Axial Definition and 195 Threads

Homework Statement The first theory shows a spring under an axial load where the Torque is given as WRcos(a) The second theory shows a spring under axial Torque. T is given as Wsin(a) Homework Equations Given in links The Attempt at a Solution A torque T would be at full strength along...

I am currently studying optical microscope and discover that the axial resolution is limited as r(z) = 2pi / (NA)^2. However, while I got hints that it is due to the Rayleigh's limit, I can't derivative the equation using numerical method. It would be huge thanks if anyone can help me on the...

Homework Statement 2. Homework Equations F-number is f/d x0 = 1.2λ(fnumber) The Attempt at a Solution [/B] Fnumber1 = 0.2 Fnumber2 = 0.6 x01 = 180nm x02 = 540nmThese values seem large for depth resolution, is this correct?

Hi, We have an axial fan in the lab that apparently vibrates badly ("wobbles") at certain frequencies. To find the resonance and the bad frequencies, I decided to do an ANSYS modal analysis. I am still pretty new to it, and have a few questions. 1) Regardless of how many modes I pick...

Hi the image below taken from http://www.gammex.com/ace-files/manuals/411LE_Users_Guide.pdf shows an ultrasound axial resolution phantom. I do not understand why the black dots on the phantom are stretched up-and-down in the ultrasound image. I do understand though why they get wider. Please...

I want to design a wind toubine ,I know the wnd vel,I need certain amount of power ..How to design it and how to calculate at which rpm will it rotate to deliver my required power?

Hello folks! New to this forum, so hoping I'm not retreading old ground. The Pauli matrices are spin angular momentum operators in quantum mechanics and thus are axial vectors. But in Clifford algebra in three dimensions they are odd basis elements and thus polar vectors. Hestenes, Baylis, other...

Hi i was wondering if a cylinder has hoop stresses, radial stresses and axial stress would that be multiaxial stresses? Thank you

Hi, in an axial flux generator if the flux passing through any of the coils at any given time constant is in the same direction , can all the separate coils be connected in series as to create a single phase output? in permanent magnet rotor this would mean that the rotor disc facing from one...

Homework Statement A 100 kN load is applied to a flange positioned midway (at B) along a 50 mm diameter steel bar (ABC). The bar is placed between two rigid supports and is thus constrained. Determine the position of the flange (distance from the left support) if the temperature of the bar...

Hi, sorry for the title. I struggled to accurately describe my question in a short sentence. I'm trying to understand if there would be a holding torque or not in the following scenario. I'm referring to a motor which has a central stator and two permanent magnet rotor plates on either side...

Homework Statement http://prntscr.com/7rw2hj Homework Equations deformation = PL/AE A= pi/4 (d^2) The Attempt at a Solution The displacement of the shaft is equal to the summation of the displacement of each individual piece. I started on end A, and got the internal force to be 6kips then...

Homework Statement Hello, I am trying to model an arm mounted perpendicular to the straight mechanical column. An arm can be translated in horizontal direction by a gear which engages with the bottom of an arm such that it applies no force in vertical direction to the arm. And finally there is...

Hello I tried to calculate the minimum force needed to apply on the knuckle to make a turn. The important factor is the normal load (due to the weight of the vehicle) when the vehicle is not moving. I know the kingpin angle, scrub radius, knuckle arm, caster. But I am not sure how to proceed...

I am working on a case where a spring foce is applied to the center of wheel . the wheel is pulled by a motor with a rope tied on the wheel. I know the spring force in the centere of the wheel. how can i know the centripetla force exerted by it

Homework Statement I need some help converting and rearranging the first formula to get the next formulas? As I need this for further reference, for a future assignment! Not homework![/B] Homework Equations Attached as thumbnails

Homework Statement [/B] Thermodynamics problem Air enters a compressor at a temperature of 290 Kelvin and pressure 100 kPa with a stable volume flow of 2.5 m^3/s. The output temperature of the compressor is is 400 Kelvin and the velocity of the flow is 30 m/s. Air is implied to be an ideal gas...

Linear Power calculation in core Axial layers from core average linear power, Axial form factor and Radial form factor: I want to do coupled neutronic thermal-hydraulic analysis using COBRA and PANTHER. From PANTHER, we can get Axial form factor (AFF) and Radial form factor (RFF) in each axial...

"Axial Seamount (also Coaxial Seamount or Axial Volcano) is a seamount and submarine volcano located on the Juan de Fuca Ridge, approximately 480 km (298 mi) west of Cannon Beach, Oregon." http://en.wikipedia.org/wiki/Axial_Seamount http://www.pmel.noaa.gov/eoi/axial_site.html Researchers...

Consider the following; We have Earth with two moons in orbit (discounting the existence of our own moon for the sake of this hypothetical scenario). One moon is the size and mass of Pluto, orbiting around 70,000km from Earth. The other is the size and mass of Pluto's moon, Charon, orbiting...

Hello, I've got one problem with fluid flow reaction force which acts on compressor. I hope you can help me with that. Here is a sketch to my question: I wonder in which direction resultant force will be directed. I understand that air is flowing from left to right with inlet velocity V1...

Homework Statement The rigid bar AC is supported by two axial bars (1) and (2). Both axial bars are made of bronze [E = 100 GPa; α = 18 × 10−6 mm/mm/°C]. The cross-sectional area of bar (1) is A1= 211 mm2 and the cross-sectional area of bar (2) is A2 = 303 mm2. After load P has been applied and...

Homework Statement I was able to come up with an answer but I am not sure if its right. I get the value of 3.668 in for diameter and my friend gets 2.117 in. I get that value because I subtracted 1500 lb from 6000lb to get my force while he used 6000lb as his Force Who is right and why? Thank...

hi, could you tell me how to calculate the axial force (along the axis of the bat) on the bat, when the ball hits with some angle with respect to the bat longitudinal axis. The normal force on the bat I've calculated based on the impulse momentum equation. I'm interested i calculating...

Hi all, Just a quick question about control of axial flux synchronous machine. Does it follow more or less the same technique ( which include PWM, inverter and dq transformation )? Is there any major difference from control of radial flux machine? Thanks in advance. Regards.

Homework Statement I am trying to find a solution to the below attached image. The area for AB=CD = 0.8m^2 Area of BC = 0.3m^2 Force at B = 140 kN (left) Force at C = 60 kN (right) AB=CD = Concrete with a E of 25,000N/mm^2 CD = Steel with an E = 200,000N/mm^2 Homework Equations PL/AE The...

I've been studying this problem, trying to understand the given answer, but still no success. Homework Statement <<provided in attachment>> Homework Equations Longitudinal Strain Latitudinal Strain: where is the amount the radius contracts, r is original radius Average Normal Stress...

Hi all, I was thinking of doing an experiment with axial fan for determining it's stall condition. By stall, here, I mean airfoil stall. I want to do this experiment in order to gain a firm grasp on the concept of stall. I have read the theory but an experiment would definitely give me an...

Hi, I am trying to understand the Overlap Ratio (OR) / axial contact ratio of a helical gear pair. Unlike transverse contact ratio, I am unable to understand OR so easily. What does it mean if the OR is exactly 1? What will happen practically when it goes less than one? Thanks.

I am making a small vertical savonius type wind turbine and would like some general rule guidelines. I am using 14awg magnetic wire--70 turns (2"oval) and ceramic block 1" x 2" x.375" magnets. I am hoping to get the most power possible at lower wind speeds. Is there a rule that states a...

Axial flux alternator is an easy to make pancake of stationary coils between spinning permanent magnets. Having made one and played with it, i ended up with a few questions. Would it make a good motor? There are axial flux motors for sale, and my alternator spins nicely when hooked up to a...

Hi can someone please guide me to an explanation of axial deformation of indeterminate bodies and the method of forces in that too Thanks Chirag

How to calculate the thermal conductance ( in axial direction ) of a cylinder having length equal to its radius

Homework Statement An insulating disc of radius a has uniform surface charge density σ and is rotating at constant angular velocity w about a perpendicular axis through it's centre. a)What is the surface current density ##\vec{j}(\underline{r})## at a position ##\underline{r}## relative to...

---Quote--- *1. Homework Statement * http://postimg.org/image/yrbu7a0vb/ *2. Homework Equations * e(elongation of a member) = (Force * Length)/(Area * Young's Modulus) *3. The Attempt at a Solution * Is the force P distributed so that the force on each bar is P/3 so that F2...

In this article: http://jredman.kombyonyx.com/thesis/Ch16.htm they mention "axial ligands" and "peripheral ligands". What exactly does that mean? Heres the molecule they use as an example: http://jredman.kombyonyx.com/thesis/Ch16_files/image002.gif I can see that the porphyrin rings both...

What is axial rigid body motion? Is it along Z-axis?

To be honest, this problem was gone over symbolically in my discussion session, but I didn't fully understand it. I am having difficulties using the superposition method (or even force method) to solve these problems where a load is applied on the bar and it is constrained at both ends. I don't...

Hi all, I have a very basic question regarding the topic of stress.While deriving the equations of equilibrium for a plane element,there is a concept called incremental stress.That is,if stress in the x direction for one face is σx the stress in the opposite face is σx + (δσx/δx)*dx. Where the...

Hi all, I was wondering what factors determine axial resolution in spherical lenses. I know that axial resolution in conventional light microscopy at least is about half as good lateral resolution. I've read about the huygens-fresnel principle of diffraction and how this can account for the...

so i wanted to know for my own GK about Earth's daily axial tilt.So far i have found only axial tilt on solstice and equinox. there is one way but it is cumbersome and that is to manually find it

I have watched the Sun's shadow make its trek from the solstice moments for many years. I have it marked and like to observe it as Earth's tilt reaches it's maximum point, from Summer to Winter and back. I used a heliodon to built a large structure (80 feet long/12 feet tall=roofline of my...

An axial loading question See attachment below. Have no ideal how to start the question.

Hi, I'm attempting to estimate the windage losses in an axial motor design, and I'm having trouble with the formulas. It might be a math error, or a misunderstanding of the formulas, but I seem to be stuck. An axial motor can be modeled as an annular disk spinning in an enclosure. The disk...

I am a hobbyist and I have designed a radial turbine device for use in a tidal stream. I have conducted a couple of experiments to demonstrate that there is less mechanical stress in the radial approach as compared to the axial approach but I would like to prove this concept mathematically (at...

I take issue with the "Advanced Engineering Electromagnetics" 2nd edition by Balanis again. In Page 156, it claimed for AR=-ve, it is Right Hand rotation, AR=+ve is Left Hand rotation. For plane wave propagates in z direction and at z=0: A)Let Ey lag Ex by \frac{\pi}{2} \Rightarrow\;\vec...

Hello everybody, and a happy new year! Found in Dubbel (Taschenbuch für den Maschinenbau) page C47 7.3.2 the axial load that buckles a thin cylindre. This is not Euler's buckling of a long compressed beam, but probably from Timoshenko's theory for shell buckling applied to a thin cylinder...

Why does Earth have an axial tilt? I thought it may be due to the suns mass and the gravitational effect on space. But Mercury and Venus doesn't have a tilt so I concluded that can't be a plausible explanation.

This is a specific case involving a Jaguar, but any help on the correct way to find the radial axial and torque loads in a moving cars wheel would be greatly appreciated. Thanks in advance Homework Statement Estimate the worst case radial, axial and torque loads on a wheel. Mass of...

Hi, currently i am studying the performance of axial turbocharger, and i have formulate the equation and all the data in Microsoft excel, and i want it to be convert into C++ language, could anyone teach me how to start by doing this, because i am totally new in C++...please...i already upload...