Shear stress Definition and 232 Threads

Homework Statement Question 3: The beam is supported by a pin at A and a short link BC, as shown in Figure 3.0. Determine the maximum magnitude P of the loads the beam will support if the average shear stress in each pin is not to exceed 80 MPa. The diameter for each of the pins is 18 mm...

This is a problem given for laboratory analysis, but there are no relevant equations in our textbook to help solving the problem. Could anyone just give me a hint on what equation should be used to solve the problem? the only relevant equation I know is : shear stress = F/A 1. The figure...

Homework Statement I have an empirically-derived equation for the shear stress of a fluid on a surface, given by the equation below. I am supposed to take the derivative of density with respect to distance, and I must use this equation to find an expression for density. Delta = Boundary...

[b]1. A large plate moves with speed (v.o) over a stationary plate on a layer of oil of thickness (d) and viscosity (u). If the velocity profile is that of a parabola, with the oil at the plates having the same velocity as the plates, what is the shear stress on the moving plate from the oil...

Alright so I'm working on my statics homework and am working on Shear Stress. I know that stress is the force divided by the cross sectional area, but how do I do it for these pins? I've solved for the forces in each pin by using the 3 equilibrium equations, can someone nudge me in the right...

I want to calculate the maximum shear stress, that two surfaces joint by a single lap joint, would be able to take. I am going to suspend one surface from a rigid supoort and then put the force on the other surface downwards using weights. I am assuming that material will be able to take...

I need to determine the average shear stress developed in the glue bond. P=50kN and P2=80mm http://users.on.net/~rohanlal/Untitled99.jpg My attempt: stress=force/area stress=(50/(200*80))+((50/2)/(200*80))*2 Is this correct?

Homework Statement Tau = (some constant) * Nu Homework Equations Shear stress = (some constant) * Kinematic Viscosity The Attempt at a Solution n/a Thanks!

fully developed flow liquid of dynamic viscosity 2.9x10^-3 Pa.s and relative density 0.9 in horizontal pipe of diameter 12mm, length of pipe=200mm and mean velocity is 0.5m/s To find the wall shear stress, i used τ=μ.du/dy = (2.9x10^-3)(0.5/0.012) = 0.121Pa The answer is 0.968Pa, where am...

I require some help please. I know : Rule: T/J = t/r = GΘ/L L = length = 0.33 r = radius = 0.025 D = diameter = 0.5 The starting points and stages would help. I have to hand this in next wednesday, i thought i would ask the community. ------ Determine the distribution of...

Homework Statement Just a quick question: Wikipedia tells me that due the shearing stress, the yeild strength of Stainless Steel is 520Mpa But how can i find out the Yeild strength of a 100mm long rod with diameter 10mm. Is the info for wikipedia based on a 1mx1mx1m cube? or some...

Just a quick question: Wikipedia tells me that due the shearing stress, the yeild strength of Stainless Steel is 520Mpa But how can i find out the Yeild strength of a 100mm long rod with diameter 10mm. Is the info for wikipedia based on a 1mx1mx1m cube? or some sort of SI unit. Cheers

Hi Everyone, I am having a problem finding the shear stresses in an annular plate. The problem is as follows. I have an annular plate with outer radius a, inner radius b. Outer and inner edges are fixed. I also have an annular line load at radius r. I am trying to calculate the shear...

So I got the diameter of the pin at a no problem. For some reason I am screwing up the Force at B. I thought my reasoning was correct, but I am coming up short. The answer is larger then what I an getting, so my F_BC must be too small, thus I am not accounting for something. Here is...

I need an equation for shear force ASAP I am finding average shear stress . i have the equation for that T=V/A T being average shear stress A being area and V being Shear force. Thanks

I would like to derive a relation for shear stress on a conical bore shaped fluid element. Essentially, I have flow going through a converging nozzle. I know variables in this include length of the nozzle, inlet and outlet diameters and pressures and nozzle angle. I've done a force balance on...

i need to find max shear stress at a point on a plate (with a hole) under tension. i found using experimental data the principle strains at the point but i need to find the max shear stress using this data to compare it with a result found analytically. any suggestions?

shear stress, what is a flat tie bar...? Homework Statement two lengths of flat tie bar are connected together by a lap riveted joint with three rivets each 10mm in diameter. Calculate the maximum pull that can be applied to the tie-bars if the shear stress in the rivets is not to exceed...

attached is my problem. any help will be appreciated! thanks!

I'm :confused: I'm OK at electrical theory but mechanical just doesn't compute. I have the following question if anyone can help. Determine the external diameter of a tube needed to transmit a torque of 30KNm if it has an external diameter twice that of its internal diameter. The sheer...

Homework Statement Oil of Density 888kg/m^3 and viscosity 0.8Pa*s is flowing in a horizontal pipe of diameter 0.15m. The local flow velocity at the centerline is 10m/s. find the shear stress exerted by the oil on the wall of the pipe. Homework Equations tau = -eta*(dv/dy) The...

So as you can see, the drawing I've attached shows two bolts through those 3 plates. There are the shown forces acting on the plates, and the maximum allowed shear stress is given to be 110 MPa. You're supposed to determine the minimum diameter required for the bolts. Also, the forces are...

The problem and solutions is here http://img206.imageshack.us/img206/6093/problem1rm4.th.png Isn't the shear stress for both the inner and outer negative? When i take the derivative i get negative. The derivative is basically ln ( 1/x) since the rest are just constants. Edit: I meant that...

I have a rectangular block (propellar) with known width, thickness, legth, and uniform density. It is spinning at a constant angular velocity around its centroid. Then it is decelerated at a constant rate to rest. I want to find the relation between the radial distance from the centroid and...

http://www.savefiles.net/d/ieiwoixnjfw.html Can anybody pls write for me the shear stress eqn using singularities or heaviside function in which i have attach the in the file above pls help thanx

In mechanics of materials we often look at elemental cubes or planar squares, and we write the normal stress and shear stress acting on the faces. Why are the internal moments acting on each face omited? When we cut a frame-machine, we include a shear, normal and moment, why not for the...

On a homework assignment where a device contains three pin connections, we are asked to find the shear stress on two of the pins ( single shear) and a third which is experiencing double shear. For the single shear, I just took the force being applied at the pin connection and divided it by the...

Where can I found an expressionfor the shear stress tensor in GR with some explanation about it? Thanks blue

So I've got this velocity distribution for laminar flow between parallel plates. \frac{u}{u_{max}} = 1 - (\frac{2y}{h})^2 h is the distance between the plates with the origin placed midway between the plates. I'm assuming this is for water flowing at 15 deg C with u_{max} = 0.10 m/s and h...

Imagine a moderately long beam fixed at one end to a wall. Near the end of the beam, a very heavy weight is kept on top of the beam. At the same spot, two small beams are fixed under the main beam in a V shaped configuration such that the two beams form a sort of "press fit" i.e. they exert a...

I have a problem that I'm not sure how to approach. "If the shear stress in steel exceeds about 4.00 x 10^8 N/m^2, the steel ruptures. Determine the shearing force necessary to (a) shear a steel bolt 1.00 cm in diameter and (b) punch a 1.00 cm diameter hole in a steel plate .500 cm thick. I...

A force of 500 N is applied at an angle of 37 degrees to the surface of the end of a square bar. that surface is 4.0 cm on a side. what are the compressional & shear stress on the bar? material processing class and i don't know the equation or where to start someone help please