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The term tractive effort is often qualified as starting tractive effort, continuous tractive effort and maximum tractive effort.These terms apply to different operating conditions, but are related by common mechanical factors: input torque to the driving wheels, the wheel diameter, coefficient of friction (μ) between the driving wheels and supporting surface, and the weight applied to the ...
Traction can also refer to the maximum tractive force between a body and a surface, as limited by available friction; when this is the case, traction is often expressed as the ratio of the maximum tractive force to the normal force and is termed the coefficient of traction (similar to coefficient of friction).
Laban effort graph with effort elements labeled. Effort, or what Laban sometimes described as dynamics, is a system for understanding the more subtle characteristics about movement with respect to inner intention. The difference between punching someone in anger and reaching for a glass is slight in terms of body organization – both rely on ...
Psychology Today is an American media organization with a focus on psychology and human behavior. The publication began as a bimonthly magazine, which first appeared in 1967. The print magazine's reported circulation is 275,000 as of 2023. [ 2 ]
They could also be operated in simple mode for starting; reduced-pressure steam could be sent straight from the boiler to the front cylinders at low speed, for maximum tractive effort. The calculated tractive effort was 147,200 lb (66,800 kg) in compound, or 176,600 lb (80,100 kg) in simple for the Virginian locomotives. [2]
The heating surface of the boiler was 254.8 square metres (2,743 sq ft), of which 98.5 square metres (1,060 sq ft) were superheated, while the grate area was 4.72 square metres (50.8 sq ft). At a tractive effort of 21,294 kilograms-force (208.82 kN; 46,950 lbf), they were the most powerful steam locomotives built in Romania. [18]
The T-1s were equipped with a trailing truck booster that exerted 15,275 pounds-force (67.95 kN) of tractive effort. The T-1s could haul trains of the same length as an H-7 class 2-8-8-2 at a faster speed.
Drawbar pull is the difference between tractive effort available and tractive effort required to overcome resistance at a specified speed. Drawbar pull data for a vehicle is usually determined by measuring the amount of available tractive force using a dynamometer , and then combining that data with coastdown [ 1 ] data to obtain the available ...