Semi Automated Bicycle Washer

Bicycle cleaner washer mountain bikes bmx hosepipe

ANSYS

Testing had been carried out on the major components of this product to prove its capability to withstand certain forces and furthermore to show and prove how certain design features such as ribbing have allowed this product to cope better under a greater load.

Safety consideration were made when applying forces too this model, a rough average weight of a Downhill Bicycle 14kg (half of which would be mounted in the product at one time 7kg), which are some of the largest in the bicycle family [24] with addition to the average weight of a grown male 83.6kg [25]

Note: The user should never sit on the bicycle whilst the product is functioning. 90kg was tested:

90𝑘𝑔×9.81 = 882.9𝑛

This force is split across the two axles that hold the bicycle wheel in place on this component:

Fig 91 A fixed force was applied to the underside of the component.

The maximum deformation on this model was 4.4414e5 m. The image above however is exaggerated view of the components shape. This shows that the material and design of this shape would withstand much more weight than is intended for
to prove the purpose of the ribbing within the bottom section of this component an identical test was carried out on with it removed.

% increase/ decrease

4.44114e^5 + 1.1656e^6 = 1129.36021911 659.123617417 ÷ 1129.36021911 = 0.584

470.236601695 ÷ 1129.36021911 = 0.416

0.584 − 0.416 = 0.168

Therefore using the ribs within the bottom end of the mould has increased its strength by 16.8%

These are images of the same component without the ribbing showing the max deformation at 1.1656e^6 and its weaker form. The image below shows how without these features the top end of the components bends to the left.

Cost/ Benefit Analysis 39.1

The total tooling cost of this component is £2.75 per unit, and the total volume of plastic used for the ribs around the bottom half of the component is 133,375 cubic millimeters.

Calculations have been made to see whether the extra cost of materials used for the ribs are economically viable for the percentage of strength increase.

Total Volume: 2255969.17 cubic millimeters Volume for Ribs: 133375 cubic millimeters

That value is 5.9% of the total volume.

Therefore

5.9% of the total tooling cost for this component is: £2.75 (see costing)

0.059% ÷ £2.75 = 0.0212

With strength of 16.8% being added to the structure for a cost of £0.21 per unit the feature is beneficial and cost effective.

Left Side of Product

This is another of the major components demonstrated on ANYSYS. This image shows the force of an average man stand on the top surface of the product.

90kg×9.81=882.9n

𝑀𝑎𝑥𝑖𝑚𝑢𝑚 𝐷𝑒𝑓𝑜𝑟𝑚𝑎𝑡𝑖𝑜𝑛 = 1.1589𝑒^ − 6 1.05678 𝑚𝑖𝑙𝑙𝑖𝑚𝑒𝑡𝑟𝑒𝑠

This model shows that the structure would be able to easily cope with a downward force well over its recommended weight intended; therefore this is a design for safety feature.