TY  - JOUR
U1  - Wissenschaftlicher Artikel
A1  - Steinbach, Kevin
A1  - Lechler, Dominik
A1  - Kraemer, Peter
A1  - Groß, Iris
A1  - Reith, Dirk
T1  - A Novel Approach to Predict the Structural Dynamics of E-Bike Drive Units by Innovative Integration of Elastic Multi-Body-Dynamics
JF  - Vehicles
N2  - This paper presents a novel approach to address noise, vibration, and harshness (NVH) issues in electrically assisted bicycles (e-bikes) caused by the drive unit. By investigating and optimising the structural dynamics during early product development, NVH can decisively be improved and valuable resources can be saved, emphasising its significance for enhancing riding performance. The paper offers a comprehensive analysis of the e-bike drive unit’s mechanical interactions among relevant components, culminating—to the best of our knowledge—in the development of the first high-fidelity model of an entire e-bike drive unit. The proposed model uses the principles of elastic multi body dynamics (eMBD) to elucidate the structural dynamics in dynamic-transient calculations. Comparing power spectra between measured and simulated motion variables validates the chosen model assumptions. The measurements of physical samples utilise accelerometers, contactless laser Doppler vibrometry (LDV) and various test arrangements, which are replicated in simulations and provide accessibility to measure vibrations onto rotating shafts and stationary structures. In summary, this integrated system-level approach can serve as a viable starting point for comprehending and managing the NVH behaviour of e-bikes.
KW  - power spectrum
KW  - structural dynamics
KW  - noise, vibration, and harshness
KW  - electrical bicycle drive unit
KW  - multi-body dynamic simulation
Y1  - 2023
UN  - https://nbn-resolving.org/urn:nbn:de:hbz:1044-opus-75371
SN  - 2624-8921
SS  - 2624-8921
U6  - https://doi.org/10.3390/vehicles5040068
DO  - https://doi.org/10.3390/vehicles5040068
VL  - 5
IS  - 4
SP  - 1227
EP  - 1253
S1  - 27
PB  - MDPI
CY  - Basel
ER  -