EMS5CAE: Computer Aided Engineering ANSYS - Manufacturing - Engineering Assessment Answer

Subject Code: EMS5CAE

Engineering Assessment Answer

Assignment Task: Analysis of an R C Automotive Suspension Setup Outline Automotive components can be exposed to multiple loading conditions as well as having to operate in – and withstand harsh environments. With the increases in competition between various organisations, there is an ever-growing pressure to deliver changes in design requirements within small time frames. However, the nature of this competitive environment also requires designs to withstand expected conditions and meet minimum service life requirements, therefore placing a high demand on engineering teams to apply computer-aided engineering tools to analyse the effects of different conditions and designs before constructing physical prototypes for experimental testing. Double wishbone suspension systems are common automotive components, even used on smaller scale RC models. Not only does a double wishbone suspension system consist of multiple parts, but also a range of connection types and damping mechanisms. Many factors need to be considered when designing components with such these complex assemblies. These include; cost, design life, loads, deflections, dynamic behaviour, material etc. – all of which have to be analysed to ensure the safety and reliability of the assembly. For the RC suspension system considered in this task, the main boundary conditions consist of:

• Directional forces caused by the steering
• Moments that are the result of loading and support conditions
• The effect of spring stiffness on the system
• The effect of different joint conditions

Objectives The aim of this project is to conduct a finite element based on structural, modal and harmonic response analysis of an RC double wishbone suspension system. The system and each component in the assembly must be scoped and investigated for the given boundary conditions and spring stiffness. You will need to perform a mesh convergence study and show a plot of element size (side length) vs max principle stress in the region of interest. Each student is assigned a length for the front lower arm and spring stiffness that you are to use, meaning each student must adjust the geometry and model.

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