Feedback for "fix12"

[txt, isOK]: fb_fix12(o, n, i, description)

• txt feedback text
• isOK test result
• o list of objects
• n names field
• i index of "fix12" object
• description string with Text to identify the object for the user

[txt, isOK]: fb_fix12_name(o, n, i)

• txt feedback text
• isOK test result
• o list of objects
• n names field
• i index of "fix12" object

These functions provide Feedback for Free Body Diagrams.

Source

"fix12" is a bidirectional (fixed) support. It is to be replaced by two reactions.

Checks done by the fb_fix12():

• Is the object really of type "fix12" (just for developers)?
• Is the object deactivated?
• Has meclib found any reactions by proximity check?
• Are there exactly two reactions?
• Are both reactions of type "force"?
• Are the names of the reactions unique (not identical)?
• Do the reactions have different directions?

Checks done by the fb_fix12_name() (only if there are one or two reaction forces):

• Is the base name a single character?
• Does the base name match the name of the support point?
• Is there a direction index?
• Is the index a single character?
• Is the index one of x, y, h(orizontal), v(ertical)?
• Does the index match the actual direction?

Example:

• "FBD Tutorial Festlager (I)"
  

• "FBD demo (l)"

Typical PRT

Feedback variables:

obj: stackjson_parse(objects);
[text, isOK]: fb_fix12(obj, names, i_A, "Lagerung bei A: ");
[ntext, nOK]: fb_fix12_name(obj, names, i_A);

PRT node 1 test for correct direction

Algebraic test for isOK = true and feedback of {@text@} for both branches.

PRT node 2 test for correct name

Algebraic test for nOK = true and feedback of {@ntext@} in the false branch (with penalty of 0.5).