. The car wheel; giving the results of a series of investigations . 145,000 Lbs Av Pressure per Sq. la, 123,931 Lbs, Area Sq. In. 150,000 Lbs. Av. Pressure per Sq. In. 124,049 Lb» Area Sq. In. CONTACTS BETWEEN 33-IN. CAST IRON WHEEL AND 100-LB. RAIL. conducted several years ago it was found that thestresses in truck and body bolsters, while a car is inmotion, are from 20 to 50 per cent, more than thestresses due to static loads alone. If this is true for partslocated above the springs, there must certainly be anequal or greater increase at the point of contact be-tween the wheel and
. The car wheel; giving the results of a series of investigations . 145,000 Lbs Av Pressure per Sq. la, 123,931 Lbs, Area Sq. In. 150,000 Lbs. Av. Pressure per Sq. In. 124,049 Lb» Area Sq. In. CONTACTS BETWEEN 33-IN. CAST IRON WHEEL AND 100-LB. RAIL. conducted several years ago it was found that thestresses in truck and body bolsters, while a car is inmotion, are from 20 to 50 per cent, more than thestresses due to static loads alone. If this is true for partslocated above the springs, there must certainly be anequal or greater increase at the point of contact be-tween the wheel and the rail. Then, too, the blowsreceived from passing over low joints or worn frogs,will raise the pressure between the wheel and therail to a point which the tests under static loads haveshown to be excessive. For example, the wheels,under a car of 100,000 lbs. capacity with a 10 percent, overload, carry an approximate static load of18,750 lbs. each. A drop of tV in. is equivalent to ablow of about 97 foot lbs. If the drop is checked bya yield in the rail of thre
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Keywords: ., bookaut, bookcentury1900, bookdecade1900, booksubjectrailroadcars
