The Mechanical Principles of Engineering and ArchitectureLongman, Brown, Green, and Longmans, 1855 - 675 стор. |
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Сторінка 150
... contact , whatever be its direction , provided only the angle which that direction makes with the perpendicular to the surfaces of contact ... point , then will the pres- sure PQ be sustained by the resistance of the surfaces , however great ...
... contact , whatever be its direction , provided only the angle which that direction makes with the perpendicular to the surfaces of contact ... point , then will the pres- sure PQ be sustained by the resistance of the surfaces , however great ...
Сторінка 152
... contact , but the body to which it is applied will be upon the point of slipping upon the other . The state of the equilibrium of this body is then said to be that BORDER- ING UPON MOTION . If the pressure P admit of being applied in ...
... contact , but the body to which it is applied will be upon the point of slipping upon the other . The state of the equilibrium of this body is then said to be that BORDER- ING UPON MOTION . If the pressure P admit of being applied in ...
Сторінка 153
... contact , is manifestly true of the resultant of any number of such pressures , and of the resultant of any num- ber ... point where they intersect it ) , at an angle equal to the limiting angle of resistance . TABLE I. Friction of Plane ...
... contact , is manifestly true of the resultant of any number of such pressures , and of the resultant of any num- ber ... point where they intersect it ) , at an angle equal to the limiting angle of resistance . TABLE I. Friction of Plane ...
Сторінка 253
... point of contact T. It is evident that the two circles would be made to revolve by the contact of teeth whose edges were of the forms of these two curves mn and m'n ' precisely as they would by their friction upon the circumferences of ...
... point of contact T. It is evident that the two circles would be made to revolve by the contact of teeth whose edges were of the forms of these two curves mn and m'n ' precisely as they would by their friction upon the circumferences of ...
Сторінка 253
... point of contact T of the teeth to the point of contact D of the circumferences should , in every position of the point T , be perpendicular to the surfaces in contact there , i . e . a normal to both the curves mn and m'n ' . To prove ...
... point of contact T of the teeth to the point of contact D of the circumferences should , in every position of the point T , be perpendicular to the surfaces in contact there , i . e . a normal to both the curves mn and m'n ' . To prove ...
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Загальні терміни та фрази
a₁ angle of resistance angular velocity arch axes axis beam body bordering upon motion capstan centre of gravity circumference compression corresponding crank curve cylinder deflexion descend determined dimensions displaced fluid distance ditto driven wheel driving Edition epicycloidal equal equation equilibrium evident exceedingly small extrados force formula friction given hypocycloidal impact inclination inertia intersect involute lamina length limiting angle line of centres line of resistance machine modulus moment of inertia moving numbers of teeth 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 screw space stability Substituting supposed surfaces of contact taken to represent tion tooth U₁ U₂ unguent vertical vis viva viva vols voussoirs W₁ wall weight whence it follows whilst whole
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