First time I have attempted to use this property. After meshing & hitting run, an error message quickly returns "Non-positive definite Moment of Inertia matrix at remote mass 4". I only have 1 mass currently connected with rigid links. Any help appreciated .
I has this error a few years ago. From what i can remember my moment of inertia values for the remote mass were zero. I just entered some arbitrarly small value (for the moment of inertias) to solve the problem. Then it worked
I tried that but unfortunately it made no difference.
( For additional info, the model works ok if I suppress the remote mass.)
that's odd
Have attach a simple model with remote mass. When Ixx Iyy Izz =0 zero fails to run
And not zero runs. Using Sw 2010.
Can you post a simple model back and I'll play with it . 2011 files ok to Jst have to test them at home later.
Actually if Lxx,Lyy,Lzz have values but Lxy,Lyz,Lxz are left at zero the error does not occur.
I must brush up on inertial properties of solids.
Glad it works.
The Lxy Lxz Lyz properties have to be less than the Lxx, Lyy, Lzz. or the error occours.
There is a reasonably good article on Wikipedia on Principle Moments of inertia.
Glad it works.
The Lxy Lxz Lyz properties have to be less than the Lxx, Lyy, Lzz. or the error occours.
There is a reasonably good article on Wikipedia on Principle Moments of inertia.