Bending Definition and 665 Threads

Homework Statement I have to work out the reactions at A & D. Sketch the shear force diagram for the beam and sketch the bending moment diagram. i have worked out the reactions at A=56kN and D=34kN. I have done the SFD. I am just struggling doing the bending moment diagram and don't know how...

I am trying to find the width of a square hollow structural member that can withstand the forces above. However, my calculations are showing me that a square hollow aluminum tube of 4 mm by 4 mm with a wall thickness of 1/16 of an inch would be adequate, which I don't believe. Is anyone able...

http://news.sciencemag.org/sites/default/files/styles/thumb_article_l/public/article_images/sn-gammarays.jpg?itok=vYTMw8My Researchers at Institut Laue–Langevin have found a way to bend gamma rays. Gamma ray lenses, which theory had suggested were impossible, could be made from heavy elements...

Homework Statement Hi I need help with drawing a bending moment diagram for this structure. All joints are rigid and it's fixed to the ground. I'm really struggling with this. I initially started with the horizontal beam (statically indeterminate) and found that the moments at the ends were...

Homework Statement Homework EquationsThe Attempt at a Solution I can't understand the solution and what is the variable "X" !

Homework Statement There is a beam, say length L, with a force F UP on the left built-in support and a CLOCKWISE moment. The right side has a force, F, DOWN and a COUNTERCLOCKWISE moment i.e F up, cw moment -------------------------------------------------------------F down, ccw moment...

This isn't a homework question. I just have a thought I'd like an answer to. When I think of a bending beam it's obvious to me that the point on that beam which is under the most stress would be the center ( assuming equal loads on each side). my question is what is the scientific explanation...

Hi, I have a task and don't know the good solution. (I add the picture of my task.) I need to find the right length and deflection and to check if the results didn't exceed the allowable stress. I know the value of "q" (force). Also I could choose myself the lenght, but I need to check, if my...

Can someone help me with determining the free body force diagram, and hopefully I can go on from there. Homework Equations M = F.dI found T = 500N The answers are shear force = -62.5N , Moment = 64.4 Nm , Tension = 500N

Hi I am planning to make a light weight camera mount for my RC multicopter (drone). Issue is due to irregular shape of the camera, need for the mount to be light weight, and setting up a small angle of inclination (5-10 degrees) the only solution I have come up with is to use light weight thin...

According to Einstein's theory it is the bending of space that keeps the Earth moving on its orbit around the sun and not any invisible force. Why they still teach gravitational force in school ?

There is something that confuses me when I read about space bending. For something to bend it needs to be in space, because otherwise bending does not exist. For example, it makes no sense to talk about the bending of bytes because bytes are not really in space. So how come that space can...

Hi , so , i am not asking this question for invisibility or anything like that, but i do have a few questions. First off, i know that photons have no charge, but is there any way that electro magnetic pulses can effect their path when the copper coils that make the electro magnet are at very...

Homework Statement Problem shown as image jan2010 Q5.jpg Q5. a) Homework Equations Also shown in image The Attempt at a Solution Made a cut between A and the z-line, so ∑M = 0 = M - wx(x/2) = M - (wx2)/2 ⇒ M = (wx2)/2 and d2y/dx2 = -M/EI ∴ d2y/dx2 = - (wx2)/2EI So dy/dx = ∫ d2y/dx2 dx =...

I'm trying to reconcile how a built-in potential can form in a semiconductor heterojunction in which there is a significant band cliff to majority carrier diffusion from both sides of the junction i.e. there is a cliff which should block hole diffusion from the p-type as well as a cliff which...

i am trying to find the pure bending moment of this beam 1. Homework Statement simply supported solid beam 3m long W=100mm D=200mm with a UDL of 2tonnes/m and a point load in the centre of 200N Homework Equations is the pure bending moment at the peak of the bending moment diagram i have...

Homework Statement A beam (e.g. a steel liner) of a length L is bent between two supports, as shown in fig (a). According to the Euler column, the shape is a half period of a sine. Now, a force P is applied at the axis of symmetry - fig (b). What is the shape of the liner? y=f(x) Instead of the...

I'm doing a little project which came to a stop. I calculated expected material stress to be ~10 MPa. (bending) I know that my material (AlMgSi0,5) should carry well that stress, however I'm interested in max allowable stress for this material...

Dear Friends, Merry Christmas to All. I am pleased to join this forum of Physics Experts. Please advise what is difference between tensile Strength and Bending Stress of Metal Sheets (Generally below 3.00mm and lighter). I very often encounter with cracking of steel sheets while bending in...

Help needed In my course paperwork I can't seem to find the relevant equations needed to complete the following in if someone could help point me in the right direction of equations needed I would be very grateful 1. Homework Statement A rectangular hollow beam length of 3m is simply...

Okay so according to https://briankoberlein.com/2014/08/01/bend-like-Newton/ link https://briankoberlein.com/2014/08/01/bend-like-Newton/ "The catch is that the amount of bending predicted by Newton’s model is half of what Einstein’s model predicted." (This is right after the changing diagram...

It seems to me that the ultimate strength of a brittle material can be easily determined by a bending test, but what about the yield? In the brittle regime, I can see how you couldn't, since the sample would fail before it would flow significantly. However, brittle materials can be made to flow...

Homework Statement T-Beam is Steel with E=200GPa Find Max bending stress MC/I (right side where no glue)[/B] 80KG Load at Point "A" shown on the Top view Blue stuff is glue, the right side has no Glue, so its just empty space 2. The attempt at a solution I = BH^3/12 , where B = 0.04m H =...

Can anyone please give an example of the use of bending disturbances in axisymmetrically loaded spherical shell using Geckeler approximation

Homework Statement Consider an n-type Si (Eg =1.1eV, ED=EC, εr=11.8) with a bulk doping density ND=1×1017cm-3, a density of acceptor type surface state 1×1014 cm-2 and these states are at the middle of the band gap. Evaluate the amount of: a) band bending b)depletion layer thickness c) density...

Hi everyone here is the question I'm having trouble with. included is my attempt and the question. 1. The Reactions at A (Assuming the boom weight is negligible) 2. The shear force and bending moment along the boom length and indicate the point of maximum bending moment. 3. The maimum bending...

There is an experiment to determine the Young's Modulus of the wood which involves bending it. The equation used to calculate it is like this E=WX3/4ZDY3 Where D=amount of bending W=force (N) which causes the bending Z=width of the wood Y=thickness of the wood X=horizontal distance between the...

How to derive the formula to find the bending stiffness of an isotropic tapered tube which is cantilevered with a point load applied at the free end?

1. Homework Statement The beam ABCD with the cross section has pin connections at B and C and is subjected to a uniformly distributed load w. If the allowable bending stress is 150MPa and the allowable shear stress is 80 Mpa. ( Hint : the horizontal reaction forces at A and D are both zero)...

I do not have much knowledge in piezoelectric, but all the piezoelectric I've read up on seems to only achieve maximum displacement in measurement values of microns. Is it even possible for some piezoelectric actuator to bend a 10 meter long cantilever beam up to 1 meter at its maximum...

Hi, I am designing a beam to replace a load bearing wall. I have produced 2 separate UDL diagrams which, one for floor load and one for wall load. I am trying to find shear force and bending moment as in one for the total of the two diagrams. I know how to do it if the loads are spread...

I'm trained in Condensed Matter Physics, and I'm trying to learn EE. The concept of band bending always baffled me a bit. Here's why: The band edge bloch states are delocalized over the whole of the crystal, and have fixed given eigenvalues. How can this eigenvalue change over the length of the...

Hi! Need help on following question: Does a flexural bending test suffice for determining the structural integrity of a pre-preg honeycomb sandwhich panel with carbon phenolic face sheets and aluminium core? Any help will be deeply appreciated

How do we get the answer 3.84 x 10^6Nm-2 When I use my calculator I get 3.84 x 10^-4. See attached PDF. I guess I'm making a pretty basic error but I don't know what it is. Thanks Gavin

Alright so I drew it out like did the reactions and everything then I realized I need to include the diameter of the beam. How do I find the max bending stress while using the diameter of the beam? All I need to know is what exactly I do differently compared to drawing the bending moment...

I have attached both the question and my attempt at solution. My problem is reducing the equation further to get the value of a/L

Why does light bend due to gravity? I thought hard, read a lot and I found 3 reasons I can give as the answer. But first let me tell you what Newton said. According to Newton light (Photons) is massless so light can't bend due to gravity because only things with mass can be affected by...

thinking about growing cacti in a tropical climate...could i perhaps build a charged scaffold around them to keep most of the rainwater away? if this is possible i might lose the walls i tend to stay in as well by upscaling it.

Sorry this isn't really intro to physics, it's high school physics... I'm investigating the force vs angle of a mouse trap and I need to talk about the uncertainties one thing is that the lever (hammer/arm/part that hits the mouse) bends. So the angle isn't very accurate. What formula do I...

Homework Statement A body (let's call it a rod for simplicity) is in frictionless space, and is composed of 4 smaller sub-rods fused (cannot break) end to end. Each sub-rod has a unique mass (m1, m2, m3 and m4) and length (l1, l2, l3, and l4), but they all have the same diameter d. A force...

Homework Statement I have a 5m long simply supported beam, with supports at points 0m and 5m. There's a UDL of 10kNm^-1 from 0m to 4m. It has downward forces acting at 2m (10kN) & 4m (15kN). I need to sketch a bending moment diagram to determine the position & value of the max bending...

Hello, Looking for some advice on increasing bending stiffness of a mild steel 1" x 0.065" round tube. This is for a motorcycle frame and clearance is an issue. There is a fuel tank above and the engine below this top tube (two running parallel) that I wanted to reinforce against bending...

Homework Statement (a) Calculate the maximum bending moment (b) Calculate the maximum stress in the beam (c) At the point of maximum stress sketch a graph of the stress distribution through the thickness of the beam, indicating which are tensile and compressive stresses. (d) Determine the...

Can we make curvy vectors? Or to put it another way: Instead of one straight direction, can the direction be round(or something like that)? Thanks

Hello everyone, I am wondering how to properly go about calculating the stresses caused by bending on an angled flat plate. Two approaches seem valid but they give much different results: -Calculate the new area moments of inertia for the angled flat plate (new Ixx, ymax)...

Hello. I saw this experiment: The light from laser is bending in small hole and moving in spring. I don't understand why. Please, can you tell me why? Why does spring moving in spring, not in air? It will happens in each spring? Why it occurs? Thank you very much

If photons are oscillating electric and magnetic fields, then we should be able to deflect photons trajectories by external electric or magnetic field, right? Are there any experiments, either successful or unsuccessful, that attempted to bend the light in some such way?

This is a problem from Michael Lindeburg's FE Review Manual. It is in Chapter 20, Number 11 if you have the book. PROBLEM: There is a picture of a cantilever 2 m in length attached to a wall. There is a force applied at a 30 degree angle from the horizontal at the free end of the beam...

Hi, Can anybody help me withg the following problem: A rectangular plate with points starting from top left corner and going clockwise:: A B C D. Sides CD and DA are simply supported, and a point force F is applied anywhere on the surface. I am looking for the bending stress distribution...

This is sort of statics, but this came up in my physics class before. You have a plate, supported only in the middle by a simple support. So, this beam is balanced on the support, and is bending under it's own weight. What shape does the beam take? I was thinking either a inverted parabola or...