.png

     

    We add a guess for c and also add it to the "Find" command even though we are only interested in the values of a and b

    Werner_E_1-1651656946009.png

     

    And here is what I meant with using functions:

    Werner_E_2-1651656977653.png

    You may define the functions also within the solve block.

      3
      3617481-VisitorAuthor
      1-Visitor
      May 4, 2022

      Dear Werner_E,

       

      Many thanks for your reply! I see.. Okay I'm making a few changes.

       

      I'll let you know.

       

      Cheers

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