Mobility and Vehicle Mechanics

1-18

Authors: Tarun Kumar, Roger Stephen, Mohammad Zaeimi, Greg Wheatley

The purpose of this report is to investigate the design development and evaluate the structural and functional performance of the proposed system for the 2019 competition. With the review of the literature surrounding rear suspension systems, FSAE standards, analysis techniques and important design parameters, the foundation for the proposed James Cook University (JCU) 2019 rear suspension system is established. This paper is highlighted the development and analysis path undertaken in the construction of rear suspension system befitting a Formula SAE vehicle. Formula SAE is an international student competition centered on the design, construction and racing of an internal combustion vehicle. All parts are designed via SolidWorks and FEA testing is incorporated using ANSYS to test out various loads under different scenarios in racing. Main components including beam axle, trailing arms, brackets, spring and damper are covered in this paper. The design is focused on providing a low cost and easy to manufacture design which operate for infinite life cycles.

33-43

Authors: Saša Milojević, Ivan Miletić, Blaža Stojanović, Ivana Milojević, Marko Miletić

Increase in number of transport vehicles, especially motor vehicles, has negative impact on environment. It refers to air pollution problem due to usage (combustion) of fossil fuels in motor vehicles. Agriculture activities, factories, industry and many other activities additionally contributes to air pollution. Greenhouse gas emission is main cause of global warming and air pollution, and mainly occurs due to industry and transport. In many countries, the adoption of legislation gives priority to the use of electric vehicles due to lower emissions compared to conventionally powered vehicles (diesel or gasoline engines). In this way, goals have been set in the European Union and regulations have been passed which, among other things, require a certain percentage of motor vehicle recycling at the end of their service life. The Directive 2000/53/EC of the European Parliament and of the Council regulates waste management in the vehicle sector. Due to the increased number of electric vehicles, which participate in the transport of goods and people, the paper partially analyzes the problem related to the adaptation of existing recycling centers (for classic vehicles), for the needs of recycling electric vehicles and their specific parts and equipment (such as magnets and electric motors).

55-61

Authors: Mobin Majeed, Greg Wheatley

The aim of this paper is to design the steering system of the formula racing car. This includes the designing of its main components in solidworks, its analysis by calculation and finite element simulation. Load acting on the wheels of formula car are calculated and input in the analysis wherever necessary. The cars steering rack is repositioned to avoid any collision with a-arms. The force acting on the bolts at tie rod, clevis and mounting bracket is found below its yield strength. The clevis attached at the end of the rack is subject to load and fatigue analysis in ANSYS and all results were found satisfactory. Similar analysis is done for rack arm at critical areas and its was found that region where the rack arm can withstand fluctuations ranging for almost whole life till failure. Later the whole steering system was split into three major components (Steering column assembly, steering rack assembly, Tie rod assemblies) and each component is designed separately in SolidWorks and then assembled into whole one. SKF SAKAC 10 M ends are selected rod ends for steering arm assembly allowing rigid force transfer between rack arms and upright assembly as well as vertical motion of wheel assembly in operation. In the assembly 6 x M8 and 4 x M10 exist with the associated washers and nuts. The universal joint connecting the two steering column was machined according to Australian standards with splines at both ends. Two splined steering columns was machined in order to complete the steering column assembly. In order to stop the clevis colliding with the steering with the rack on full lock and to restrict the steering of the vehicle two locking collars were manufactured.