A Practical Treatise on the Strength of Material: Including Their Elasticity and Resistance to ImpactE. & F.N. Spon, 1883 - 525 páginas |
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Otras ediciones - Ver todas
A Practical Treatise on the Strength of Materials: Including Their ... Thomas Box Vista completa - 1893 |
A Practical Treatise on the Strength of Materials: Including Their ... Thomas Box Vista completa - 1893 |
Términos y frases comunes
19 tons annealed apparent strength Barlow Blaenavon boiler bottom flange breadth breaking weight bursting pressure calculated cast iron cent centre compressive strains correction for incipient crushing strain crushing strength cylinder dead load depth dimensions direction double-riveted joints effect ends flat equal error experiment gave experimental Factor of Safety feet long foot long girder girder-work given by Table gives hence Hodgkinson inch diameter inch square inch thick incipient crushing increased length material metal between rivet-holes Modulus Modulus of Elasticity natural number due neutral axis obtain pitch plate-iron practice punched ratio rectangular pillars reduced require resistance riveted joints rope safe load shearing shearing strength single-riveted joints solid plate square inch Staffordshire steel Table 34 tensile strain tensile strength theoretical thickness of plate tons per square transverse strength tube tubular beams weight by flexure wrinkling strain wrought iron
Pasajes populares
Página 239 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Página 483 - ... resistance. To arrive at correct results and to imitate as nearly as possible the strain to which bridges are subjected by the passage of heavy...
Página 102 - ... of what would be required to crush the material, one half only of the strength may be considered as available for resistance to flexure, whilst the other half is employed to resist crushing ; and when, through the shortness of the pillar, the breaking weight is so great as to be nearly equal to the crushing force, we may consider that no part of the strength of the pillar is applied to resist flexure.
Página 206 - B from the edge of that part of the section which is subjected to tension, or from the bottom in the case of a beam supported at both ends and loaded in the usual way. This, it will be observed, is just the reverse of the mode of calculating Cast-iron beams (341).
Página 212 - ... a beam supported at both ends and loaded in the centre. The top and bottom flanges in Fig.
Página 336 - ... and tensile strains combined, so that we cannot determine the value of either alone. It will, therefore, be well to see how far this method agrees with direct experiments on such materials as cast and wrought iron, whose strength and elasticity are known with certainty (600). (638.) We require 1st from a known weight in the centre of a rectangular beam of given dimensions, to find the maximum longitudinal strains, or those at the upper and lower edges of the section. Obviously the strain varies...
Página 342 - We have here taken the load as constant, at whatever point in the length it might be placed, but the safe load increases as it moves from the centre toward the end in inverse ratio of the product of the two parts into which the length is divided by the weight (420), for example with a beam 20 feet long, a weight in the centre divides it into two lengths, each 10 feet, and we have 10 x 10 = 100 : now say Distance of Weight from Centre.
Página 73 - CHAR 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 "@ "A "B "C "D...
Página 210 - In this case the shearing stresses are the same as in a beam supported at both ends and loaded in the centre (see Appendix VIII.) Deflection.
Página 390 - No. 3, and a mixture of iron, composed of Leeswood No. 3 and Glengarnock No. 3, in equal proportions. There were two experiments upon each of the simple irons, and three upon the mixture, and the mean results were afterwards reduced to those of 10 feet and 1 square inch exactly.