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.
138
questions
0
votes
2
answers
84
views
Strain As A Function of Deflection of a Hollow Cylinder
I should think that there would be a direct correlation of strain to deflection of a hollow thin-walled cylinder, but I've seen nothing as of yet. I must be missing something. For example, let's say I ...
- 1
0
votes
2
answers
102
views
How to analyze strongest (honeycomb?) structure?
To be specific I have a structure consisting of a solid material (eg PLA) consisting of a top horizontal slab (eg 3 cm x 3 cm x 0.5 cm) and a bottom horizontal slab (translated vertically, of the same ...
0
votes
1
answer
151
views
Torsional rigidity of a composite shaft in parallel
Consider the following composite shaft which consists of 3 different materials with modulus of rigidity of $G_1$, $G_2$ and $G_3$. Shaft 1 has length 2L, and shafts 2 and 3, L. Assume they are all '...
- 15
0
votes
1
answer
1k
views
Timber strength in tangential and radial directions
Normally for structural timber, two values for compressive and tension strength are given. One value is given for timber in direction of the grain, and other is given at 90 degrees (perpendicular) to ...
- 2,269
0
votes
1
answer
53
views
The hanging of lead weights in the Cavendish experiment of 1798
I'm working to build the Cavendish experiment of 1798 according to Cavendish's own specifications. I have a question about the hanging of the 150 kg lead weights.
As seen in the image, there is a ...
- 101
0
votes
1
answer
1k
views
What are the physics behind a TV wall mount?
As I was installing this wall mount, I began to wonder how exactly physics is at work with it. In other words, how does the design of the mount play a role in ensuring that the mount itself supports ...
- 121
0
votes
2
answers
169
views
Stress in a L-shaped Beam due to Thermal Expansion
A L-shaped frame $ABC$ (right angle at $B$) consisting of beams $AB$ and $BC$ are fixed at ends $A$ and $C$ to rigid walls. Find the tensile stress at $A$ when the temperature of the frame is raised ...
- 15
0
votes
1
answer
104
views
Stress on a statically indeterminate beam with nonuniform temperature distribution
The bar below has length $a$, an uniform cross-section and has both ends fixed to walls. The temperature at the left end is raised by $\Delta T_1$ and that of the right by $\Delta T_2$, where $\Delta ...
- 15
0
votes
2
answers
71
views
Resources for strength calculation for an outside aluminium loft ladder and what about it becoming brittle in cold weather?
I have been thinking for years about building an outside stair / loft ladder to climb from a platform to another one, one stair higher (3 meters). However, I never studied material strength, and I don'...
- 139
0
votes
1
answer
1k
views
Choosing metal plate to spread point load
I have a heavy object standing on 4 legs (about 30 mm in diameter each) on a wooden floor. The object is soon going to become even more heavier and I am concerned the legs could penetrate the floor. ...
- 211
0
votes
3
answers
3k
views
M16 Bolted connection. Shear strength or static load carrying capacity
Can anyone please advise in quick numbers the load carrying capacity of a bolted connection?
There are 2 vertical I columns with a horizontal I beam attached using 6 x M16 bolts at each end...somewhat ...
0
votes
1
answer
20
views
If I am to make a block using the materials for making paper, what would its compressive strength be?
If I am to make a block using the materials for making paper, what would its compressive strength be? I am interested in not the stacked paper test, but using the same material in a block form since I ...
- 298
0
votes
0
answers
519
views
Deflection of Cantilever Beam with Midpoint Spring, Integration and Superposition Methods
How can I get the deflection required below using 1) the Integration and 2) Superposition methods (two ways)?
The beam $AB$ is supported by a spring $CD$, which is fixed at $C$ with constant $k$, and ...
- 15
1
vote
1
answer
149
views
Screw Calculations/Math
At the risk of every woodworker in the world snickering at me, I'm curious how strong my wood joints are and want to know how much weight a table supports. I'm an aero engineer who ended up in EE, but ...
- 155
0
votes
2
answers
344
views
Stress-strain Curve Interpretation
A significant barrier to my understanding of typical engineering stress vs. engineering strain curves is that for certain values of stress, there are multiple values of strain (i.e., the stress-strain ...
