Questions tagged [strength]
This is to be used for topics regarding the strength of materials, the analysis of internal forces in a body and all the governing principles which considers deformation of bodies.
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Column Buckling Boundary Conditions -- Welded Tubing Practical Application?
I'm trying to do some calculations for a personal project. I'm trying to understand column strength / buckling. My questions relate to Effective Length Constant, which is based on Boundary ...
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Is inverse hall-petch relation valid crystals larger than nanocrystalline?
The image shown here is of ceramics, where they varied the grain size and measured the strength. For example, let's take Al2O3. There we observed that strength first increased from 3 μm to 95 μm. But ...
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How do I relate Grab Strength and Grab Tear to the real world?
I'm looking at a spec sheet for a high density polyethylene woven fabric and I'm seeing the following parameters on it
Tensile Grab Strength: Warp 155 / Weft 170 - tested ASTM D-5034-09
Grab Tear:...
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Most efficient fillet design given an envelope (for stress)
If one has a specified allowed X length and Y height, into which a fillet can be placed to reduce stress concentrations, is there an equation which can be used to determine the optimal shape of the ...
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What is the Hoop stress and bending moment relation
So I am working on a club telescope project. I have to design the tube for the telescope.
So I found hoop stress to be most critical stress.
The tube's bottommost end has a mirror and a mirror cell. I ...
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Why are these food stretch films (LLDPE) holding one one-thousandth of the weight in reality than what is expected from the datasheet values?
I am trying to reproduce analytically the results found in this experiment where a weight of 3 x 5 lbs (6,8 kgs total) breaks the cling wrap (LLDPE) which is stretched over a medium size cooking pot.
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How do I calculate the strength of a carbon fiber tube?
I am not a mech engineer and have been struggling with this for a while, I feel like it is pretty straight forward but I'm missing something.
The problem is a horizontal tube that is supported at one ...
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Server rack modifications - strong enough?
Question: Can I modify this rack and have the result still strong enough to hold the content?
I have a server rack made from Steel. However it is 1980's old and doesn't quite conform to modern ...
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Manual vs Fusion360 calculation of natural frequency of beam
I'm trying to uncover the natural frequency of a mass-less beam with 2 masses attached but getting different answers from Fusion360 vs a hand calculation.
L1=1m, L2=2m, m1=10kg, m2=20kg, Young's=...
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How many support beams/rods needed for a firewood storage cabinet
I am building a firewood storage cabinet which should support around 100-150 kg of firewood.
The cabinet is made out of wooden boards (...
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Stopping force exerted on a rope. (Checking if rated strength is sufficient)
I have a 23 kg dog, and a rope lead that is rated to 50 kg.
If the dog is running away at say 6 mph and I pull on the lead to decelerate and stop the dog within say half a second or say 0.5 meter what ...
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Should I use ST or LT values for extruded rod?
In MMPDS for AA7075-73511 (extruded rod) the Table 3.7.10.0(g3) show both ST and LT values for transverse directions. For a rod with circular cross section there is really no Short and Long transverse ...
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Analysis Of Planar Frame Using Hardy Cross Method (Moment Distribution) With Sway
The image shown below is a sketch of the structure/frame that I am attempting to analyse using the Hardy Cross (Moment Distribution) Method. I need to find the bending moments, axial forces and shear ...
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Will drilling a hole in a pane of glass reduce it's structural integrity?
I've got a glass box that measures 900mm x 450mm x 450mm.
The width of the glass is 6mm thick.
If I drill, cut, or grind a small hole in/through one of the faces; will it significantly affect the ...
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Steel tubing size question for building a giant swing
a customer has asked me to build a giant swing that will be suspended between two trees in a forest near their home. The swing will need to be 12 feet wide and could end up supporting eight or nine ...
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