Linn Blom and Oscar Hallberg present their master’s thesis

Student: Linn Blom and Oscar Hallberg
Main Supervisor: Anders Hägglund (VCC) and Markus Kvist (VCC)
Examiner: Håkan Johansson
Opponent: Josef Storm

Abstract of thesis

The investigation of modal requirements for vibration isolation is essential to be able to decide in an early development phase the performance of an engine set-up regarding vibration isolation. This study contains a parametric study of how the variation of design parameters affect the performance of a simplified Adams View model. Modal kinetic energy and participation factors are shown to be great measurements to use when describing the coupling between eigenmodes, and a combination of them can be a good modal requirement. When performing design of experiments by using the Latin Hypercube sampling method, it was possible to find which parameters that has the highest influence of the performance of the tested set-ups. Some conclusions are that the inertia matrix heavily influences the performance of the engine set-up and that a well performing configuration is less sensitive to variations than a worse performing one. In addition, this thesis work has provided a framework for modal analysis that can be used by Volvo Cars Corporations in further research within this subject or for other purposes.