meshparts
Mechanical
- Feb 17, 2005
- 490
I am working on a statical analysis of a framework consisting of LINK8 and MASS21 elements.
The MASS21 elements have no rotational dof's (keyopt(3)=2)
and are located at some ends of the LINK8 elements.
The framework is subject to acceleration load.
The results are very incredible: some link elements and mass elements rotate very fast about its own symmetry axis.
Without mass elements I get correct resuls.
How is that posible?? The Mass21 elements have no rotational dof's...
And how kann I avoid this problem?
Thanks!
Alex
The MASS21 elements have no rotational dof's (keyopt(3)=2)
and are located at some ends of the LINK8 elements.
The framework is subject to acceleration load.
The results are very incredible: some link elements and mass elements rotate very fast about its own symmetry axis.
Without mass elements I get correct resuls.
How is that posible?? The Mass21 elements have no rotational dof's...
And how kann I avoid this problem?
Thanks!
Alex