چكيده به لاتين
Modern automotive engineering focuses on the characteristics of the car which potential buyers are looking for when they decide to buy a car. Comfort and car ride and quiet environment without vibration is one of the main features which customers are looking for when buying a vehicle. The vibration performance of the car is one of the first features which through that the customer can assesses the quality of the car.
In this thesis, to evaluate the performance of the vehicle body against vibrations, the finite element model of the vehicle has been completed then, the complete model of the body parts of the car was introduced into the specific points of the shift. according to the ISO2631 standard, the acceleration created at the seat of the car floor is a criterion of evaluation. For the displacements applied to the model FourPost test results are used. After performing the analysis, 6 design parameters are defined. in order to find optimal parameters levels and to minimize "Root mean square acceleration" and "Maximum acceleration", Taguchi method and 8 Test are used. Also, the analysis of ANOVA to extract the effect percentage of each parameter on above outputs is used. After doing the above analyzes, Characterized which material of the floor pan and the thickness of the suspension towers belonging have the greatest contribution in reducing the above parameters.
Keywords: vibration, Ride comfort, ISO2631, finite element analysis, Taguchi.
