A study on the effects of a non-Newtonian speed breaker on vehicles and passengers
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ID: 286903
2021
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Abstract
A speed bump is one of the many traffic calming measures to create a safe environment around the speed bump, usually around crossing areas for passengers. The main idea of the speed bump is that once a driver is to approach the speed bump the vehicle must slow down in order to avoid damage to the vehicle, and to avoid unnecessary passenger discomfort as traversing the speed bump at high speeds will cause a very sudden increase in vertical acceleration. However, while the speed bump does its purpose of forcing the vehicle to slow down as it approaches it, the speed bump is also known to cause damage to the underside of the vehicle, especially lower or lowered vehicles, even though the vehicle is already moving at slow speeds effectively “punishing” the driver despite slowing down. This is where the idea of a speed bump that is filled with a Non-Newtonian Fluid came into mind. A Non-Newtonian Fluid is a type of fluid that does not follow the Newtonian Law of Viscosity, wherein its viscosity is dependent on the stress it experiences causing it to either be more “liquid” in form or more “solid”. This “property” of the Non-Newtonian Fluid having a variable viscosity based on stress is desirable in the context of a speed bump that is able to deform based on the speed of the vehicle. The main idea behind the Non-Newtonian Fluid Speed Bump is that if a vehicle were to traverse it slowly, then the Non-Newtonian Fluid would act more like a fluid and “deform” around the shape of the vehicle thus eliminating the risk of damage to it, and when the vehicle were to travel at a high velocity, then the Non-Newtonian Speed bump would suddenly “harden” and become a solid effectively acting like a conventional Speed bump and that would then punish the speeding vehicle. To test the viability of the Non-Newtonian Speed Bump, it was tested via Simulation through CAD, and by testing a physical prototype of the Non-Newtonian Speed Bump. For both testing methods, the Non-Newtonian Speed Bump was compared to a concrete speed bump by having a tester on a bicycle go over the different speed bumps at varying speeds. The data collected from the testing were the vertical acceleration as the vehicle traversed the speed bump, the peak force experienced, and for the simulation testing the “average equivalent strain” and
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| Authors | Santos, Jason Paulo T. |
| Journal | Malay Journal |
| Year | 2021 |
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| Keywords | Keywords not found |
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