flender perth H2-DV20A Helical gear reducers H2

Flender/Flender Gear Units/Helical gear reducers H2

and differential housing are modeled using force coupling elements. These allow for the effects of the tooth forces on the bending vibrations of the shafts, and transfer the resulting bearing reaction forces and moments to the housing structure. The central element of the equivalent mechanical model is the tooth mesh, in which the excitation mechanisms described in Sect. 5.1take effect. The wheel and pinion bodies are linked in tooth contact with the aid of two force elements realized as spring and damper elements. In order to enhance the accuracy with which the bevel gear stage is reproduced, the tooth meshing forces are determined with the help of tooth contact analysis and utilized in the spring and damper element of the multiple body simulation. The response of the system to the input torque and speed are determined with the aid of the MBS model, resulting in new positions of rotation for the pinion and wheel, which in turn serve as input variables for the tooth engagement. 5.4.2 Calculating Load-Free and Load-Dependent Running Behavior It is crucial for the quality of the numerical model that transmission errors should be determined as precisely as possible. The best possible way to reproduce three- dimensional contact conditions during tooth mesh is tooth contact analysis (see Sect. 3. accompanied by calculation of the transmission error under load (see Sect. 4.4.3.7 ). Damping during tooth contact is extremely hard to quantify and may thus be simplied to constant. This leads to sufciently accurate results when compared to measurements [ GEIS0 ], [GERB8 ]. Using tooth contact analysis, the load-free and load-dependent transmission errors may be determined individually [ NEUP8 ]. The tooth contact analysis method is consequently suitable for the detailed analysis of the operational behavior in discrete operating state. Fig. 5.3 Example of MBS model of bevel gear stage with spring and damper elements in the tooth contact2 5 Noise Behavior It is possible