- #1
ROOT0X57B
- 83
- 7
- Homework Statement
- How does the presence of water on the road influence the emergency braking distance of a car?
- Relevant Equations
- -
Hi there!
First of all, I do not have a clear homework statement or relevant equations to give but I still put this thread in here because it's related to school work and I've previously got a warning for not doing so.
I'm a french student who is going to start his second year after high school in september.
At the end of the year, I will have competitive exams to get into an engineering school.
For this exam, I have some research to present. I work on "How does the presence of water on the road influence the emergency braking distance of a car?".
I would like to have a preferably simple but rather realistic physical model of a tire to simulate a car braking with and without water on the road surface.
My physics teacher told me that with a "solid, undeformable" tire model like I use to do in this thread, I will be way too far from reality and told me to try the Hertzian model, which he told me was quite simple.
Problem is, that the very first hypothesis of the model is that there is only a normal force, thus no friction. This makes me quite skeptical about the relevance of this model. Moreover, after two weeks of research, I haven't seen anyone using it in the context of a moving vehicle.
So do you think this model may fit my needs? Or what other model could I take a look at?
I'm thinking about the JKR model, which seems to be very close to the one of Hertz, but admits friction.
First of all, I do not have a clear homework statement or relevant equations to give but I still put this thread in here because it's related to school work and I've previously got a warning for not doing so.
I'm a french student who is going to start his second year after high school in september.
At the end of the year, I will have competitive exams to get into an engineering school.
For this exam, I have some research to present. I work on "How does the presence of water on the road influence the emergency braking distance of a car?".
I would like to have a preferably simple but rather realistic physical model of a tire to simulate a car braking with and without water on the road surface.
My physics teacher told me that with a "solid, undeformable" tire model like I use to do in this thread, I will be way too far from reality and told me to try the Hertzian model, which he told me was quite simple.
Problem is, that the very first hypothesis of the model is that there is only a normal force, thus no friction. This makes me quite skeptical about the relevance of this model. Moreover, after two weeks of research, I haven't seen anyone using it in the context of a moving vehicle.
So do you think this model may fit my needs? Or what other model could I take a look at?
I'm thinking about the JKR model, which seems to be very close to the one of Hertz, but admits friction.
