Hey guys,
I working on a bearing design project for a mech. design class. The bearings will be used to support an automotive drive shaft, and I was wondering:
1) if there were any axial (thrust) forces introduced to the shaft by the engine and whether they are negligible or not
2) if...
Homework Statement
N/A
A 250-mm long aluminum tube of 36mm outer diameter and 28mm inner diameter may be closed at both ends by means of single threaded screw on covers of 1.5mm pitch. With one cover screwed on tight, a solid brass rod of 25mm diameter is placed inside the tube and the second...
It has been known that in addition to the electron mass, quantum effects anomalously break conservation of axial charge: \partial_\mu J^\mu_A = 2im\bar\psi\gamma_5\psi-\frac{g^2}{16\pi^2}\epsilon^{\mu\nu\rho\sigma}F_{\mu\nu}F_{\rho\sigma}.
Does anyone know if any experimenter has set up...
Homework Statement
Thin Shell Solenoid
Homework Equations
General Case Formula Found:
http://www.netdenizen.com/emagnet/solenoids/thinsolenoid.htm"
The Attempt at a Solutionplugged in variables and got .00062919475 T
4 other attempts were made using trivial solutions.
Even tried finding...
Homework Statement
A cylindrical steel bar, 20-mm in diameter and 5.0-m in length, is subjected to an axial tensile load of 40-kN applied at the ends of the steel bar. Determine the axial extension, in millimeters, of the steel bar under this loading condition?Homework Equations
E=\sigma/e...
Homework Statement
The truss shown is part of an
airplane’s internal structure.
Determine the axial forces in
members BC, BD, and BE.
Homework Equations
The Attempt at a Solution
Ok I am trying to figure out how or where to divide this truss up and forces to draw when I do. I...
Homework Statement
The book I am reading just randomly states that the axial velocity for a fully developed laminar flow in a pipe is vx=2*u*(1-r^2/ro^2). i am not sure where this comes from. does come from the navier stokes equations?
also, is there a book that lists other types of axial...
in the following question, i am dealing with steel which is assumed to be have elasto-plactic behaviour,- its stress strain graph will be linear to the yield stress with a slope of "E" and then linear with a slope of zero.
i calculated and drew the P(delta) graphs for the 2 steel types...
Hey guys and gals! first time poster so be gentle...I'm wanting to make a small jet turbine from scratch but I am totally baffled by how to design the compressor and turbine stages for compressing the air and extracting power from the exhaust gas to drive the compressor.
i would ideally like a...
hi guyz,
I have Turbiine(5500RPM)-Gearbox(output 1500RM)-Generator-Exciter-Permanent Magnetiic Generator(PMG).
I have problem with high axial vibration at ball bearing permanent magnetic generator.
Axial vibration at 5500RPM, but it rotate at 1500RPM. This overall is 3-5 times radial...
Hello,
I would be grateful if someone could comment on my problem.
I am trying to simulate diffraction of optical wavelength on a sub-wavelength aperture (aperture diameter/wavelength < 0.1).
What I want to achieve is:
- simulate a geometrical model with an aperture of 15um diameter
-...
Homework Statement
A steel pipe..has a diameter of 116mm...length of 1.8m...and wall thickness of 8mm...gets pounded down by an axial compressive load of 180kN... Let's say that E (the elasticity) = 200GPa...and V(the poisson's ratio) is 0.3... i need to work out the CHANGE IN WALL THICKNESS...
Hi
Im trying to help a friend of mine out with this problem he has in a solid mechanics class he is taking, but it has been awhile since I took that course so i was hoping you guys could help me help him :)
Here is the problem he gave me.
in that image p1 p2 and E1 E2 are the...
What is the difference between axial tilt and inclination? I know that axial tilt is the angle between the perpendicular to the elliptical plane and the north pole with the right time of year facing the sun. I guess the Inclination to the Sun's Equator is self explanatory. The other two I...
Hey everybody,
I am about to make some simplistic fan analysis for a hubbed axial flow fan (Single stage). What makes me confused is if I should use the classical "one stage" approach for compressor design or if there is another way to do this?! My aim is to carry out a simplistic analysis of...
Hi,
I have a question from an engineering science assignment that I'm stuck on.
1. Select the lightest wide flange section that can be used as a steel column 7 m long tosupport an axial load of 450 kN with a factor of safety of 3. Use 200 MPa as the limit of elasticity, 200 GPa as the...
Homework Statement
I have to show that the vector current \vec{V}^\mu = \overline{\psi} \gamma^\mu \vec{T} \psi and the vector axial current \vec{A}^\mu = \overline{\psi} \gamma^\mu \gamma_5\vec{T} \psi satisfy this
\partial_\mu \vec{V}^\mu = i\overline{\psi}[M,\vec{T}] \psi...
Homework Statement
Find the allowable axial compressive load for a 3in by 2in by .25in 17 S-T aluminum-alloy angle 43in long. It acts as a pin-ended column.
Assume: Factor of safety = 2.5
Least radius of gyration, r = .43
Area = 1.19 in^2
Homework Equations
17 S-T gives modulus of...
Right, I am in the process of designing an axial piston pump.
I have obtained the following formula from a textbook for power output. unfortunately i don't know what units the formula requires, is anyone able to confirm what they are? Also, if anyone knows of a good resource for pump design...
Homework Statement
I'm working my way through Quantum Field Theory in a Nutshell by A. Zee. I'm religiously doing the exercises but since I'm doing it on my own (I'm not in school) I have no one to ask when I get stuck. Any hints would be appreciated.
The problem is IV.7.5, on page 253 of...
1. An Aluminum bar has the dimensions given in the attachment. if the allowable stress is 200MPa, determine the maximum axial force P allow that can be carried by the bar.
See attachment for the drawing
2. allowable stress=P/A, E=deformation/L, allowable stress=L/E
3. I attempted...
Obviously we all know the sun generally rises in the east and sets in the west. But due to axial tilt, it is only really due east and due west at the equinoxes. At other times of the year, the sunrise will be somewhat north of east or south of east (and likewise for the sunset, but let's focus...
Homework Statement
Without the 20 Kg block there is a gap of 1.5mm between B and E. The AISI 430 annealed stainless steel cable only deforms elastically. Neglect the weight of the cable and the bar. Diameter of the wire = 2 mm
a) Find the placement of the block to reduce the gap to zero...
It is often said that fermions are protected from large mass corrections by chiral symmetry. My question is does the axial anomaly generate corrections to fermion masses, and if so, doesn't this ruin the protection afforded by chiral symmetry to some extent?
Thanks,
Ben
Hello,
does anyone know why for a shaft with 2 bearings A and B, why is it not good engineering practice for both bearings to support axial and radial loads? while it is better if one supports axial and radial loads while the other bearing only support radial loads.
I was looking for information on axial play on a rotating assembly.More specifically a centrifugal chiller although any information would be good
I need information on end play, and why it is needed, why this axial force is created,etc.
Any help or links is appreciated
Hi all,
I have a problem with respect to axial strain.As far as I know the axial strain is calculated by using the formula given below.
Strain=(L-Lo)/Lo
where Lo : Orginal length and L : current length.
However, another formula is written in one of the program manuals I have been...
Homework Statement
Hello,
This is more of a conceptual question rather than a problem with numbers.
I was wondering if anyone new if there is a relationship between axial, tortional and pendulum vibration. The context is a mass hanging off a spring.
ie will the natural frequency of...
Hi, i just completed my paper looking the posibility that neutrinos feel an additional force
added to the standard model. The force is based upon U(1) just like the electromagnetic
force, but left and right handed particles have opposite charges. The paper is available
below, and at my web...
I've got a sectional area of a beam that is subjected to an axial force N = -100 and momenst M(y) = -50 kNm and M(z)= - 120 kNm. I've found the centroid and the second moment of area around both axes.
How can I compute the maximum axial stress?
Here's the section...
Please give me some guidance on this problem. I can attach the figure if it will help.
The assembly shown in the figure consists of an aluminum tube AB having a cross sectional area of 400mm2. A steel rod having a diameter of 10 mm is attached to a rigid collar and passes through the tube. If...
Hello everyone
I study mechanics of materials, curently stress and strain. I don't understand how to figure out those axial forces in specific fields of mechanic construction.
Picture 1 - Construction 1: http://img.photobucket.com/albums/v309/Andreii/P9150003.jpg"
Picture 2 - Construction...
Hi, I have the following question to complete and i was wondering if anyone can help..
Compare the slenderness ratio and maximum safe axial load that a universal column of section 152 x 152 x 37 can carry if it is made from grade 43 steel to BS5950; 1985 and 6.5m in height when its ends are...
is it possible to focus an axial ray through a double plano piece of glass placed in air?
i don't think so because the glass will not reflect the ray towards the optical axis for the ray to focus in. is this thinking correct?
My statics text says the following:
The relationship between axial stress and strain can be represented by the equation
\sigma = E\epsilon
"At higher levels of stress, the following nonlinear equation may be a better fit to describe the correlation between axial stress and strain:
\sigma...
Since the archive didnt have an answer or these keywords, is there any way to detect a magnet spinning on its axis so the magnetic field is rotating axially and lines of flux are rotating around but nowhere in space is the flux level changing? I've heard rummors over the years. This is not the...
Hi! Just discovered this forum, and it's like the best ever! Anyway, I do have a question. In statics I hear about an "axial member" of a structure. This means that the force in this member works along the rod or wire or whatever, so that the direction of the force need not to be determined...