Deceleration profile duing wheelslip conditions

[JamesG]

I'm an engineering student currently working on modelling train braking during wheel slip conditions. I've been developing a model for braking with different configurations of wheel slip protection.

I would like to verify my model with real world data. Does anyone know if it would be possible to obtain deceleration profiles for trains stopping under wheel slip conditions, ideally with the times of events such as braking level changes and WSP activations?

 

[pendolino]

I'm an engineering student currently working on modelling train braking during wheel slip conditions. I've been developing a model for braking with different configurations of wheel slip protection.

I would like to verify my model with real world data. Does anyone know if it would be possible to obtain deceleration profiles for trains stopping under wheel slip conditions, ideally with the times of events such as braking level changes and WSP activations?

You could approach a TOC and ask them for a download from an OTDR? That would record brake applications and (I think) WSP. But if all the wheels are slipping (which admittedly is probably unlikely) then the speed registered by the OTDR might not be entirely accurate.

 

[asylumxl]

I'd recommend contacting the train manufactures instead of the TOCs, who will have probably done such tests during testing.

 

[TDK]

I'm an engineering student currently working on modelling train braking during wheel slip conditions. I've been developing a model for braking with different configurations of wheel slip protection.

I would like to verify my model with real world data. Does anyone know if it would be possible to obtain deceleration profiles for trains stopping under wheel slip conditions, ideally with the times of events such as braking level changes and WSP activations?

Conditions are so variable that you will find it difficult to get any constant measure

 

[David]

A good place to start is the Rail Accident Investigation Branch, in particular the publications involving near misses and over runs.

As TDK mentioned, conditions are variable, but another thing to consider is the different reasons. Not all over runs and near misses are caused by poor railhead conditions.