Relations are no longer satisfied

[SW]

When I open a particular model I get a number of warnings such as:



Some relations are no longer satisfied in CM2-20_CUTT-OFF_17P5 for D55



However, when I open that particular part, or activate it within the
assemblyy, the relations seen to be fine. Modelcheck does not find any
errors either. Does anyone have any idea what the problem is?



Sam

 

[puppet]

This generally means that d55 value doesnt exist.

think of it this way
u draw a line and pro-e weak dimensions it a value (d55)
you then delete this line
u draw a line and pro-e weak dimensions it a value (d56)

it may be the same line but pro-e has a differnt internal reference for it. All forumle and equations associated with the original dimension are now no longer satisfied.

The geometry might not fail, but it will not be what your expecting. Alwasy good to catch these things early.


<=-- check out the evil number of posts ive done.




Edited by: puppet

 

[slashct]

Might need a second regeneration because of the order of the relations, can you regenerate it a second time?


Also check for circular references in the relations.

 

[Dell_Boy]

As slashct mentioned, you probably have a circular relation like


d17 = d55 + d22
d55 = d18 + d27

another possibility is that d55 is the result of mass property calculations.

If you post the complete set of relations for CM2-20_CUTT-OFF_17P5 it would be far easier to diagnose your exact problem.


regards,
DB

 

[SW]

I've sorted out the CM2-20... part discussed above, it was invalid
dimnsion in the head part of the family table instance. Thank you for
the help.



I'm having similar problems in another part, also part of a family table:



"Some relations are no longer satisfied in SPRING_TORSION_YAW for D44."



Relations as follows:



------------------------------

height=total_height-wire_diameter

total_number_of_coils=(number_of_complete_coils + leg_angle/360)

pitch=height/number_of_complete_coils

d62 = wire_diameter

coil_diameter=outside_diameter-wire_diameter



/*The following relations make the leg dimensions equal

d44=d42

d45=d41

d71 = wire_diameter/2

--------------------------------



d44 and d42 both seem fine on the instance and family table head part.



Any ideas?

 

[Dell_Boy]

Do you have any sketcher relations that may affect d44 or d42

Is d42 a sketch reference dimension that is effectively driven by other elements of the sketch.

Is d44 also listed in a family table.

Is d44 positive when d42 is negative



DB