|
|
Measurement of the suspension flexibility
Suchý, Jan ; Zháňal, Lubor (referee) ; Porteš, Petr (advisor)
The thesis is focused on the method of determining the position of the wheel using photogrammetric equipment Tritop. Verification of the method is performed by measuring of the Formula Student Dragon II. Measured data are processed by algorithm for calculating compiled in Matlab software. The final section describes a concept the measurement of the suspension flexibility on the UADI device.
|
|
|
Design of Device for Vehicle Suspension Elastokinematics Measurement
Pohořelský, Petr ; Vančura, Jan (referee) ; Hejtmánek, Petr (advisor)
In my dissertation, I was concentrated mostly on a pliability of problematic of wheel´s suspension. My thesis is mostly a detail design proposal of a device, which is determined for a measurement and record of wheels suspension system´s elastic deformation. My theoretical part of this thesis is a search of existing devices and its problematic. The other part of my dissertation is a description of individual parts of my designed device and also an analysis of designed components´ intension. My thesis includes calculation, for case of realisation. There is also a design of measuring chain, methods of results´ evaluation after measuring with this device and theoretical analysis of measurement´s inaccuracy.
|
|
|
Design of Formula Student Wheel Suspensions
Urban, Marek ; Fojtášek, Jan (referee) ; Porteš, Petr (advisor)
Tato práce se se zabývá návrhem kinematiky zavěšení kol obou náprav. Na základě analýz jízdních dat, multi-body simulací v softwaru Adams Car, simulací v Matlabu a analytických kalkulací v Mathcadu, je navržena řada změn s cílem zlepšit jízdní vlastnosti vozu Formule student, tyto změny jsou následně implementovány do CAD modelu vozu. Jednotlivé změny kinematiky náprav jsou provedeny na základě analýzy konkrétního problému, který se snaží řešit. Jednou z problematik je zástavbová náročnost systému odpružení a zavěšení zadních kol, zde je cílem snížit hmotnost, výšku těžiště a moment setrvačnosti. Další problematikou je geometrie předního kola, kde je cílem zlepšit využití pneumatik a snížit síly v řízení. Dále se práce zabývá simulacemi elastokinematiky zadní nápravy, součástí je také návrh měřícího zařízení. V poslední části je zkoumán vliv provedených změn i elastokinematiky na jízdní dynamiku vozu v ustálených stavech za pomocí MM metody simulované s modelem celého vozu v Adams Car a zpracované v Matlabu.
|
|
| |
|
|
Design of Formula Student Wheel Suspensions
Urban, Marek ; Fojtášek, Jan (referee) ; Porteš, Petr (advisor)
Tato práce se se zabývá návrhem kinematiky zavěšení kol obou náprav. Na základě analýz jízdních dat, multi-body simulací v softwaru Adams Car, simulací v Matlabu a analytických kalkulací v Mathcadu, je navržena řada změn s cílem zlepšit jízdní vlastnosti vozu Formule student, tyto změny jsou následně implementovány do CAD modelu vozu. Jednotlivé změny kinematiky náprav jsou provedeny na základě analýzy konkrétního problému, který se snaží řešit. Jednou z problematik je zástavbová náročnost systému odpružení a zavěšení zadních kol, zde je cílem snížit hmotnost, výšku těžiště a moment setrvačnosti. Další problematikou je geometrie předního kola, kde je cílem zlepšit využití pneumatik a snížit síly v řízení. Dále se práce zabývá simulacemi elastokinematiky zadní nápravy, součástí je také návrh měřícího zařízení. V poslední části je zkoumán vliv provedených změn i elastokinematiky na jízdní dynamiku vozu v ustálených stavech za pomocí MM metody simulované s modelem celého vozu v Adams Car a zpracované v Matlabu.
|
|
|
Design of Device for Vehicle Suspension Elastokinematics Measurement
Pohořelský, Petr ; Vančura, Jan (referee) ; Hejtmánek, Petr (advisor)
In my dissertation, I was concentrated mostly on a pliability of problematic of wheel´s suspension. My thesis is mostly a detail design proposal of a device, which is determined for a measurement and record of wheels suspension system´s elastic deformation. My theoretical part of this thesis is a search of existing devices and its problematic. The other part of my dissertation is a description of individual parts of my designed device and also an analysis of designed components´ intension. My thesis includes calculation, for case of realisation. There is also a design of measuring chain, methods of results´ evaluation after measuring with this device and theoretical analysis of measurement´s inaccuracy.
|
|
|
Kinematics and elastokinematics of independent multi-link suspension of axle using flexible supporting elements
Vrána, Tomáš ; Kovanda, Jan (advisor) ; Ladislav, Ladislav (referee)
This thesis deals with elasto-kinematic properties of multi-link rear suspension
system, based on simulations. The creation of computational model and simulation of
elastokinematics are based on specialized modules of the HyperWorks software. The
thesis idea is to create new models and improve their properties.
The chapter introduction presents and discusses the current knowledge state in the
issue of elasto-kinematic characteristics of the vehicle suspension. Previously published
works are presented in this section. The following section defines basic terms, features
and design elements concerning the topic vehicle suspension and vehicle axle, which
can help readers to orientate in this field.
The first part of the thesis is focused on the collection of high-quality input data to
create the MBS computational model based on the real suspension components. The
determination of kinematic suspension points, experimental measurements of inertia
moments of supporting elements of the suspension and measurements of deformation
characteristics of rubber-metal bushings are presented in the thesis. There are also
measuring characteristics of force elements such as springs or shock absorbers. Then the
proposed method of measuring elasto-kinematic characteristics of the suspension using
testing machine for model validation is also introduced.
The second and main part is devoted to creating a new MBS simulation models of
multi-link rear suspension using HyperWorks system. The suspension model is
improved by successive steps, from kinematic model, through model with flexibility of
the bushings, to the complex model in which the flexible properties of all supporting
elements are reflected. The properties of the used models are described together with
arising calculation problems. The results discuss the impact of elements flexibility and
individual structural alternatives on elasto-kinematic characteristics of the suspension
system.
|
|
|
Measurement of the suspension flexibility
Suchý, Jan ; Zháňal, Lubor (referee) ; Porteš, Petr (advisor)
The thesis is focused on the method of determining the position of the wheel using photogrammetric equipment Tritop. Verification of the method is performed by measuring of the Formula Student Dragon II. Measured data are processed by algorithm for calculating compiled in Matlab software. The final section describes a concept the measurement of the suspension flexibility on the UADI device.
|
|
| |
guest ::
