A comparative study of all three methods will show the effectiveness of the beam-to-beam simulation (Case 3).
Displacement
The vector sum of displacement (USUM) is plotted for the three models. The values are similar for all three.
von Mises Stress
Von Mises stress (SEQV) is plotted for the three models. The plots show that maximum stress occurs at a similar location in all three models, and the overall stress pattern is similar.
Computational Time
The following table compares simulation time and cumulative iterations for the three cases.
DMP run
(8 processors) |
Case 1:
Solid Tube / Solid Coil |
Case 2:
Solid Tube / Beam Coil |
Case 3:
Beam Tube / Beam Coil |
---|---|---|---|
Wall time | 12153 | 3955 | 2232 |
Cumulative iterations | 416 | 201 | 227 |
The above data shows that the beam-to-beam simulation (Case 3) is less computationally expensive than the solid model.
Conclusion
The comparison of von Mises stress and computation time for these models illustrates that similar results and reduced computation time can be achieved by using a simplified beam model and beam-to-beam contact.