Copy of project Cruzee ProV wheel by @joshdeetz.
This project is done in order to show the capability of the SimScale platform. In this project, the static stress analysis of two children cycle wheel models (a 5 spoke model and a 3 spoke model) were performed. The main aim was to investigate how the 3 spokes wheel case performs compared to the 5 spoke wheel case.
Polypropylene (PP) was considered as material for both cases. Two main cases were considered, one with 35 kg radial load and the other with 7.5 kg lateral load. Both cases are discussed below. (Note: In both cases the deformation is scaled 1500 times in order to see the difference. This can be done by applying “WarpbyVector” filter with displacement scale factor of 1500).
Before proceeding with the final cases, test analysis were performed using both model in order to get the idea of the required refinement of the mesh (specially on the areas where there are high stresses). Doing this gives a good idea of the required refinement and than based on this analysis the meshes for the final cases were refined. Therefore, well refined second order meshes were made for the further analysis which are discussed below.
Radial load case
First we will discuss the case in which radial load of 35 kg was applied to both wheels. Since this load was applied to the partitioned faces of the geometries, therefore first geometries were modified and required surface partitions were introduced. The figures below show the vonMises stress contour plot for both cases i.e. 5 spokes case (right) and 3 spokes case (left). Clearly the 3 spokes case didn’t offer the required stiffness and therefore deformed a lot compared to the 5 spokes case. Due to large deformation, one can observe high stresses in 3 spokes wheel case specially on the curved regions. Also note that how the 3 spokes wheel is twisted compared to the other one.
Lateral load case
As a second case, lateral load of 7.5 kg was applied to both wheels. The figures below show the vonMises stress contour plot for both cases i.e. 5 spokes case (right) and 3 spokes case (left). Here also 3 spokes wheel deforms extensively providing less stiffness compared to the 5 spokes model. High stresses can be observed in 3 spokes wheel case specially on the curved regions.
Through this analysis it can be deduced that the 3 spokes wheel gives a poor resistance to a specified load. Therefore, it is easily deform able under these conditions. Whereas on the other hand, 5 spokes wheel being much heavier offers more resistance to the applied load.