two cylinders are connected to form a parallel cylinder actuating system. Assume the bore and rod diameters of the left cylinder are 120 mm and 60 mm, respectively, and that those of the right cylinder are 100 mm and 50 mm. If the mass of the external loads to be driven by the left and right cylinders are 750 and 500 kg, respectively, and the back pressure in both rod-end chambers is 200 kPa, calculate the operating pressure of each cylinder for driving the loads. (Assume that the left cylinder requires 550 kPa for no-load extension and the right one requires 500 kPa.) If the supplying flow is 150 L ・ min−1, what are the extending velocities of those cylinders? Consider the friction and back pressure for the design Will those two cylinders extend simultaneously under the stated condition

two cylinders are connected to form a parallel cylinder actuating system. Assume the bore and rod diameters of the left cylinder are 120 mm and 60 mm, respectively, and that those of the right cylinder are 100 mm and 50 mm. If the mass of the external loads to be driven by the left and right cylinders are 750 and 500 kg, respectively, and the back pressure in both rod-end chambers is 200 kPa, calculate the operating pressure of each cylinder for driving the loads. (Assume that the left cylinder requires 550 kPa for no-load extension and the right one requires 500 kPa.) If the supplying flow is 150 L ・ min−1, what are the extending velocities of those cylinders? Consider the friction and back pressure for the design Will those two cylinders extend simultaneously under the stated condition

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.70P: Solve Sample Problem 7.16 if the contact pressure under the polisher varies parabolically from p0 at...

See similar textbooks

Related questions

Q: a b c d h 82 mm 139 mm 39 mm 18 mm 33 mm Clamps like the one shown are commonly…

Q: 5. A plate clutch consists of a flat driven plate gripped between a driving plate and presser plate…

Q: M, M2 R friction The figure above illustrates a system comprising a rigid support structure having a…

A: Given Two blocks of mass M1 & M2 are tied to the rope and placed over a wedge Left side of the…

Q: The semi-angle of the cone is 15°. The coefficient of friction is 0.3. Find the torque required to…

A: Cone clutch is mainly used in automobiles. Cone clutch has only one pair of friction surface. In…

Q: For the same question, the Impeller hub will be pressed onto the taper shaft with the Nut. How much…

A: given data; ⇒engine power(P)=27kw =27*103w⇒speed (n)=1684rpm⇒conical…

Q: Member ABC is controlled using a rack and pinion, which is connected at B. (The rack is the long,…

Concept explainers

Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

two cylinders are connected to form a parallel cylinder actuating
system. Assume the bore and rod diameters of the left cylinder are 120 mm and 60 mm, respectively, and
that those of the right cylinder are 100 mm and 50 mm. If the mass of the external loads to be driven by the
left and right cylinders are 750 and 500 kg, respectively, and the back pressure in both rod-end chambers
is 200 kPa, calculate the operating pressure of each cylinder for driving the loads. (Assume that the left
cylinder requires 550 kPa for no-load extension and the right one requires 500 kPa.) If the supplying flow
is 150 L ・ min−1, what are the extending velocities of those cylinders? Consider the friction and back pressure for the design Will those two cylinders extend simultaneously under the stated condition

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step by step

Solved in 4 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.

Similar questions

A 1" diameter line shaft, which is supported by frictionless pulleys at the ends, carries 2 pulleys. The 10" diameter driver pulley is driven in a counter-clockwise direction, and its belt tensions are 25 lbs and 56 lbs. The 2" diameter driven pulley has one of its belt tensions measured at 30 lbs. Calculate the missing belt tension.
Power is transmitted between two shafts by a V-belt whose mass is 0.9 kg/m length. The maximum permissible tension in the belt is limited to 2.2 kN. The angle of lap is 170° and the groove angle 45°. If the coefficient of friction between the belt and pulleys is 0.17, find : 1. velocity of the belt for maximum power; and 2. power transmitted at this velocity. Note: Sketch the belt drive system for both parts and label the given data on it.
4. A machine shaft turning at 600 rpm is supported on bearings 30" apart. Twenty HP is supplied to the shaft through an 18" pulley located 10" to the right of the right bearing. The power is transmitted from the shaft through an 8" spur gear located 10" to the right of the left bearing. The pulley weighs 200 lb to provide some flywheel effect. The forces acting on the pulley and the gear are given in the diagram. The shaft material selected has an ultimate strength of 70,000 psi and a yield stress of 46,000 psi, determine: Reactions at the bearings b. Bending moment diagrams in the horizontal and vertical directions a. The necessary diameter in accordance with the ASME Code using Kh=1.5 and Kt = 1.0. points) с. Pulley Mt 525 lb Gear 191 lb Mt Forces on Gear 10" 20" 10" 348 lb W-200 lb 116 lb
4. A plate clutch has three discs on the driving shaft and two discs on the driven shaft, providing four pairs of contact surfaces. The outside diameter of the contact surfaces is 240 mm and inside diameter 120 mm. Assuming uniform pressure and f = 0.3, find the total spring load pressing the plates to transmit 25 kW at 1575 rpm. If there are 6 springs each of the contact surfaces has worn away by 1.25 mm, find the maximum power that can be transmitted, assuming uniform wear.
5. For the engine-transmission-propeller problem shown below, The engine generates a torque of 219lb-ft, and it is bolted to a frame at locations A and B. The transmission reverses the rotation direction. The transmission ratio is 1.5 (i.e. the propeller speed is -1/1.5 the engine speed, the minus sign indicates the change in direction). d. Sketch the free body diagram. Be sure to show the torques at the input and outputs to the different components. Note the change in the rotation direction between the engine and shaft. e. Solve for the reaction forces at the bolt supports of the engine, if the distance between them is 1 ft. Propeller Engine Reduction ratio 1.5 Engine is attached B
The motor shown operates at constant speed and develops a torque of 100 lb-in during normal operation. Attached to the motor shaft is a gear reducer of ratio 5:1, that is, the reducer output shaft rotates in the same direction as the motor but at one-fifth motor speed. Rotation of the reducer housing is prevented by the "torque arm" pin-connected at each end as shown. The reducer output shaft drives the load through a flexible coupling. Neglecting gravity and friction, what loads are applied to (a) the torque arm, (b) the motor output shaft, and (c) the reducer output shaft? Motor Gear reducer Flexible coupling (To load) Torque arm- Torque arm Reducer output shaft Motor Reducer Shaft rotation
Problem 8 Another Gear Two disks are connected to one another with a belt as shown. Both disks have mass m but the larger one has radius 4R and the smaller has radius R. The larger disk is powered by a motor that produces a constant torque, To, in the counter- clockwise direction. (a) By using the rotational equivalent of Newton's laws on the larger disk show that the difference in the tension at the top with the tension at the bottom is: Tto - Thot 1 4R (TO - 2m Ra), where a is the linear accleration of the elt. (b) Do the same (find Ttop - Tbot) with the smaller disk. (c) Use your two expressions to find the gular acceleration of the smaller disk. You answer should have m, R, and To in it only. (Careful, the sr aller disk does not have the same angular acceleration as the larger one).
A pulley 500 mm diameter is driven at 375 rev/min by a belt 200 mm wide by 12 mm thick. The tension in the tight side of the belt is three times the tension in the slack side. Calculate the maximum power that can be transmitted if the stress in the belt is not to exceed 400 kN/m2, neglecting the stress set up in the belt due to centrifugal force.
2. A machine shaft turning at 600 rpm is supported on bearings 20" apart. Twenty HP is supplied to the shaft through a 20" pulley located 10" to the right of the right bearing. The power is transmitted from the shaft through an 8" spur gear located at the middle of the two bearing. The pulley weighs 300 lb to provide some flywheel effect. The forces acting on the pulley and the gear are given in the diagram. The shaft material selected has an ultimate strength of 70,000 psi and a yield stress of 46,000 psi, determine: Reactions at the bearings b. Bending moment diagrams in the horizontal and vertical directions а. C. The necessary diameter in accordance with the ASME Code using Kb =1.5 and Kt = 1.5. %3D Pulley Mt 525 lb Gear 191 lb Mt 10" 10" 10" Forces on Gear 348 lb W=300 lb 116 lb
Clutch Mechanism 8. In the clutch mechanism shown, two flat circular disks of radius R are mounted so that they can be brought into contact causing a net frictional force. The contact pressure in general depends on the distance from the center and in one specific case may be modeled buy P(r) = Poe-kr, where k is a constant and r is the distance from the center of the discs. The integral cR F = 2m " P(r)rdr gives the total contact force between the discs. Cross-section a. In your own words explain where this formula comes from.
1. Packages are fed in by means of a gravity roller conveyor X and are lifted by cylinder 1A. Cylinder 2A then ejects the packages onto roller conveyor Y for further transport. Following this, the two double acting cylinders return to their initial positions simultaneously. These working operations are illustrated in Figure below. Draw complete step diagram of the system and design a complete electro-pneumatic for the system. 2A 1A
2. A 75 kW induction motor runs at 740 rpm in clockwise direction. A 19 tooth helical pinion with20 degree normal pressure angle, 10 mm normal module and a helix angle of 23 degree is keyed to the motor shaft. Draw a 3-dimensional sketch of the motor shaft and the pinion. Show the forces acting on the pinion and the bearing at A and B. The thrust should be taken out at A All dimensions are in mm y 750 B 200 Z2=38 Z₁ = 19 X