Shear Definition and 575 Threads

Homework Statement I've attached my sfd and bmd for a beam, i just need someone to tell me if its right. the 15kN on the left side is a reaction force. Homework Equations The Attempt at a Solution i've attached my working

Hi everyone, I've taken a course at uni that may be a little bit over my head, and am pushing through an assignment for it at the moment in an attempt to do well. I've hit a bit of a roadblock on one question though, so am hoping that someone kind here can help me out! The question is...

Hi, i just did a unaxial tensile test for a done specimen. What i got is the stress-strain curve, and poison ratio. May i know how can i determine the shear modulus G12 ? I gt E1, E2 and V12 and V21.

Following Wald I have nearly got the right answer out for time derivative for shear...what I am left with is showing that R_{cbad} V^c V^d + h_{ab} R_{cd} V^c V^d / 3 (which is obviously symmetric and trace-free) can be written as C_{cbad} V^c V^d + \tilde{R}_{ab} / 2 where \tilde{R}_{ab} is the...

Im trying to generate a simple beam program in mathcad and am having trouble with the integrals. Attached is what I have so far:

I am trying to write shear and moment equations in mathcad for a simple beam problem. Any help would be greatly appreciated. Thanks

Hi can anyone help how to calculate torsional shear stress for square bars Regards, venkata prasad.G

fresh out of ideas. Need help. 1) Solve for shear and moment at the given distances a) at midspan b) 5m from ROLLER "A" SO FAR I GOT THE REACTIONS AT POINT A AND B. 13KN AND 15.5KN RESPECTIVELY 2) Solve for shear and moment at the given distances a) 5m from ROLLER "A" b) 9m from ROLLER...

How would I analize a bolt in tension and shear. Imagine an "L" bracket bolted in the configuration below "||" represents a bolt. There is a force "<--" at the top of the bracket. <--| ...| ...|_____||_ The bolt will see tension and shear. There will be tension in the y direction (Sigma...

Homework Statement The simple pin-connected structure carries a concentrated load P as shown. The rigid bar supported by structure AB and by pin at C. The steel strut Ab has a cross sectional area of .25in2 and a yield strength of 60ksi. The diameter of the steel pin at C is 0.375in and the...

Homework Statement [See Attachment] Given: Thickness, load, G Find:γ and horizontal displacement. Homework Equations τ=γG Angle change should be the shear strain. The Attempt at a Solution I tried plugging 800 into tau and the given value of G to get γ, but that isn't...

Hi. Situation: A pipe with a cut out so it will break when a shear force is exerted at the top of the pipe. The break point is at the cut out and the the force is impact in lbs. What is the wall thickness(or cross sectional area) at the cut out point? I know i may be missing variables...

I am reading through some calculations in a book that refer to an average shear modulus of steel (19700)... they give no units and it has completely thrown me off track while following through the calcs can anybody help? I know the unit is imperial and if i convert some of the other units...

1. I have a rod as pictured in the attachment. The rod is at a 45 degree angle. The load force is 115.118lbf The force is y-direction is 97.954lbf The Force at A is 5 inches from Force in the y-direction. The force at B is 10.5 inches from the Force in the y-direction I need to find...

Inside a black hole singularily, the center is pulling spacetime to it, but because the spacetime fabric inside and outside the event horizon are connected... it doesn't shear or break. But during a Big Crunch, the entire spacetime of the universe would be sucked back into the singularity and...

Homework Statement http://img62.imageshack.us/img62/9815/mechmatt.jpg P = 235 kN d = 50mm (diameter of the axis) t = 20 mm t1 = 12 mm Safety coeffecient = 2.0 σy = 320 MPa Check the axis for strength (shear and compression) Homework Equations...

before i ask my question i want to review two points: 1. place a body like a moon or a planet near a black hole, as the body approaches the extreme gravity affects the body deferentially. 2. review the tidal forces on Jupiter's moon Io leading to volcanic/tectonic consequences. now take...

Homework Statement Designing a safety pin for gate valve, picture is attached! Material: EN24 (λ=680MPa and E= 207 GPa) Total distance between supports = 98 mm! Force applied by gate is 64705 N! Question: Minimum diameter of pin for 1) No shearing , 2) a maximum deflection of 1 mm...

Hi there, i have a problem trying to derive the equation for the shear centre of a thin walled slit circular section of uniform section. I have attached a photo of the question bellow. it is taken from mechanics of materials. I hope someone can help.

I have a cross-section of a beam like this one http://imageshack.us/photo/my-images/810/img0129xf.jpg/ And I have to calculate the shear stress τ. I have these things allready calculated: Xc=8cm; Yc=6.9cm Moment of Inertia Ix=2946.7 cm^4 Moment of resistance Wmin=323.8 cm^3; Wmax=427.1 cm^3...

Homework Statement View image below Homework Equations The Attempt at a Solution I don't understand where the normal and shear forces are applied. Are there one of each on both inclined planes or is there just one normal force and one shear force? If you could provide a drawing I...

Homework Statement View image for all details Homework Equations tao = V/A The Attempt at a Solution I went ahead and solved the force at BC and the x and y components at A, but I feel as though my solutions are incorrect. At BC I have F = 825 kN (up and to the left), A_x = 714.5...

Homework Statement I am trying to work out the Shear force and bending moments in a simple cantilever bean with a point load and a U.D.L but am not sure of the equations or how to go about starting it. Its a 2 m long cantilever beam built into a wall at the right-hand end, Point C. A UDL is...

hi my name is adil from Pakistan.what is a reason to produce shear stress in shaft,can normal stresses is produced in shaft&where is max shear stress is apply in solid shaft at end or center.

Homework Statement A flange coupling is use to transmit torque of 1500 Nm between two shafts. The coupling has four 8mm dia. bolts equally spaced on a PCD of 175mm. Determine the shear stress on the bolts Homework Equations fs=\frac{F}{A} The Attempt at a Solution Back of the...

Hey guys, I was just doing some mechanics of solids. I haven't done this section at uni yet, had holidays so was just trying to go ahead a bit. But the problem is I am completely lost on shear centre. If you could help me on a question, i'd be very grateful. Homework Statement The question is...

Homework Statement Neglecting the size of the pulley at G, draw the shear and bending moment diagrams for beam AB. Homework Equations Fxnet=0 Fynet=0 Netmoment=0 The Attempt at a Solution\ What I want to do first is figure out the reactions at A and C, however I'm not sure...

Need help calculating Shear on a 5/8" square key PF, I am trying to figure out how to calculate the shear on a 5/8" x 5/8" x 3-1/2"L standard shaft key, when the OD of the shaft it fits into is 3". A tire of ~40" dia rides on the shaft and at any given time, let's say a load of 20,000lbs is...

Figured it out.

Homework Statement I'm looking at some problems and solutions to them, and when they calculate shear stress instead of having the area of the thing be pi*r^2, there is usually a (pi/4)*r^2. Homework Equations Shear Stress = V/A The Attempt at a Solution I don't understand where...

Does anyone have any empirically based equation for estimating torsional shear strength of a tube made from a given steel. I've seen "estimates" ranging from 57% UTS to 75% UTS, but nothing empirical. I'm open to anything based on UTS, a given offset strength, or JAEL yield. Thanks!

Folks, I was checking to see was it possible to determine the bending moment diagram from the shear force diagram. Seemingly one can do it for simply supported beams but if we consider a rigidly supported beam on either end its not possible to derive the bending moment diagram from the shear...

This is my first course in Engineering and the professor told us today that we have to do shear and bending moment diagrams for an arch bridge. Anyone have any clue on how to do this? He gave us no information on how to do it and nothing in a book. Please help??

Homework Statement draw/find the shear and bending moment diagrams of: Homework Equations V : shear M : bending moment ω : distributed load The Attempt at a Solution i already understood how the solution worked but i can't quite understand how the equations with the boxes were derived

id like to think i did this right, but i just want to make sure. i can't do symbols so let d equal sigma. the stress components are d_xx= 200 MPa, d_xy= 50 MPa, d_yy=-100 MPa. I need to find the max shear stress, and the principal stresses, and then a_s and a_p. heres what i got: max...

Homework Statement Homework Equations \gamma_{max} = {\left|{\epsilon_1} - {\epsilon_2} \right|} The Attempt at a Solution I calculated the maximum shear strain to be 200 \mu. For the angle, I don't know exactly how to go about finding it. However, the solution says that the angle is...

Homework Statement This would be really difficult to type, so I've attached the given problem and my work. I think it is legible for the most part, but let me know if you have problems reading something. The Attempt at a Solution My shear diagram worked nicely. I've run into a problem...

Hi there, I should probably know this (attempting to do a PhD in physics!) but is there a way to differentiate between longitudinal and shear acoustic waves in a solid? I know that seismologists know which is which by using the time of flight difference for the two types of waves and the...

Hi, i would just like to clarify some terms used in aerodynamics with you guys here and find out more about these terms at the same time. Turbulent shear layer: Does this term refer to the first layer of air immediately adjacent to the wall surface over which the air flows? Turbulent...

Hi guys, its been awhile since i have been back. Right now, i am involved in some research on aeroacoustics and i have been trying to get some of the basic fundamentals on aerodynamic generation of sounds. Unfortunately most of the online literature do not give much details on the physics of...

Stress's for circular bar? Calculate the maximum normal and shearing stresses of a circular bar with diameter 0.05m and axial compression load of 150000 N .. I know for stress = Force / Area, how do you solve for shear stress?

Homework Statement I need to create N-, M-, V- and T- diagrams for a frame beam. (see picture attached) The beam is 1m. The force on top is 1200N. Homework Equations /The Attempt at a Solution I started with the shear diagram. But i was having difficulties with the two normal-forces on the...

Homework Statement Homework Equations \sigma = F/A The Attempt at a Solution I understand that I should evaluate the different forms of stress to find different values of the ultimate load. I also understand that I should choose the smallest value among them since anything...

Homework Statement This cantilever confuses me so much. The negative point loads and negative distributed load. And is the other one that's -40kN/m moment/torque or something. My question is how do I do the shear force and bending moment diagrams of this. Am i suppose to redraw the diagram...

Homework Statement I just want to know the difference between certain equations for shear stress. I'm trying to find the factor of safety for pins that are in double shear and have a circular cross section. Homework Equations So far I've used stress = 2F/pi*d^2 for double shear...

Looking to figure out the allowable stress (psi) of a shaft which has two pin holes in it on the transverse axis of the shaft. tau = allowable stress, psi T = torque, in-lb c = distance from center of gravity to extreme fiber J = polar moment of inertia D = diameter of the shaft d =...

I am having some difficulty getting my head around the terms tension (stress/strain), shear and torque in a bolt and cantilever. Lets say we have a cantilever 1m long bolted to the wall, with the bolt in the middle of the cantilever and a 10N force hanging and/or directly attached to the end...

Homework Statement [PLAIN]http://img823.imageshack.us/img823/6601/unledpicturex.png Homework Equations q = \tau/b \tau = (VQ)/(Ib) I would like to calculate the shear flux in one row of nail. By taking the first moment for the upper board, calculating q and dividing by 2 I get the...

Homework Statement what is shear flow and how can you use it for?

In an