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  • Diplomové práce - 12120
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  • České vysoké učení technické v Praze
  • Fakulta strojní
  • ústav automobilů, spalovacích motorů a kolejových vozidel
  • Diplomové práce - 12120
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Citlivostní studie a optimalizace zadního zavěšení

Rear suspension sensitivity study & optimization

Type of document
diplomová práce
master thesis
Author
Sethia Nisant M
Supervisor
Jirovský Václav
Opponent
Baněček Jan
Field of study
Advanced Powertrains
Study program
Master of Automotive Engineering
Institutions assigning rank
ústav automobilů, spalovacích motorů a kolejových vozidel
Defended
2019-02-07
Rights
A university thesis is a work protected by the Copyright Act. Extracts, copies and transcripts of the thesis are allowed for personal use only and at one?s own expense. The use of thesis should be in compliance with the Copyright Act http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf and the citation ethics http://knihovny.cvut.cz/vychova/vskp.html
Vysokoškolská závěrečná práce je dílo chráněné autorským zákonem. Je možné pořizovat z něj na své náklady a pro svoji osobní potřebu výpisy, opisy a rozmnoženiny. Jeho využití musí být v souladu s autorským zákonem http://www.mkcr.cz/assets/autorske-pravo/01-3982006.pdf a citační etikou http://knihovny.cvut.cz/vychova/vskp.html
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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.
 
URI
http://hdl.handle.net/10467/80640
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