How Do Permissible Loads Relate to Bending and Shear Stresses?

  • Thread starter Thread starter t_n_p
  • Start date Start date
  • Tags Tags
    Bending Shear
AI Thread Summary
Permissible loads are directly related to bending and shear stresses in structural engineering. To determine the permissible load, one must first calculate the neutral axis and moment of inertia for the beam in question. The maximum bending moment will be influenced by either tension or compression, depending on which stress is more critical. Once these values are established, the permissible load can be back-calculated from the maximum bending moment. Understanding these relationships is essential for solving related engineering problems effectively.
t_n_p
Messages
593
Reaction score
0

Homework Statement



http://img150.imageshack.us/img150/756/17311663go9.jpg

The Attempt at a Solution



I wasn't 100% sure whether this should be here or in the Engineering section, hopefully I've got it right. Anyway, I'm fairly unfamiliar with this type of problem and basically I'm just looking for an equation that will relate the permissible load to the tension and compression (part a) and an equation relating this permissible load to shear stress (part b). I've had a look through my notes and found nothing thus far.

Thanks to anyone who can help!
 
Last edited by a moderator:
Physics news on Phys.org
This belongs in the engineering section, but anyway, you first have to calculate the neutral axis and moment of inertia of the T beam. Then see which stress (compression or tension) controls the max bending moment, and back solve for P based on that moment. Please show your attempt at calculating some of these values.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

A Fatigue Failure in Structural Elements: Axial, Shear & Torsional Loads
Replies
5
Views
2K
Shear stress on surface of a bar
Replies
10
Views
4K
Engineering Transverse shear stress calculation in non-slender built up members
Replies
6
Views
2K
Overhanging Beam Shear Force and Bending Moment Diagrams Tutorial
Replies
5
Views
14K
How Do You Calculate Shear Stress in a Flowing Fluid?
Replies
3
Views
4K
Combined loading problem and failure
Replies
8
Views
3K
How Does Shear Stress in Beams Relate to Compression and Tension?
Replies
6
Views
3K
Shear flow in thin-walled members -- Hibbeler confusion
Replies
1
Views
3K
How do I find the critical value of shear stress?
Replies
2
Views
3K
Stress analysis for a Bent Pipe
Replies
1
Views
6K

Hot Threads

Recent Insights

Back
Top