A drive shaft, driveshaft, driving shaft, tailshaft (Australian English), propeller shaft (prop shaft), or Cardan shaft (after Girolamo Cardano) is a component for transmitting mechanical power and torque and rotation, usually used to connect other components of a drivetrain that cannot be connected directly because of distance or the need to allow for relative movement between them.
As torque carriers, drive shafts are subject to torsion and shear stress, equivalent to the difference between the input torque and the load. They must therefore be strong enough to bear the stress, while avoiding too much additional weight as that would in turn increase their inertia.
To allow for variations in the alignment and distance between the driving and driven components, drive shafts frequently incorporate one or more universal joints, jaw couplings, or rag joints, and sometimes a splined joint or prismatic joint.
I am wandering if acrylic piece of 25mm thickness would be strong enough to be used as shaft walls that has 15kg radial force acting on it. If it's not, what material is the best to be used? For those who don't understand or want to know more, look at my picture.
Homework Statement
Suppose that there is a beam of neutrons with a range of wavelengths. One intends to produce neutrons of single wavelength by the use of neutron mechanical velocity selector.
The question is, if the slot in the disk B (second disk) of the selector lags the slot in the disk...
Hi,
In a small mechanical application i have, i want an electrical motor to drive a spur gear, and from the moment the spur gear encounters resistance (it stops completely), i want the same shaft from the motor to drive a second spur gear (which was NOT spinning at first, it starts spinning...
I hope you all will permit a question from a non-scientist seeking some practical guidance on a vintage table saw restoration.
I have a 1930s era table saw whose 5/8" shaft spins at 4500 rpm inside a porous bronze bearing that is lubricated with SAE 20 oil.
On the motor pulley side of the...
A solid steel shaft is subjected to a torque of 45 KN/m. If the angle of twist is 0.5 degree per meter length of the shaft and the shear stress is not exceed 90 MN/m^2
(I) find the suitable diameter of the shaft . Take C = 80 GN/m^2
(II) Maximum shear strain
we can solve the question by...
Hello everyone!
I am designing a sort of automatic spring gun to use with projectiles the size of normal tennis balls - sort of like a bowling machine.
I have a horizontal spring, attached at one end to a square sheet of metal, and fixed at the other end. The square sheet of metal is...
Homework Statement
I think I did this right, but for some reason I am second guessing myself. I don't need help with the whole question, just this part:
The question says "In this exercise, you will design and analyze a shaft and the bearings for use in a power transmission mechanism. You...
I have designed and built a steam powered turbine that I am trying to get to run a compressor. In order to choose a compressor I've been trying to calculate how much torque my turbine is producing. The only figures i have are...
RPM - found using a tachometer
Combined weight of turbine blade...
A shaft is uniformly accelerated from 10rev/s to 18 rev/s in 4 sec .
The shaft continues to accelerate at this rate for the next 8 sec . Thereafter the shaft rotates with a uniform angular speed . Find the total time to complete 400 rev .
my answer is ...
10...
Homework Statement
Two collars A and B can slide on vertical rods. Collar A and collar B are connected by a cord that passes over a fixed shaft at C. the static friction coefficient of any two contact surfaces is 0.2. the weight of collar B is 10 lb, neglect collar A's weight, determine the...
I need to design a shaft that have a specific torsional load acting on it. I have the safety factor of 2 and have a table of material properties (yield stress, ultimate stress, shear modulus, modulus of elasticity etc.).
I need to find the diameter of the shaft that resist the specifies...
A shaft of a total length L, connected via coupling C to the engine on the left-hand side,
transfers the power P while rotating with n revolutions per second.
A gear with pitch diameter D1 and thickness t1attached to the shaft at the distance Lg from the coupling C is in mesh with the driven...
hi guys
Lets say I have a wheel that is driven by a shaft connected straight to a motor.
Wheel raidus is 0.0762m while shaft raidus is 8mm.
If I know the torque acting on the wheel, say 20Nm , what would be the torque on the shaft?
Thanks
Background: To prevent too much torque having to be transmitted through the gearbox on a gate valve, a shear pin is to be fitted between the hand wheel and the gearbox spindle. When a certain torque is reached the pin should rupture and no torque transmitted. See attachment for reference...
Hi!
My name is Daniel and I'm new to this forum.
I work as a mechanical engineer at a machining workshop in Norway. We are currently producing some steel shafts that require a high level of accuracy.
The shafts are about 1500mm long, and has a diameter of 40mm h6 (+0,000mm, -0,011mm) all...
Hey. This is my first post, I'm a Senior in Mechanical Engineering, I will help others as far as I can.
I'm trying to solve the problem from the picture. The shaft is loaded with 2 transverse loads, 2 moments and 2 torques. The critical point is immediately to the left of "B". The material is...
I would like to attach bearings on a shaft, see: https://www.physicsforums.com/showthread.php?p=3856547#post3856547
Therefore I would like to calculate the axial and radial force on the shaft, so I can select the right bearings.
The picture looks a as following...
I have a shaft, which I would like to rotate 90 degrees to one side and then 90 degrees back to the other side and so forth. How should I attach the bearings to this shaft? I was thinking to do it as shown in this image:
Two slide bearings, one on the top and one on the bottom so the shaft...
Hi,
I would like to ask if there is any website that explains the processes or the principles of how to install Shaft Roll Mills!
It would be so helpful if I can get the step by step installation processes.
Are there any Videos or Books.
Thank you.
Hiya
I was hoping that somebody would be able to help me.
I need to size a shaft coming from a turbocharger spinning at 150,000rpm the shaft needs to transmit 9Nm and 200mm in length, the shear stress of the material is 457MPa.
I need to size the diameter of the shaft and know that it...
Homework Statement
Compute the angle of twist of the free end relative to the fixed end of the steel bar:
200 N*m, 80 x 10^9 GPa (shear modulus of elasticity)
(Length 1: 1.2 m, dia of .040 m on left, length of .4 m dia of .020 m, on right)
Homework Equations
angle =...
Homework Statement
Compute the torsional shear stress and angle of twist in degrees in an aluminum tube, 600 mm long, having an inside diameter of 60 mm and outside diameter of 80 mm when subjected to a steady torque of 4500 N*m. Then specify a suitable aluminum alloy for tube.
Homework...
Homework Statement
An alloy steel shaft has an outside diameter of 100 mm. A central hole of 60 mm diameter is bored in part of its length as shown. Compute the shearing stress in the hollow section if the stress in the solid section is 200 MPa.
Homework Equations
angle = TL/GJ
t = torque
L...
1. Homework Statement
Compute angle of twist of one end relative to other if a torque of 850 lb-in is applied uniformly along the length. Shaft has two flats (not just the 1 pictured!) 1.25 " is measurement across flats.
Homework Equations
J = C r^4
The Attempt at a Solution
I had...
Hi there everyone,
This is my first post here. I'm a musical instrument maker who also dabbles in robotics and electronics as a hobby.
I need some help identifying a mechanical component. It's in two parts, a plastic internally threaded housing and an externally threaded insert that screws...
Homework Statement
A drive shaft tube for a rear wheel drive high-performance sedan requires a lighter weight unit than one made from conventional steel. The requirements are that the applied torque be 814 N-m (600 ft-lbs) the factor of safety be 2 or more and the maximum angular displacement...
I am going to design a half shaft (drive axle) which connects the differential with the wheel hub, the diameter and its material.
And i have some problems with the forces which act on it.
I didn't find any book about this topic, i found only lot of books which talk about shaft design in...
Homework Statement
I'm looking for an equation that i can use to work out the percentage saving in mass gained by using a hollow shaft rather than a solid shaft.
The question is simply that.
I've done research and found a dodgy equation that doesn't work for me, this is below, and I...
Homework Statement
Question
Assuming the torque and maximum shear stress values to be the same for both shafts, determine the size of a suitable soild shaft which could be used instead of the hollow shaft.
Information/Data Known
Firstly, a previous question - A ship's propellar...
I want to figure out critical speed of hollow shaft. When I calculate from equation, critical speed of this shaft is approximately 10000 RPM. But when I start to increase speed of shaft, at ~2500 RPM I see that the critical speed occured. What can I do to increase this critical speed to double...
Homework Statement
A solid drive shaft is connected to an engine by a coupling, which has drive pins located on a pitch circle diameter of 80 mm (Note: the diameter of the pitch circle is greater than the diameter of the drive shaft). If the maximum power output of the engine is 90kW at 5000...
I have attached the design task I have been given and I am unsure as to what to do next! I will explain that which I have done so far and if anyone can point me in the appropriate direction that would be greatly appreciated!
1. I have created a Free body diagram (FBD), and drawn in the unknown...
Homework Statement
Hi, thanks for looking! Appreciate it!
Right, the question is
For a HOLLOW shaft determine, max torque induced, pilot second moment of area, max shear stress at outer edge, and max angle of twist induced in the shaft, with a material modulus of rigidity of 110...
Hi
Shaft A has variable RPM, getting input from some rotating element (say X), ranging from 0 to 2000.
The RPM of X cannot be adjusted or controlled.
A has to transfer the rotation with limiting RPM of upto 400 to Shaft B.
Is there a way to limit the RPM using a mechanism such that at...
[b]1. Hi all. Can anyone please help me find the torque required for rotating a shaft which has two masses 1000 Kg each at 120 Degree angles. Please refer to the attachment for clarity.
Homework Equations
The Attempt at a Solution
Hi there -
I built a small electronic turntable with the following components: 1- Arduino 2- Sparkfun easy stepper driver 3- Stepper motor 4- Servocity set screw hub. 5- Thrust bearing from mcmaster-carr (square turntable, found here http://www.mcmaster.com/#swivel-plates/=eltxix) 6-...
Homework Statement
I am trying to solve 18-10
http://img845.imageshack.us/img845/7287/motorf.jpg
Homework Equations
P = Cω
The Attempt at a Solution
P = Cω
1 HP = 746 w
2.4 HP → 1790.4 w
C = P/ω = 1790.4 w / 40 rad/s
C = 44.76 Nm
I am really stuck with this problem, I...
Homework Statement
A wheel is attached to a fixed shaft, and the system is free to rotate without friction. To measure the moment of inertia of the wheel-shaft system, a tape of negligible mass wrapped around the shaft is pulled with a known constant force F. When a length L of tape has...
Hi guyz,
I need some help in choosing the shaft couplings to connect the motor to the gear and from gear to the wheel.
The motor shaft is 11 mm and the gear shaft is 24 mm. (Max torque 2 Nm, Max speed 70 rpm)
Output of the gear shaft is 32 mm and the wheel shaft is 30 mm. (Max torque...
I recently inherited a cabin that is very close to an old mine. There is an air vent that is constantly (24 hrs) blowing a steady, high volume of air from a 3.5 ft hole. I would like to harness that air. I was thinking about taking a 3 ft diam PVC pipe and affixing it into the shaft, with 4 fans...
Homework Statement
Given a 1.5” output shaft, a 80-90 ksi yield strength.
Neglecting limitations of keys or gear reducer what is the maximum HP that could be transmitted by the 1.5” shaft
Homework Equations
Torque = (63025*H)/n H is HorsePower and n is RPM
Force =...
I am designing a flywheel for train and for that I am performing a shaft and bearing analysis with KiSSsoft.
In KiSSsoft, for analysis of shafts, source of driven and driving have to be given. My flywheel is powered by a hydraulic pump (Hence can use the term "Motor" as "Driving" in...
hello,
I have some trouble understanding the force vector of a loaded pulley shaft:
the pulley is driven by the shaft with a torque T, the pulley on his turn is driving a belt.
because of Newton 3th law there's tension in the belt as shown,
ok, now the question: many books state that the...
Looking to figure out the allowable stress (psi) of a shaft which has two pin holes in it on the transverse axis of the shaft.
tau = allowable stress, psi
T = torque, in-lb
c = distance from center of gravity to extreme fiber
J = polar moment of inertia
D = diameter of the shaft
d =...
Homework Statement
A motor produces 1000kW of power, running at 1500rpm. What is the running speed if it runs at 80% power?
Homework Equations
None that I know of. You can find the torque by the below equation (but again, I don't know how to deal with the 80%)
P = \frac{Tn}{9549}...
Hello,
I have to find the maximum rpm of the shaft that has ring mounted on the shaft with interference fit of 0.002". I want to know at what rpm the ring will come loose from the shaft?
and
If I run the shaft at 7000rpm at 400 degree Celsius, is the interference fit of 002" enough...
Sir,
Should we make both Motor and Alternator on same shaft?
the Motor will run at 12V and it should not consume >2 Amps and tha same time Alternator should produce 220 V 300watts.
Please reply
Hi all,
I'm an EE student and i have least knowledge about working of gears.
I just want to know that if there are two shafts S1 and S2 of same diameter having two gears G1 and G2 mounted on them respectively. The gear ratio is 1:2. And the shaft S1 is connected to a motor which rotates at...
How does the angular velocity change with increase in the mass?
For example : if there is a shaft rotating at 1500 Rpm , then if a disc of 5 kg is fastened , does the angular velocity of the disc will be same as 1500 RPM , and what happens to the RPM if the disc mass is 50Kg.