Questions tagged [structural-beam]
A structural element whose length greatly exceeds both its width and height, which are of the same order of magnitude.
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Is the shear stiffness of a helical spring for bending negligible?
I want to model a helical spring by beam theory. Lets call $d$ the stock wire diameter and $D=2r$ the the helix radius (see picture below).
For example: The axial stretch stiffness is given as here. ...
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Why does a cantilever beam bend instead of shearing when a point load is applied?
I have just learnt about cantilever beams and that they are free on one end and supported on the other. In my class, my teacher showed an example of when we apply a point load at the end of a ...
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Beam splitter using a lazer to do the splitting
My title may be misleading, and my question is definatly amateur. I would like to split a beam of light, with a second beam. I suspect this may not be possible (or only possible with large amounts of ...
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Transfer and distribution of forces in hybrid structure
It's a simple but curious question. For an object made of reinforced concrete, it is said that concrete mainly resists compression force and reinforcement mainly resists tensile force. Whether it's ...
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Calculate bending moment for cantilever with uniformly distributed load
I am trying to understand how to calculate the bending moment for a cantilever with a uniformly distributed load so that I can build an equation of moments, as shown in this example:
I tried ...
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Moment of inertia of a cantilever beam [closed]
As part of a project, I'm calculating deflection of a cantilever beam, something like the image below where the beam bends due to a load.
To do so requires its moment of inertia, and I'm thinking of ...
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Why does the beam splitter create superposition?
Why does the beam splitter create superposition ? Ok, in a double slit you have 2 holes in a wall, and thus there are 2 ways through which the particle to go. But in a beam splitter where are those 2 ...
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Elasticity and Hooke's law: who is applying the force?
I am currently studying longitudinal vibrations in an elastic beam. However, I am struggling a bit because it is the first time I have done continuum mechanics. More specifically, when isolating an ...
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Derivation of equation for period of cantilever beam when the distance between the point at which a mass is attached and the pivot changes
I am a high school student writing a research paper on cantilever beams. I am investigating the relationship between the distance at which a fixed mass is placed on the beam and the time period of its ...
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Computing the strain in a cantilever beam under a known deflection
I intend to use a cantilever beam to calibrate a strain gauge, in a setup similar to the picture.
My idea is to introduce a small known vertical displacement $\delta$ on one side of the cantilever ...
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Why is paper inelastic but flexible?
Recently I have been studying solid structural mechanics, and one of the points I find really confusing is how elasticity and flexibility are closely intertwined.
Consider an Euler-Bernoulli beam, for ...
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Huygens-Fresnel integral and Rayleigh integral
While working with the Huygens-Fresnel integral, I learned about the Rayleigh integral again, and I can't tell where they apply and whether they can be replaced equivalently. Also, in terms of ...
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About EBW (Electron Beam Welding) [closed]
I'm an electron beam welding process engineer. We use vacuum chambers to produce close tolerance welds for the aerospace industry. The vacuum chambers are pulled down by cryogenic pumps on the newest ...
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FFT plot not aligning with lower natural frequencies
I have a cantilever beam with gapped springs on top and bottom and an impulse is given at the free end initially.
I modelled it using finite element method with 30 elements.
The beam then oscillates ...
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Is Euler–Bernoulli beam theory still correct for non-constant (but continuous) beam cross-section?
How can I use Euler–Bernoulli beam theory for non-constant beam cross-section ?
The beam is modeled as a continuous cone of known inner and outer diameters (both a function of $x$ the distance from ...
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