With the increasing demand for quieter and more efficient electrical vehicles (EV), understanding and reducing noise and vibration in EV gearboxes is crucial. Besides achieving lightweight vehicles to reduce the fuel consumption, developing powertrains design with minimum noise and vibration level is a vital target in the automotive industry to meet the customer’s comfort expectations. In addition, in electrical vehicles noise, vibration and harshness (NVH) problems are more serious due to the absence of the masking effect of the internal combustion engine, which makes the auxiliary components more noticeable. In this thesis, first the assembling the gearbox housing, including of bolt connections, is created then the assembled model will be imported into finite element method (FEM) software like ANSYS. The goal is to simulate the vibration behaviour under different boundary conditions and forces. The aim of this work is modelling and simulation of assembled gearbox housings to investigate the effects of the variant’s boundary conditions and forces.

 

 

Initially, a CAD model of the gearbox assembly, including bolt connections and housings, will be prepared for FEM simulation. Various boundary conditions and excitation forces at the bearing locations and different lightweight design modifications such as cut-outs, varying thicknesses, and alternative rib arrangements and placements will be applied to evaluate their effects on NVH behavior. Subsequently, the natural frequencies, corresponding vibration modes, and harmonic response of different gearbox housing variants will be analyzed using ANSYS or ABAQUS and evaluated based on NVH-relevant criteria. The findings will contribute to optimizing the gearbox design for improved noise and vibration performance in electric vehicle applications.

 

•    You are studying mechanical engineering or a comparable course
•    You work purposefully and independently
•    Interest and initial experience in CAD modelling and assembly (preferably in Creo software)
•    Interest and initial experience in FEM software (ANSYS or ABAQUS) and vibration analysis 
 

If you are interested, please send your application with a brief motivation, CV and transcript of records to: Khadijeh Farshi, M. Sc.