Questions tagged [shear]
78 questions
8
votes
6 answers
Metric bolt shear strength for a layman
As a layman, how can I know the shear strength of a particular size bolt?
For example, if I want to attach something to the internal wall of my van ( 1mm stainless steel ) using a rivnut and standard metric bolt and it should hold up to 50 kg, how…
Robert S. Barnes
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5
votes
1 answer
Is there a difference between punching shear for columns on slabs vs slabs on columns?
Might there a difference in design approach for punching shear for the two scenarios? Or something to pay particular attention to?
Is the slope of the shear plane (normally 1:1) the same for both scenarios? I would assume that it is, since the two…
SlydeRule
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4
votes
0 answers
Boeing 737NG pickle fork cracking. What determines the fastener layout?
Boeing 737NG aircraft are currently being checked for cracking in the "pickle fork" assembly that attaches the fuselage to the wings. The affected joint has 4 fasteners that attach the fork to the wing. It's intended mostly to resist shear loads, as…
emrys57
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3
votes
2 answers
Difference between shear flow and shear stress
I have been given the following problem in one of my courses. To say that I'm struggling in the course would be an understatement... I'm just wondering what the difference between shear flow and stress is, wouldn't they be the same in each…
contract-society
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3
votes
0 answers
How do FE solvers solve the case of panel buckling under pure shear?
How do FE solvers solve the case of panel buckling under pure shear?
The main problem is that global matrix of initial stess is singular in that case. One method is to apply some forces that shear is not so pure. But I think there should be some…
Евгений Павлов
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3
votes
1 answer
How do you ensure that a beam is loaded through the shear center?
Reading about shearing stresses in beams, it is commonly stated that it is necessary to load a section through its shear center, so no twisting is applied to the beam. This is specially important in thin-walled open section, that have very weak…
Msegade
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3
votes
3 answers
Why does concentrated shear force on a beam influence the whole beam?
This might be a silly question but can someone explain how this shear force on the right side of the beam causes Qy throught the whole beam?
I understand it mathematically but not conceptually so I would be grateful is someone could help me…
M. Wother
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3
votes
1 answer
Does notching the corner of an angle brace member help or hurt when shear lag is present?
Does notching or cutting out the corner of an angle brace distribute stress better along the flange of a member with shear lag or reduce the stressed edge of the flange's ability to resist deformation?
Previously, user CableStay had illustrated…
LLF264
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3
votes
0 answers
Normal stress - shear stress pairs not lying on Mohrs' Circles
The three Mohr's circles depict all the possible normal stress / shear stress combinations when material is taken and rotated along one of it's axes of principal stress. Nevertheless, it is clear that rotation around just one principal axis does not…
Bruno KM
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2
votes
1 answer
Is the calculated shear strain in a beam, engineering strain or tensorial strain?
Recently I came across a FEM code of a linear deformation beam element, and it made me wonder what is the correct relation between shear stress and shear strain in a beam element.
In the beam element of the image below, it seems that shear strain is…
Saeid
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2
votes
2 answers
How do you calculate the shear force on the screws that connect a door to a jamb via hinges
I'm trying to calculate the shear forces on hinge screws or bolts. Here is a schematic of the door with the relevant values:
First, I took a free body diagram of the door and its hinges. The calculations to find the forces are also shown below. …
Ryan
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2
votes
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Double Shear Stress butt joint
A double shear butt joint is shown below in the diagram 4 plates are held together by two bolts. The applied force is 42KN. Determine the shear stress within the joint
$$\begin{align}
a &= 2 \frac{\pi}{4} d^2 \\
&= 113.0973355 \\
\frac{42}{2} &= 21…
Kyle Anderson
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2
votes
0 answers
Regarding the ITTC Guidelines for Ship CFD applications
I was reading through the ITTC – Recommended
Procedures and Guidelines - Practical Guidelines for Ship CFD Applications (https://ittc.info/media/4196/75-03-02-03.pdf) document and this little thing kept me thinking. In page 9 the distance y of the…
ASPVL
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2
votes
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What degree of open span/narrow support can rigid PIR thermal insulating foam sustain under the short term load of setting concrete?
I've found data related to the deformation and shear performance of typical PIR (polyisocyanurate) foams such as Celotex/Kingspan, but I'm not sure how to use these figures in my own situation.
I am refitting a solid floor building in the UK. The…
Stilez
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2
votes
3 answers
Deflection of a cantilever beam composed of separate (not bonded) planks
In the case of a simple cantilever beam having a uniform shape and being loaded at its end - the calculation of the deflection at any point along the beam is well known.
What happens if we split it along its longitudinal axis?
I realize we are…
Yaniv Ben David
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