Shear stress distribution in triangular steel profile

AI Thread Summary
Calculating maximum shear stress in a triangular thin wall steel beam presents challenges due to the unique geometry compared to rectangular shapes. The standard formula for shear stress, tau=Vy*Sza/(b*Iz), requires adaptation for triangular profiles, particularly in determining the statistical moment. The triangular shape lacks a point of zero shear stress and has unequal leg directions, complicating calculations. A suggested approach for maximum shear stress is tau = 2.0*V/A, where A is the area based on the triangle's perimeter and wall thickness. Understanding the neutral axis properties is crucial for accurate shear stress distribution analysis.
Ieliepielie
Messages
1
Reaction score
0
For my job I have to calculate the maximum shear stress in a triangular thin wall steel beam. I know how to calculate this for a retangular shape.
The general formula is:
tau=Vy*Sza/(b*Iz)
with:
tau= shear stress
Vy=force
Sza = statistical moment
b= width
Iz = moment of Inertia

I just don't see how I could calculate the statistical moment for the triangle. It is a closed profile, therefore there is no point where the shear stress is zero and in contrary to the retangular shape the 'legs' don't have equal direction so it can not just be divided by two. I hope somebody can help me.
Thank you!
 
Engineering news on Phys.org
What do you know about the neutral axis? its properties?
 
Ieliepielie: My best guess, for maximum shear stress, is currently, tau = 2.0*V/A, where A = s*t, s = triangle perimeter, and t = wall thickness.
 
no idea knowing neutral axis and no properties. Its a random question. Also how to graph the distribution?
Thanks.
 
Thread 'I need a concave mirror with a focal length length of 150 feet'

Thread 'I need a concave mirror with a focal length length of 150 feet'

I need to cut down a 3 year old dead tree from top down so tree causes no damage with small pieces falling. I need a mirror with a focal length of 150 ft. 12" diameter to 36" diameter will work good but I can't think of any easy way to build it. Nothing like this for sale on Ebay. I have a 30" Fresnel lens that I use to burn stumps it works great. Tree service wants $2000.
View full post »

Thread 'Questions about the Tesla turbine'

Hi all, i have some questions about the tesla turbine: is a tesla turbine more efficient than a steam engine or a stirling engine ? about the discs of the tesla turbine warping because of the high speed rotations; does running the engine on a lower speed solve that or will the discs warp anyway after time ? what is the difference in efficiency between the tesla turbine running at high speed and running it at a lower speed ( as fast as possible but low enough to not warp de discs) and: i...
View full post »

Similar threads

Spring and its shear, torsion, tensile stresses...
Replies
1
Views
2K
Shear Stress Distribution Along a Beam
Replies
3
Views
3K
How do you Calculate shear stress?
Replies
4
Views
5K
B If the source of the pressure distribution around a lifting airfoil is known, why is not explained in textbooks?
Replies
23
Views
1K
How Do You Calculate Deflection and Shear Stress in a Tapered Shaft?
Replies
2
Views
3K
Stress on a spaghetti rod balanced from its middle
Replies
6
Views
1K
Showing resultant stresses on a volume element
Replies
2
Views
7K
Engineering Analyzing Shear & Bending on Idealized Cross Section
Replies
4
Views
2K
Shear stress distribution for a tapered beam
Replies
1
Views
2K
Engineering Calculating shear center for a "skewed" I beam
Replies
1
Views
2K

Hot Threads

Recent Insights

Back
Top