Hi,
In the AnyForceMomentMeasure object only the forces that are directly
applied to the point of interest (defined by the AnyRefFrame) are taken into
account. In your case the reaction force of the KneeDriver is not applied to
the GlobalRef, so you will get a value of 0. Please have a look at the
reference manual for further explanation.
You can use AnyForceMomentMeasure2 if you need to read the effect of a force
regarding to a distant point of interest. In all cases the equivalent force
and moment are given in global coordinates system. Here again I invite you
to read the related paragraph in the reference manual for more details.
Best regards,
Sylvain, AnyBody Support
From: anyscript@yahoogroups.com [mailto:anyscript@yahoogroups.com] On Behalf
Of Eng. Jawad
Sent: 1. januar 2009 18:09
To: anyscript@yahoogroups.com
Subject: RE: [AnyScript] Failed to resolve kinematic constraints (final kin.
error = 6.352310E-002)
Thanks, I revised the model and figured out the problem; however, I added an
instance of AnyForceMomentMeasure to measure the moments generated on the
knees, but did not get any values for the moment after running the inverse
dynamic analysis. I used the squat model in the tutorial. Here’s the
AnyForceMomentMeasure definition:
AnyForceMomentMeasure moment =
{
AnyForceBase &forceBase = Main.DriversHeelUp.KneeDriver.Reaction;
AnyRefFrame &refFrame = Main.ShrineLegModel.GlobalRef;
};
Any idea why I did not get any values?
Regards,
From: anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com
[mailto:anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com] On
Behalf
Of AnyScript Support
Sent: Tuesday, December 30, 2008 11:21 AM
To: anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com
Subject: RE: [AnyScript] Failed to resolve kinematic constraints (final kin.
error = 6.352310E-002)
Hi ?
As the error states this is a kinematic problem, at timestep 10 the
kinematics solver can not create a motion that fulfils all constraints.
The root of the problem can be multiple; it is very difficult to point out
without having the model.
I would recommend to go through the kinematic tutorial it explains
essentials about how the kinematicsl
http://www.anybodyt <http://www.anybodyt
<http://www.anybodytech.com/692.0.html> ech.com/692.0.html>
ech.com/692.0.html
Please ask again if you have further questions
Best regards
Søren, AnyBody Support
From: anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com
[mailto:anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com] On
Behalf
Of jawadelomari
Sent: 25 December 2008 08:42
To: anyscript@yahoogrou <mailto:anyscript%40yahoogroups.com> ps.com
Subject: [AnyScript] Failed to resolve kinematic constraints (final kin.
error = 6.352310E-002)
Hello,
I’m running the Kinematic analysis on a squat model, the analysis
does not continue, it only reaches step 10 and then displays the
following message:
Failed to resolve kinematic constraints (final kin. error = 6.352310E-
002)
ERROR(OBJ.MCH.KIN3) : ‘ObjectName’ : Kinematic analysis failed in
time step ‘integer’
Explanation:
This error may arise when the kinematical analysis fails to complete.
This implies that the kinematic constraints does not have a solution
or simply that the solution was not be found with under the given
numerical circumstances.
In the latter case, more appropiate settings of the kinematic solver
may allow for a solution.Additionally, a better choice of initial
positions will improve the solver ability to solve the constraints.
Any idea what the problem is?
Regards,
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]