Deflection Definition and 530 Threads

Can anyone help me to find the answer,,, its a very difficult question! Q- calculate the safe inclusive UDL for a 356x171 UB67 simply supported at the ends of span of 9m. The permissible bending stress is 167N/mm*2 and the defluction must not exceed (1/360) x span, and I = 187.2x10*6mm*4...

Homework Statement In one type of mass spectrometer the ions are passed through a velocity selector. This is a pair of parallel plates 2.5 cm apart. A pd of 140 V is applied to create an electric field. A magnetic field is also applied so as to give a force in the direction opposite to the...

If i have a simple suppoted beam, let's say for example 2 supports with overhanging loads at end and/or midspan. DOES IT ALWAYS HAVE zero deflection at the support? or are there times that there is deflection at those supports? :confused:

Let us say we have a very long glass that has a uniform square cross section. Its long axis is aligned with the x axis. A beam of light is directed along the y-axis such that it is normal to the side of the glass rod's side surface. When the rod is stationary wrt to the observer we would expect...

Hello, I would like to know how to find the deflection of simple 2 beam assemblies. In college, I remember only doing one beam problems. For example, a beam supported at both ends with a load in the center would follow the equation v_max= -(P*L^3)/(48*E*I). What if 2 identical beams...

Hi all Sorry if this is in the wrong place... I've been doing some beam deflections on a simply supported beam, with loads applied to the overhangs, and have used MDSolids, Hand Calculations and Solidworks. My hand calculations match up with the results that I have got from MDSolids...

Homework Statement In an ink-jet printer, drops of ink are given a controlled amount of charge before they pass through a uniform electric field generated by two charged plates. If the electric field between the plates is 1.5x106N/C over a region 1.20cm long, and drops of mass 0.12nanograms...

Hi Guys, Please see attached diagram. I have done the maths but i am not convinced. Maybe i have missed something but i have not done structural maths for a while. I am using Force = ma where m= mass and a = 9.81m/s2 I need a deflection value for a mass of 19000kg And a mass for...

Hello all, new member and amateur engineer from Tucson, AZ. I am working on a homebuilt, part 103 legal, ultralight project. I am trying to find the formula for deflection of an aluminum tube. I need to know how much weight will cause permanent deformation of a tube suspended between two points...

Homework Statement A comet is approaching the Sun from a vast distance with velocity V. If the Sun exerted no force on the comet it would continue with uniform velocity V and its distance of closest approach to the Sun would be p. Find the path of the comet and the angle through which it is...

Am i right in saying i can use this formulae: - W/EI((x^3/12) - (xL^2/16)) + w/EI((Lx^3/12) - (x^4/24) - (xL^3/24)) please help. See attached question. Question aii. Thanks

I would like to know how much light passing close to the sun will be deflected by the suns magnetic field and the increase in density of space around the suns corona.

@Admin: question doesn't really lend itself to the template, so I'm not going to use it. Hello. I am writing an N-body simulation program and am currently trying to add deflection/collision functionality and am having trouble figuring out how to do this. So, I have two bodies coming...

Homework Statement Construct the slope and deflection diagrams. I've attached the problem with the original diagram (problem #1). The Attempt at a Solution Considering the number of diagrams required, I thought it would be best to attach a photo of my work. I drew the shear and moment...

i thought the maximum deflection of a structure (a beam for example) occurred at the same location of the maximum bending moment. But, doing some homework I am getting contradicting results. does max deflection ALWAYS occur at the same location of the max bending moment? thanks for the...

I have some questions about calculating the deflection of beam. First, when should I applied the method of superposition ? Second, When I'm setting a "x" on the beam, where should I start and end ? Thank you for answering!

This is not a homework question.. just share your thoughts please...

Homework Statement Stack a steel beam on top of an aluminum beam. If you are given the Young's Modulus values (in psi) of each beam, try to predict the deflection of the "composite" beams. Please view the "Hint" my teacher gave me in the pdf attachment in this post...

I have recently been interested in photothermal deflection (aka the mirage effect) after having read this article: http://www.wired.com/dangerroom/2011/10/invisibility-cloak-mirage/ and this paper: http://iopscience.iop.org/0957-4484/22/43/435704 I would like to recreate this experiment...

I need a little help in figuring out spring rates for a system I'm working on. I'll try to describe it as best as possible: I want to lower a growing stack of material (tubes) from an elevation to the floor. As more tubes are stacked, more weight is added to the system and the load lowers...

I want to calculate/preparing a spread sheet for large deflection of simple supported plates. I search for too many documents but all of them for small deflection d≤ t\2 (d deflection, t thickness of sheet). I found a website http://www.xcalcs.com/cgi-bin/tutti/x3calcs.cgi?d=i_4_2_1_0_0&l=en but...

Hey guys so I've been looking everywhere on the internet, and i can't find any theory and history on beam deflection. I understand the formulas and all but what is the theory behind it, who discovered the first rational answer to explain things etc.. Please Help

Homework Statement Electrons first run through an accleration voltage of U = 25 kV before entering an homogenous magnetic field which is perpendicular to the electron beam (B=6*10-3 T). The starting velocity of the electrons shall be zero. What is the deflection angle α, if the magnetic...

Homework Statement Hi guys, I need some help. I haven’t done mechanics for a few years and am a little rusty but have a task for work to verify FEA (which hasn’t been done yet). I have a semi circular beam that is bolted down on its ends. Mid way there is vertical force of 100kN...

Hi there, The first thing I wanted to say (as I said the last time I created a new thread) is that this is NOT A HOMEWORK QUESTION! From the rules laid out, it says that homework for undergraduates and college students should go in the homework section. I have a degree in Mechanical...

I am desiging a simple deflection test apparatus for my company. In the system I am using a few pulleys, a steel cable, a force gage, and a ratchet strap. I want to use the ratchet strap as opposed to dead weights so I can apply varying amounts of force to the test member. My question...

Hello Folks, I'm after a little help here, I've been asked to calculate the maximum strain a beam is under at a certain deflection, for a part we are planning to get Rapid Prototyped It is a rectangular beam attached to a wall at one end I have the material data sheet for the material...

How to calculate the deflection in ring, fixed at center, with a radial point force acting at some point(let say at theta=0) ? I have derived complete set of equations. Now how to apply boundary conditions ? to get a complete solution of 4th order equation, I need 4 B.C's, but here...

Hi, I'm trying to carryout some analysis of flat plates subjected to hydrostatic water pressures however the plate material is HDPE. The problem I'm having is that all the formulae on the web and in Roark's 7th Edition are typical of steel with a Poisson's ratio of 0.3. I can't therefore...

Could anyone please tel me how to calculate the Bending Stress, Compressive stress and the Deflection for any beam (UB 203x102x23) subjected to Uniform Distributed Load of 8063 N/m over a 8 m long beam (simply supported beam). Thanks all.

I wasn't sure whether this was the right place to post this since it isn't really coursework, but it seems like it could be. My problem is with the deflection angle of light for several point masses. The deflection for a point mass can be described as: \frac{4GM}{c^{2}\xi} where \xi...

Hi, Can anyone tell me how I get to the angle of deflection in a prism? How do I get to \delta=\alpha_{1}-\beta_{1}+\alpha_{2}-\beta_{2} Thanks for the help

Ok to make this easy let's start with a 10 lb Bowling ball (let's even say 10 inch diameter) moving at 10 mph. What is the difference in the forward force (energy) required to stop the ball verses the energy applied the move the ball through a 90 degree curve with a 20 inch diameter arc. In...

Homework Statement The problem is in attached. Desgining basic beam Homework Equations M = E*I(d^2*w/dx^2) slope = E*I (dw/dy) = integral of E*I(d^2*w/dx) + c1 deflection = E*I * (w) = double integral of E*I(d^2*w/dx) + c1x + c2 ΣM*= 0 ΣFx = 0 ΣFy = 0 Yb = ΣAY / ΣA I =...

Homework Statement For the given beam (link), calculate the tip deflection for the given loadings. In addition to the applied load, the beam wt 2000 lbs/ ft. E = 30 * 10^6 psi I = 60 * 10^3 in^4 http://i52.tinypic.com/990xef.jpg Homework Equations deflection for the uniform load...

my question is regarding calculation of deflection of a composite beam, ie a beam with a cross section made up of 2 separate homogeneous materials. the methods i know for calculating deflections in homogenous beams are energy methods(catiglianos 2nd) and the elatic curve equations(second...

Hey everyone, After a little help with some deflection caused by a rotating offset shaft. This is the scenario. We have a vertical shaft (165kg ~3.3m, supported at one end only) rotating at 14.67rad/s and getting some undesirable deflection and odd dynamic behaviour. I'm trying to...

I have written a computer game which involves 2D asteroids spinning and colliding with one another. Out of some kind of pride or something I wrote my own physics engine to handle the collisions, even though I never studied physics. (Please excuse therefore any incorrect terminology)...

Hey everyone, hoping someone can point me in the right direction with a deflection question. A pressure vessel I'm working on needs to be pressure tested before it can be shipped out to the customer, so I'm having a large plate cut to match the flange. The opening is about 1500mm in diameter...

In trying to compute deflection angles for photons given their impact parameter (closest distance of trajectory to centre of black hole if unaffected) I am trying to numerically integrate the following equation (d^2/d(phi)^2)(u)+u=3Mu^2. However I am stuck as to how to work out the initial...

Homework Statement Homework Equations For small deflections: M=EI \frac{d^2y}{dx^2}The Attempt at a Solution To solve a problem like this, I think I was told I need to study the deflection and displacement of the beam. If I said that the deflection at points x=0 and x=3L have to be 0 then...

Homework Statement here is a picture of what is given: http://img838.imageshack.us/i/physicsproblem.png/ I am supposed to find the measure of angle Θ and by what amount Φ is the ray deflected from its original path. from what is given i know that the angle of incidence is 35 degrees...

Homework Statement I think I've got part of this question but it's multiple choice and nothing that I've got matches any of the options we were given. I'd really appreciate it if you could help me out. A straight, vertical aluminium bar, 1.0-m in length and 12.5-mm x 4.8-mm in cross section...

I'm dealing with this problem for an MCAT review: Following beta-emission by a neutral atom at rest, the respective linear momentums of the beta(-) particle and the resulting atom are shown below. (see attachment for message) It wasn't too difficult to see that an extra force is in play, and...

My Question... To find the maximum deflection of this axle, can the formula: (W*a/24*E*I)*(3*l^2-4*a^2) Will the total length simply be 370mm(wheel to wheel), or will I have to include the total length of the axle?

Homework Statement Calculate the deflection at the end of a rod whose dimensions are 1m x 0.1m x 0.1m, when a load of 100N is applied. The modulus of elasticity is given as 1 x 1011 (N/m2) Homework Equations d = PL/AE where d = end deflection of bar in metres (in m) P = the applied...

Please refer to the diagram attached. I am trying to work out the peak stress and deflection of a vertical member in a simple steel frame. I know that the vertical member will be subjected to a buckling stress, but I'm unsure as to whether the moment about O caused by the cantilevered...

Here we have got tall building standing on the ground and long rod. Rod’s one end is placed on the ground and the second one-on the building. Surely, the rod will be deflected due to its own weight and Earth’s gravity. Can we calculate the value of deflection if we know rod’s end, its...

Homework Statement A uniform beam, supported by a uniform strut, is loaded as shown in Figure (Attached). Using the unit load method, determine the value of the vertical deflection at C. BEAM: E = 205 kN/mm2, I = 90 x 106 mm4. STRUT: E = 205 kN/mm2, A = 1500 mm2. Homework Equations...

I have the following problem, which involves a two-dimensional curved and thin beam with profile given by y= f(x). You can assume that the beam is only weakly curved (and so slopes are all quite small). The beam's free-ends are both subjected to a force F1 and F2 (which will be given) and is...