What are other names for bending stress?

AI Thread Summary
Bending stress is distinct from yield strength and tensile strength, as it refers specifically to the stress experienced by a material when subjected to bending moments. The discussion highlights the need for clarity on terminology when accessing a materials database, particularly in identifying bending stress. The user is working with the engineers' theory of bending and has specific values for bending moment and Young's modulus but is uncertain about the correct term for bending stress in the database. It is suggested that the maximum bending stress a material can withstand may align with tensile strength if the component is under tension. Understanding these distinctions is crucial for accurate calculations in engineering applications.
John1661
Messages
2
Reaction score
1
Hello, I need to input the bending stress from a database I am not sure what name it is, would it be yield strength or tensile strength? thanks
 
Physics news on Phys.org
John1661 said:
Hello, I need to input the bending stress from a database I am not sure what name it is, would it be yield strength or tensile strength? thanks
A stress is not a strength.
Please post full details of the problem.
 
haruspex said:
A stress is not a strength.
Please post full details of the problem.
Hello,

I am using the engineers theory of bending M/I = E/R =o/y

I have M = bending moment 11.408 Nm
I = unknown
E= 6828*10^10 pascals
R=unknown
o=in materials database
y=perpendicular distance of a point in the beam from its neutral axis, the beam is .124m long with a vertical load from the centre so I think this value is 0.062m

So I was planning to use R=o/YR to find R

then with R I can use I=E/MR

So I believe I have all the given values I am told the bending stress is in the database that's where I am to find it, I have a list youngs modulus specific stiffness yield strength tensile strength specific strength and other values,

So I'm stuck on what the name of bending stress is meant to be in the database to continue working values out.
 
Sounds like you want the maximum bending stress the material can withstand. If the component is under tension then this would be the same as the tensile strength.
 
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...
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...
Back
Top