. Official proceedings . O DESlGN/^ES STRESSES IN TANGENTIAL GAUCtE LINCS■ n . RAPIAL Fig. 30—Showing Location and Intensity of Compressive and Tensile Stresses Developed in the OUTSIDE Plate of a 725 lb. M. C. B. Wheel Under a Vertical Load of 200,000 Pounds. Temperature stress of the greatest magnitude within the car wheelis produced by the difiference in temperature between tread andImb resulting from brake friction. This difference in tempera- 261. 0 DESIGNATES STRESSES IN TAMGENTIAL. GAUCt LINES 1 -RADIAL Fig. 31—Showing Location and Intensity of Compressive and TensileStres
. Official proceedings . O DESlGN/^ES STRESSES IN TANGENTIAL GAUCtE LINCS■ n . RAPIAL Fig. 30—Showing Location and Intensity of Compressive and Tensile Stresses Developed in the OUTSIDE Plate of a 725 lb. M. C. B. Wheel Under a Vertical Load of 200,000 Pounds. Temperature stress of the greatest magnitude within the car wheelis produced by the difiference in temperature between tread andImb resulting from brake friction. This difference in tempera- 261. 0 DESIGNATES STRESSES IN TAMGENTIAL. GAUCt LINES 1 -RADIAL Fig. 31—Showing Location and Intensity of Compressive and TensileStresses Developed in ^he INSIDE Plate of a 725 lb. M. C. Under a Vertical Load of 200,000 Pounds. ture is a direct function of the lirake shoe pressure, the velocityof the wheel and length of time presstire is applied. A stiid\- into these variahle conditions is prodtictive of muchtiscful information regarding the limitation of wheels andmethods of operating trains that will produce the maximtimeconomy and safety. The first investigation has to do with thecoefficient of friction of hrake shoes at various shoe presstiresand at various velocities. The ]\r. C. B. Association have made vohuninous tests dur-ing the ]jast 20 years to establish the coefficient of friction ofbrake shoes for the ])urpose of determining data with referenceto time required to stojj a car from various velocities. No in-formation is available concerning coefficient of friction, sho
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Keywords: ., bookauthorrailwayc, bookcentury1900, bookdecade1900, bookyear1901
