Vibration Damping Optimization using Simulated Annealing Algorithm for Vehicle Powertrain System

M O Genc,N Kaya

doi:10.48084/etasr.3242

Abstract

The clutch system in a vehicle’s powertrain system controls torque transmission and has vibration damping properties. A vehicle’s clutch system is subjected to high dynamic loads and vibrations, under operational conditions, that need further system analysis. The torque generated from the vehicle’s engine creates vibrations at different levels of frequencies. For this purpose, vibration damping systems have to be designed to make the vehicle work more efficiently. In this study, the 1-D modeling of powertrain system, including metallic clutch damper springs, was subjected to vibration optimization with the Simulated Annealing (SA) algorithm. This novel methodology accelerates the powertrain system vibration optimization and provides assumptions eliminating cost and time in real vehicle testing.

Highlights

Clutch damper springs, used in vehicle powertrain systems, are of great importance as they damp engine vibrations during torque transmission (Figure 1)
This study examines the powertrain system of a gasoline engine vehicle, having 110Nm torque, integrating the Simulated Annealing (SA) algorithm into powertrain system vibration optimization simultaneously with 1-D modeling, providing assumptions and precautions prior to production phases
Excessive vibrations are making the driving experience uncomfortable, while unwanted oscillations result in mechanical damages

Summary

INTRODUCTION

Clutch damper springs, used in vehicle powertrain systems, are of great importance as they damp engine vibrations during torque transmission (Figure 1). In [5], an analysis on the vibration frequency level of a 3-cylinder engine proposed improvements to the clutch design. The study of a passenger car’s powertrain system modeling determined the clutch damper disc stiffness behavior on driving conditions in [6]. The design of transmission gears and the optimization of clutch-damping factors, by applying harmonic analysis, were studied in [10]. This study examines the powertrain system of a gasoline engine vehicle, having 110Nm torque, integrating the Simulated Annealing (SA) algorithm into powertrain system vibration optimization simultaneously with 1-D modeling, providing assumptions and precautions prior to production phases

CLUTCH DAMPER SYSTEM

MODELING OF THE POWERTRAIN SYSTEM

OPTIMIZATION RESULTS

CONCLUSIONS