All Questions
11
questions
0
votes
0
answers
252
views
How much weight can aluminum square tube support?
I'm building a bed platform in a campervan and trying to determine what type of aluminum tube to buy.
I'm thinking to purchase 6061-T6511 aluminum Square Tube with 1.5" width, 1.5" height ...
- 101
0
votes
2
answers
157
views
Optimal shape for cantilever beam subject to body weight only
How can I find the optimal shape of a cantilever beam subject only to its own weight, and having the following restrictions?
The cross section is a rectangle
Only the height of the rectangle can vary ...
- 104
0
votes
1
answer
46
views
Predicting breaking force of beam per length based on one testing
I've made a plywood carbon sheet and tested its breaking force, for a 200mm long, 50mm wide, 16mm thick it was 100kg +-
I was wondering if it's enough to help me predict what will be the breaking ...
- 115
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
3
answers
593
views
Design procedure used in beam design
In the design of beams, the principal stresses and absolute maximum shear stresses are not calculated. Instead, we calculate maximum bending stress using flexure formula and equate it to allowable ...
- 88
0
votes
4
answers
359
views
When we replace supports distributed reaction by point reaction in thin beams, is that considered an application of Saint-Venant principle?
I read about Saint-Venant principle which is about the effect of replacing forces by equivalent forces system that effect on the same small region of a rigid body, all examples I come across are on ...
0
votes
2
answers
7k
views
Help with understanding bending moment diagram of a frame structure
I have an exercise where I should calculate and draw a bending moment diagram for a frame structure. The frame structure is similar to the one below, image taken from http://structx.com:
I would like ...
- 1
1
vote
3
answers
138
views
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 (...
- 111
4
votes
2
answers
508
views
Beam buckling criterion?
If I have an I beam which I subject to some bending load, how can I calculate when the thinner middle part of the I beam will buckle? I though I could use Euler's critical load formula here, but it's ...
- 159
-1
votes
1
answer
156
views
RHS beam deflection with support on one end
A 1400 mm long galv steel beam, size 40x20x2.
80 mm of the beam on one end is welded in flat position to a platform.
How much weight can I put safely on the other end?
What if instead of being flat ...
- 11
0
votes
1
answer
3k
views
Along which direction is the area moment of inertia taken in bending moment equation?
Is it in the same direction of the applied load or in the co-planar perpendicular direction to the load applied?
- 13