A Manual of Applied MechanicsGriffin, 1877 - 652 من الصفحات |
المحتوى
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طبعات أخرى - عرض جميع المقتطفات
عبارات ومصطلحات مألوفة
abutment angle angle of repose angular velocity applied Article axes balanced bars beam body centre of gravity centre of pressure centre of resistance co-efficient co-ordinates component conjugate pressure cord cos² cotan couple curve denote depth diagonal diameter direction distance elasticity ellipse equal and opposite equation equilibrium extrados figure fluid formula frame friction geostatic girder given horizontal hydrostatic arch inclination intensity joint length line of action linear arch lines of resistance masonry moment of inertia motion neutral axis normal oblique P₁ P₂ pair parallel forces parallel projection perpendicular plane of section polygon position principles prism proportional radius radius of curvature ratio rectangular represent respectively resultant rotation shearing shearing stress solid spandril specific gravity stability straight line strain structure surface tangent tenacity tension THEOREM thrust tion traversing uniform velocity wall weight Λ Λ Λ
مقاطع مشهورة
الصفحة 5 - If the engineer, who has* to lift a great mass of real granite by the instrumentality of real timber and real hemp, should absolutely rely on the propositions which he finds in treatises on Dynamics, and should make no allowance for the imperfection of his materials," his whole apparatus of beams, wheels, and ropes would soon come down in ruin, and, with all his geometrical skill, he would be found a far inferior builder to those painted barbarians who, though they never heard of the parallelogram...
الصفحة 516 - ... of those parts into the square of the distance of its centre of gravity from the axis, adding the products together, and finding the value towards which their sum converges when the size of the small parts is indefinitely diminished.
الصفحة 68 - The word STRESS has been adopted as a general term to comprehend various forces which are exerted between contiguous bodies, or parts of bodies, and which are distributed over the surface of contact of the masses between which they act.
الصفحة 264 - V p, v \1 + sin $/' j> being the angle of repose. If the earth is firm, and .little liable to be disturbed, the proportion of the half-span, or horizontal semi-axis, to the rise, or vertical semi-axis, may be made greater than is given by the preceding equation, and the earth will still resist the additional horizontal thrust; but that proportion should never be made less than the value given by the equation, or the sides of the archway will be in danger of being forced inwards.
الصفحة 15 - Force is an action between two bodies, either causing or tending to cause change in their relative rest or motion.
الصفحة 597 - F. = = ; .................. (5.) being equal to the weight of a column of fluid whose base is the sectional area of the jet, and its height four times the height due to the velocity.