WCA September 2016

By using the CAE structural software ANSYS Workbench ® , that is directly linked with RecurDyn ® , MFL performs the simulation of the mechanical behaviour of the most important parts of the planetary machine. The goal is to verify that all parts meet the strength and deformability specifications. On a planetary machine, all parts are under fatigue ( Figure 8 shows the load on the main frame of a cradle during a rotation around its axle); so that the engineers use specific methods for the verification of welded structure under fatigue as hot spot, Radaj methods and so on. Figure 9 shows deformation and equivalent Von Mises stress on a cradle in two positions. Finally, a check of the eigen-frequencies of all parts of the machine was done to avoid any risk of resonance. Conclusion Thanks to EnginSoft’s expertise in dynamic simulation it was possible to obtain an accurate simulation of a huge planetary stranding machine in a short time. The results of these simulations support Mario Frigerio’s mechanical designers for the dimensioning of the machine. On this large machine no mistake is acceptable. Virtualisation allows saving time in the development process and is an alternative to the classical approach, in particular when historical data, from similar applications, is not available. This collaboration between companies made it possible to optimise the design of this challenging project and preserve the high quality level and performance of Mario Frigerio’s products. This article contains references to the following products, which are trademarks or registered trademarks of their respective owners: ANSYS Workbench; RecurDyn .

Mario Frigerio SpA Via Lombardia snc, I-23847 Molteno (LC) Tel : +39 031 548 8100 Email : info@mariofrigerio.com Website : www.mariofrigerio.com EnginSoft SpA Via della Stazione 27, Mattarello, Trento, Italy Tel : +39 035 368 780 Email : info@enginsoft.it Website : www.enginsoft.it

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Wire & Cable ASIA –September/October 2016