Derailment Coefficient Making use of the coupler angle
#61
Posted 27 September 2021 - 08:55 AM
#62
Posted 27 September 2021 - 09:48 AM
Mick Clarke
#63
Posted 27 September 2021 - 10:26 PM
systema, on 27 September 2021 - 05:23 AM, said:
My initial thinking for articulated wagons is to consider them as two cars. The may share a bogie, in which case I suspect that this needs to be proportioned between the two cars.
I am assuming that the plan here is the same for the cars that you are looking at.
OR assumes that a car and its bogies are symmetrical, so it will be interesting to see how it copes with an asymmetrical car.
In this case, I would suggest that you use the following:
ORTSLengthBogieCentre ( 34.8ft )
ORTSLengthCarBody ( 52ft )
ORTSLengthCouplerFace ( 54.3ft ) (Use the coupler pivot points between each car to determine coupler faces.)
ORTSNumberAxles ( 3 )
ORTSNumberBogies ( 2 )
Don't forget to do the fixed wheel bases on the bogies as well.
Then try them in a few different scenarios, and let me know how they go.
#64
Posted 28 September 2021 - 08:20 PM
ORTSWheelFlangeLength - Wheel flange length is defined as the length of flange starting from the beginning of the maximum flange angle to the point where flange angle reduces to 26.6 degrees. - Distance (m, in, ft, etc) - default is m
ORTSMaximumWheelFlangeAngle - Wheel flange angle is defined as the maximum angle of the wheel flange relative to the horizontal axis.- Angle (deg, radians) - default is rad.
#65
Posted 01 October 2021 - 11:03 PM
i) AAR Freight Wheels
ii) APTA Passenger Wheels
This accident report for CN might also be of interest to show that trains can derail on sharp curves if the conditions are right. It demonstrates a string-lining derailment. Railway companies have introduced different means of preventing these types of incidents. Some of these are the correct placement of empty cars in the train, the need for the driver to use smooth train movements and acceleration, etc.
#66
Posted 02 October 2021 - 12:52 AM
Based on the image, I edit it in AutCad and try to record the two data. If you succeed I will publish because it is a UIC recommendation in Europe.
#67
Posted 02 October 2021 - 12:57 AM
It's curious, how parts are called.
Круг катания
Стопорное кольцо
Колёсный центр
Бандаж
Гребень
Поверхность катания
And what are notes?
Interesting, that new bandage has double cone: 1/20&1/40 on its surface.
That gives linear contact spot, decreasing resistance, but increasing friction/adhesion...
#68
Posted 02 October 2021 - 01:17 AM
With the limitations of our current sectional track and our editors, most routes have imperfect track joints,
I am not clever enough to follow all the reasoning in this thread, so please excuse me if actual derailments are not intended.
Rick
#69
Posted 02 October 2021 - 01:21 AM
rickloader, on 02 October 2021 - 01:17 AM, said:
If you refer to this post you will see that your suggestion has already been incorporated in via the wheel climb time.
#70
Posted 02 October 2021 - 02:39 AM
Weter, on 02 October 2021 - 12:57 AM, said:
It's curious, how parts are called.
Круг катания
Стопорное кольцо
Колёсный центр
Бандаж
Гребень
Поверхность катания
And what are notes?
Interesting, that new bandage has double cone: 1/20&1/40 on its surface.
That gives linear contact spot, decreasing resistance, but increasing friction/adhesion...
CONNECTED TRACK VEHICLES
University note