All Questions
Tagged with structural-engineering mechanical-engineering
353
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Design a string
Consider a string with a mass attached. The string is fixed to the support above, and the mass is hanged at the other end. Is it possible to design the string for the following two cases?
The mass is ...
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2
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42
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Steel beam splice design
What is a good source of design recomendations for beam splices? I'm designing a structure and I need some help with getting proper splice strength for certain beam size. To make it simpler, I need ...
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64
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How to calculate the material and thickness I need for a certain force on it?
I am trying to figure out how to design how thick a material has to be so that the bar shown in picture 1 stays intact when a user is running on it.
Background: The project is a treadmill and the user ...
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4
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66
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Static Equilibrium of Rigid Bodies
When we talk about the idea of static equilibrium in engineering mechanics we consider the idealized case of a body which is a rigid body, meaning it cannot deform. Then we solve for the 3 equilibrium ...
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Free body diagram problem: Linkage w/ magnets and friction hinge
I am a bit stumped on a IRL problem, which i simplified in the diagram below:
There are left and right beams (gray) linked together by a friction hinge. The bottom beam (black) is connected to the ...
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I have a question about INISTATE Code (Analyzing a curved plate)
I'm studying welding-induced residual stresses for curved steel plates.
So, I need to use the INISTATE code taking initial stresses.
This is the picture that I want to analyze.
I divided a curved ...
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1
answer
33
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DLC wear resistance
I read that a thickness of one micrometer of DLC coating (which, if I understood correctly, shows similar properties to diamond), increases the lifespan of an item plated with it from a week to more ...
-1
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1
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28
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Find the internal bending moment, Mc
A 7meter,m, long cantilever beam whose weight per meter is 19Newton, N, carries a load that varies uniformly from 43N/m, (Newton/meter), at the inbuilt side, point A, to 0 at the free end, point B. ...
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63
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Counterweight requirement and platform design for motorised speaker stand stability
I recently bought my dream speakers (Dutch & Dutch 8c), but at the cost of having to preserve a minimalist interior for the sake of household peace. To that effect, I plan to construct motorised ...
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Does the magnitude or range of interaction of a force affect which layer dominates the mechanical response of a multilayered structure?
Suppose I have a two-layered material, with a stiff and thin outer layer (high E) and a soft (low E) and thick inner layer.
Intuitively, it feels like the effect of short-ranged forces (e.g., van der ...
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31
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Contradiction in Convolution Solution
In this question, I solved the convolution for triangular pulse and the solution was
Now take k = 1, m = 1 , And as R = Ku/P0, R =
So, for t<td u(t) is a function of t and for t>td its a ...
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62
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Some questions about linear rail systems
there are many linear rail system configurations. Some with only one lead/ball screw in the middle and a moving platform with wheels aligning outside/inside/on top of one/two framing rail(s). Others ...
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41
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How do I find the pitch for the fly press?
To solve the problem first I need to find the pitch of the screw to find the shearing stress, is the stroke 45 degrees per 5.75mm or 90 degrees per 5.75 mm?
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64
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Belt conveyor roller spring
I wanted to know if anyone could help in this area.
I want to create an inclined conveyor belt where, when a cargo box reaches the top of the conveyor belt, the rollers sequentially move down (maybe ...
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1
answer
73
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Need to find beam deflection of a steel tube
So I have a square tube of 40mm, 3mm wall thickness with a length of 1 meter. Both ends are fixed 25mm inwards. Load is 3kg centerpoint. Steel is SJ235.
I need to know the deflection of this beam.
...
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