Deflection Definition and 500 Threads

The title is fairly misleading but is within the subject. I have drawn up a beam of my own as part of my classwork because what bothers me is how you would find Young's Modulus [E] and the second moment of inertia [I] without being given them. Every question I have looked at has given me...

Homework Statement The picture of the beam below has a module of rigidity EI, determine the reactions at the supports and the equation of the deflection curve of the left half of the beam Homework Equations v*EI=((Ma*x2)/2)+((Ra*x3)/6) Ʃ of Forces in Y direction = Ra+Rb=0 Ʃ Moments...

I was wondering if there were any mechanical engineers that can answer a few questions I have regarding an assignment that I have been set. We have to choose a suitable beam to support a monorail. we are looking for a moment of deflection of around 10mm. Using the universal beams table bs 4 1993...

the beams are fixed at point X. Load P is applied at Y. How different would be the deflections at P.

Homework Statement The brake linkage for a truck is actuated by hydraulic cylinder AB. Cylinder AB, springs CD, EF, and GH are the slotted tracks are all horizontal. The slotted tracks are frictionless. If the cylinder AB exerts a tensile force of 12 kips, determine the deflection d and the...

Homework Statement The drawing shows a 152-kg crate hanging from the end of a steel bar. The length of the bar is 0.09 m, and its cross-sectional area is 3.80x10^-4 m^2. Neglect the weight of the bar itself. (a) Determine the shear stress on the bar. (b) Determine the vertical deflection...

hi, last week we did an experiment to find the deflection of simply supported beams. During the experiment, after every measurement we had to tap the frame slightly. Does anyone know why we had to do this? If you could explain it to me I would be grateful.

The deflection D of a beam of length L is $D=2x^4-5Lx^3+3L^2 x^2$ where $x$ is the distance from on end of the beam. Find the value of $x$ that yields the maximum deflection. this is from a unit on inflection points so assume this is $\frac{d^2}{dx^2}$ and also looks like an implicit...

Homework Statement A positive moment of 12000Nmm at the tip applied as two equal and opposite point loads of 1000N in the x direction at C and D. The beam is fully fixed along AB. Young's modulus E = 200*(10^3) MPa and the poisson's ratio = 0.3. Geometric Properties: Width, b=10mm...

In which direction will the pointer move when current is passed? ------->-------(|)--------->---------- [Galvanometer] Does it move to the right? AND There is another one that is connected from top to bottom: | | ^ | | | (|) [Galvanometer] | | | ^ | | | Where will the (|) move?

I am trying to show how the shock wave angle varies as I hold the deflection angle constant and increase the Mach number. I am trying to solve for Beta (shock wave angle) using the theta-beta-mach relation: tan(θ)= 2cot(β) * (M2sin2(β)-1) / (M2(1.4+cos(2β))+2) This seems like it should be...

Homework Statement The problem I am having troubles with is proving the deflection of a ray by a prism can be represented by a specific equation : θd = θ - α + arcsin(sin(α)√(n2 - sin2(α)) - sin(α)cos(α)). I have derived another form of the deflection equation for a prism and I am attempting...

The attached question shows a simply supported beam with a UDL of 30kN/m and has a rigid arm underneath with a load. This question was a research one but unfortunately I have had no luck. I thought that this could be solved by doing moments for the arm but am unsure on whether that would...

How can wave optics explain total internal reflection?

Homework Statement Calculate the deflection of an electron beam as it passes between the plates of a CRT tube. In the picture, the parallel plates create an electric field, with the positive plate on top and the negative plate on bottom, causing the electron's path to be deflected upwards as...

Hi Guys, I'm wanting to measure deflection in an injection mould tool. I'm planning on using strain gages to measure the strain in the tool under injection pressure. Is there a way I can use these strain readings to calculate the deflection in the plates? Thankyou for any help. :)

Hello, When we use slope deflection method in frames we neglect axial deformation in order to get the same delta when the frame is sway,(that what i understood) So i have two questions 1. Neglecting axial deformation means ignoring axial force??Or what?? 2. How to neglect axial...

I was just wondering if there is a simple formula for determining how much a horizontal light beam deflects in an accelerating elevator. The horizontal light beam would start at one side of the elevator and hit the other side of the elevator. In a non-accelerating elevator, the light beam would...

Deflection -- difference between pin and fixed joints Hello all I have a question regarding deflection. What is the difference between pin and fixed joint in frame l(first picture fixed the second pin), I can summarize my question in points: 1.fixed connection introduces equal theta as...

I had this as an exam question in my first Structural Analysis course, and couldn't figure it out. The frame is supported by 2 cantilevers at points A and D. The top member is perfectly rigid, that is EI=infinity. E is constant. Solve for the deflection at point B and the reactions at A and D...

Hi I came across a problem as below : 2 masses M1 and M2 are connected by a spring and kept on a frictionless table horizontally. A force F is applied to M2. What is the maximum displacement of the spring ? The acc of the COM of the system is a = F/(m1 + m2). However, each mass will...

Hi all, I'm currently designing a housing for a camera and omnidirectional mirror for a robot. The housing is connected to the robot through a rod of about 25mm diameter. ...{...}... (housing) ...|... (rod) ...(___)... (robot base) I'm trying to compute the deflection in the rod when the robot...

A Big Problem: (a) sub-problem 1: Assuming that a radio transmitter emits a radial pulse 'K' times a second, what would that frequency need to be in order to detect the doppler shift of an object traveling a 6000 m/s? (b) sub-problem 2: If one had a cathode ray source which was outputting an...

So I am trying to figure out how I can calculate the deflection and ultimate bending moment capacity of a hollow tube beam when the hollow portion is not concentric. A regular concentric tube is easy enough but this has me out of my depth. I assume that it will no longer be symetric in its...

Problem: What is the equation that relates properties of a metal (modulus of elasticity, yield strength, elongation, etc) to how far it can deflect before permanently being bent. I can calculate how far a beam will deflect under different loading and support but I just don't know what the...

I have a problem how to select the boundary condition when i answer this deflection of beam. for example: the boundary condition is [x=o,y=0],[x=l,y=0],[x=o,dy/dx=o] and [x=L,dy/dx=0] given that EIdy/dx= Ax+wx^2/2 EIy= Ax^2/2+wx^3/6 anybody can tell me how to select this?

Homework Statement Given a W21x68 beam with 1.388 kips per foot loading spanning 34 feet. The beam will carry the load but the maximum deflection is greater than wanted. We would like to put a W33x118 beam perpendicular to the centerline of the W21x68 (17 feet), to limit the deflection...

Homework Statement I would like to know how to find the horizontal and vertical deflection of point C shown in the attached diagram. I also need to find the angle of deflection for point C. Homework Equations The Attempt at a Solution I've already found a solution to this problem...

Homework Statement The deflection of the electron beam in an old-fashioned tube TV set is accomplished by magnetic forces. Each electron is accelerated through a potential difference of V=30000V. The charge to mass ratio of the electron is 175824175824.176C/kg. If there is a x2=0.1m gap...

Hello. Here joined is the schematic of a small deflection amplifier. Outputs H0 & H1 are connected to electrodes placed in a vacuum volume. These outputs are protected by varistors. High voltage to collectors is 200 V DC. Sometimes, not very often, the head Op-Amp (LM324) is burnt. The only...

Hi, I haven't done beam deflection before. My textbook shows the usual simple beams with a perpendicular force acting on it. This one is a lot more complicated. I'm pretty sure the forces acting in the horizontal direction have to be added into this some how. Can someone look at the...

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 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...