INVESTIGATION OF THE INITIAL SYSTEM ANGLE OF A TORSION SPRING USING CAD

Paredes Manuel (1)

1 ICA - Institut Clément Ader

Helical torsion springs with tangential legs are used for many applications: from simple, everyday systems like clothes pegs to advanced systems, such as sectional doors. Torsion springs are usually exploited with an inner rod as a guide. The space required between the spring and the rod make the spring tilt. Unfortunately, as far as we are aware, no industrial software is able to determine the initial system angle made by the spring in its tilted position. All the torque/angle curves are presented with relative angles. This means that, whatever the number of coils considered, the angle is null when the torque is null. For that reason, we have developed a methodology using both CATIA and ABAQUS to determine the system angle at the beginning of the behavior. The model exploits wires designed with CATIA and imported into ABAQUS for the center rod, the torsion spring, and the rods of the system to apply the torque. Several options for modeling contact between the various parts were investigated. They mostly used a connector with an axial property and a stop criterion. The results obtained are very interesting and enable further studies to be planned.

Domaines: Génie mécanique [physics.class-ph]

Paredes Manuel. INVESTIGATION OF THE INITIAL SYSTEM ANGLE OF A TORSION SPRING USING CAD. Ingegraf 2017, Jun 2017, Gijon, Spain. ⟨10.48550/arXiv.1904.05196⟩. ⟨hal-03744461⟩