The Mechanical Principles of Engineering and ArchitectureJ. Wiley, 1875 - 699 стор. |
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Результати 1-5 із 72
Сторінка xiii
... preceding writers under the name of the curve of equilibrium or the line of pressure . The distance of the line of resistance from the extrados of a structure , at the point where it most nearly approaches it , I have taken as a measure ...
... preceding writers under the name of the curve of equilibrium or the line of pressure . The distance of the line of resistance from the extrados of a structure , at the point where it most nearly approaches it , I have taken as a measure ...
Сторінка 9
... preceding figure ) the pressure R , at whatever point in its direction it be conceived to be applied , may be resolved at that point into two pressures parallel and equal to P , and P ,: similarly , R , may be resolved , at any point in ...
... preceding figure ) the pressure R , at whatever point in its direction it be conceived to be applied , may be resolved at that point into two pressures parallel and equal to P , and P ,: similarly , R , may be resolved , at any point in ...
Сторінка 11
... preceding , towards the direction in which the corresponding pressure acts ) , then the line thus drawn parallel to the last pressure , and representing it in magnitude , will pass through the point from which the polygon commenced ...
... preceding , towards the direction in which the corresponding pressure acts ) , then the line thus drawn parallel to the last pressure , and representing it in magnitude , will pass through the point from which the polygon commenced ...
Сторінка 28
... preceding equation , Kg . = .. Kg = ( BE + DE ) AC sin . = DE.AC. DE sin . , BE . AC . BE sin . □ — .. Kg . ( BE + DE ) = ‡ ( BE ' — DE ” ) , BE - DE BE + DE - = ( BE - DE ) = } ( BE — BF ) = FE . But since HG = } HF , ... KG = } FE ...
... preceding equation , Kg . = .. Kg = ( BE + DE ) AC sin . = DE.AC. DE sin . , BE . AC . BE sin . □ — .. Kg . ( BE + DE ) = ‡ ( BE ' — DE ” ) , BE - DE BE + DE - = ( BE - DE ) = } ( BE — BF ) = FE . But since HG = } HF , ... KG = } FE ...
Сторінка 30
... preceding equations alone . This case occurs when the body is symmetrical about a given line ; its centre of gravity is then manifestly in that line . * 32 . THE CENTRE OF GRAVITY OF A CURVED LINE WHICH LIES WHOLLY IN THE SAME PLANE ...
... preceding equations alone . This case occurs when the body is symmetrical about a given line ; its centre of gravity is then manifestly in that line . * 32 . THE CENTRE OF GRAVITY OF A CURVED LINE WHICH LIES WHOLLY IN THE SAME PLANE ...
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Загальні терміни та фрази
a₁ angle of resistance angular velocity axes axis beam body bordering upon motion centre of gravity circumference co-efficient compression conical surfaces corresponding crank crank arm cubic foot curve cylinder deflexion determined displaced fluid distance ditto driven wheel driving epicycloidal equal equation equilibrium evident exceedingly small extrados forces formula friction given horizontal hypocycloidal inclination inertia intersect involute lamina length limiting angle line of centres line of resistance load machine modulus moment of inertia moving n₁ n₂ neutral line observing obtain oscillation P₁ P₂ parallel passing perpendicular pitch circle plane point of application point of contact portion position radius repre respect resultant revolution revolve rupture space stability Substituting supposed surfaces of contact taken to represent tion tooth U₁ unguent vertical vis viva viva voussoirs wall weight whence it follows whilst whole