Rattle predictions using linear and non-linear structural dynamics simulations
Ladda ner
Typ
Examensarbete för masterexamen
Program
Applied mechanics (MPAME), MSc
Publicerad
2021
Författare
Muthya, Suray Srinath
Selvaraj, Srikannan
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
The purpose of this project is to study the parameters in the already developed
metrics for the Squeak & rattle, which are annoying sounds in a passenger car, as
a result of two surfaces sliding or due to normal impact respectively. These are
indicators of poor quality and burden warranty costs to the car manufacturers. The
rattle event is predicted by validating against experimental data and to compare the
accuracy of the S&R risk severity metrics calculated from the linear and non-linear
structural dynamics simulations. Though there is a lack of accurate simulations
and post-processing methods, the methods used here helps in the evaluation of
these issues in the product development process itself by virtual simulations and
parameter study. A simple mechanical system is studied for the impact study and
various output parameters from the experimental rattle setup are correlated with
the simulation results in order to reduce the computational costs of complex setups
and mass production.
Beskrivning
Ämne/nyckelord
Rattle , Implicit and Explicit , modal analysis , frequency response or steady state dynamics , linear and non-linear , structural dynamics , model correlation