Noise and Vibration of Electric Drives: Space-Time Boundary Element Formulations
This research project is a part of the Collaborative Research Centre (CRC) Computational Electric Machine Laboratory. In this first German-Austrian Transregio CRC, research groups from TU Darmstadt, JKU Linz, and TU Graz want to achieve a paradigm shift in the design and development of electrical machines.
Noise and vibration (NVH) of electric drives is one of the design criteria for effective modern designs. Due to the broad band of exciting frequencies a time domain formulation for the simulation of structural vibrations and sound will be developed. The focus of the project will be on the efficient realisation of an IGA based boundary element method in time-domain, including variable time step sizes (generalized convolution quadrature method) and data sparse representations (generalized adaptive cross approximation) with respect to the spatial and temporal variables.
Simulation of noise and vibration with time domain BEM
Fast and data sparse method for optimization criterion NVH
Allows a broad-band simulation of electrical machines
Challenges and approach
Improvement of gCQ: Optimization of integration contour, adaptivity
Fast and data sparse BEM in time domain: 3D-ACA, model order reduction (frequency)
IGA based high-order BEM in space and time
Methodology for acoustics (noise) and elastodynamics (vibrations)