Citlivostní studie a optimalizace zadního zavěšení

Abstract

The main objective of the thesis was to model a rear independent suspension using a CAE software and to understand the sensitivity behavior of the modeled suspension kinematics, by modifying its primary geometry with respects to camber, caster angels and to optimize the design. During the course of study, a brief explanation of currently used suspension type for RWD and AWD are discussed. A detailed study on Multi-link suspension's modeling, kinematic characteristic along with study on multi-body modeling and simulation using ADAMS/Car is carried out in order to build a functional multi-body model of rear integral-link suspension. The latter part of study is focused on sensitivity of integral-link suspension hardpoints. Highlighting which geometric point affect the kinematics. Using these hardpoints as input variable for the optimization process to obtain new geometry as per the performance targets defined. Then, compare its kinematic characteristic with the primary design. Integral-link suspension modeling and simulation was carried out using ADAMS/Car. Toe, camber and caster variation with respect to vertical displacement of the wheel are obtained and the curve trends are compared with the existing model for validating the concept model. An automated optimization model using ADAMS/Insight is defined to achieve improved performance as closes to benchmarking target compared to the primary model by studying the sensitivity of integral-link suspension hardpoints.

The main objective of the thesis was to model a rear independent suspension using a CAE software and to understand the sensitivity behavior of the modeled suspension kinematics, by modifying its primary geometry with respects to camber, caster angels and to optimize the design. During the course of study, a brief explanation of currently used suspension type for RWD and AWD are discussed. A detailed study on Multi-link suspension's modeling, kinematic characteristic along with study on multi-body modeling and simulation using ADAMS/Car is carried out in order to build a functional multi-body model of rear integral-link suspension. The latter part of study is focused on sensitivity of integral-link suspension hardpoints. Highlighting which geometric point affect the kinematics. Using these hardpoints as input variable for the optimization process to obtain new geometry as per the performance targets defined. Then, compare its kinematic characteristic with the primary design. Integral-link suspension modeling and simulation was carried out using ADAMS/Car. Toe, camber and caster variation with respect to vertical displacement of the wheel are obtained and the curve trends are compared with the existing model for validating the concept model. An automated optimization model using ADAMS/Insight is defined to achieve improved performance as closes to benchmarking target compared to the primary model by studying the sensitivity of integral-link suspension hardpoints.