Contents
What is sperling ride index?
Sperling’s ride index was used to examine ride quality of both simulation and field test data considering several nonlinear quantities in [8] . Poorer ride quality was seen in vertical direction. Ride Index for Metro Coaches: Experimental Evaluation and Vehicle Dynamics Results.
What is ride comfort index?
Ride comfort refers to human tolerance to vibration exposure over time. Presently, ISO 2631, EN 12,299 and Sperling’s method are the most common evaluation methods for assessing passenger comfort on trains.
What is riding index of ICF coach?
The Following Measures Should Be Given to Maintain Ride Index in ICF coach: by proper checking of primary suspension arrangement : Checking free height &height variation. Telescopic hydraulic dashpot & oil level in it (1.6 liters in modified & 1.4 liters in non-modified).
What is difference between LHB and ICF coaches?
– The LHB coaches can travel at a much higher speed than ICF coaches. The maximum permissible speed for LHB coaches is 160 kmph, while the ICF coaches are permitted to travel at a maximum speed of 110 kmph. – The LHB coaches are 1.7 meters longer than the conventional ICF coaches, which enhances there seating capacity.
What is BOXN wagon?
BOXN-AL. BOXNAL wagons are BOXN wagons with an aluminium body on top of a steel underframe. The aluminium alloy is ‘RDE-40’, also used in the BOBR-AL wagons. These wagons are naturally lighter and allow a higher payload to be carried for the same axle load.
Why do LHB coaches jerk?
The problem of jerks in LHB coaches arises due to Centre Buffer Coupler (CBC) system that is used to join coaches. Draft gear is the equipment that Indian Railways makes use of to connect the couplings to the rolling stock. The new balanced draft gear couplings have high-capacity shock absorbers, hence reducing jerks.
Which is better ICF or LHB?
As compared to the existing conventional coaches, manufactured by the Integral Coach Factory (ICF), LHB coaches are lighter. Moreover, LHB coaches have a higher passenger capacity, air conditioning capacity, and speed compared to conventional rakes.
What is the full form of BOXN?
E.g., BOXN for air-braked BOX wagons, not BOXCN.
How many wagons are in a BOXN?
These wagons number about 731 as of 2006. Some variants 23.5t. Payload (RDSO spec.) BOXN-HS BOXNHS wagons are converted BOXN wagons fitted with CASNUB HS high-speed bogies raising the max.
Why LHB coaches are safe?
The modern LHB train coaches are considered to be safer as well as better than conventional ICF- design train coaches. Unlike ICF-design train coaches, LHB coaches offer a higher carrying capacity, they have higher speed potential, they are also lighter in weight and have increased codal life.
What is BOXN?
Abbreviations used for wagon type code An ‘N’ suffix is for ‘pneumatic’, or air-braked wagons. E.g., BOXN for air-braked BOX wagons, not BOXCN. Almost all the older stock is vacuum-braked.
What is BLC wagon?
Container type wagon”BLC”(type A,type B), 8 –wheeler type on cast steel high speed bogies,with 840 mm tread diameter , 20.32 t tonne wheelsets,cartridge type taper roller bearings with adaptors and 2 stage automatic air brake system these wagons are suitable for transporting of all types of goods in containers (2 nos …
Is there a correlation between ride comfort index and Sperling’s index?
This paper focuses on the comfort index methods, in accordance with UIC Leaflet 513 R and the standard of railway applications ENV 12299, and the ride Sperling’s method, formulated by Sperling. A correlation is drawn between the comfort indices corresponding to the two methods, based on the link between the comfort and the values of these indices.
How are ride comfort indices related to velocity?
The comfort indices derived from the two methods by numerical simulations help with validating the fact that, in general, the velocity influences the vertical ride comfort, and, in particular, the position of the carbody critical points, from the perspective of the ride comfort. Content may be subject to copyright. Abstract.
How is ride comfort measured in railway vehicles?
Ride comfort is a reference point in evaluating the dynamic performance in railway vehicles. There are more methods to assess the ride comfort, depending on the traffic details and the specific needs of a railway administration.
The carbody movement w c ( x, t) comes carbody bending. The bogies have two degrees of free dom: bounce z bi and pitch θ bi, with i = 1, 2. Each bogie has the mass m b and mass moment of inertia J b. The bogie wheelbase is 2 a b, an d the distance between stiffness 2 k xc and a damping constant 2 c xc.