Load and Stress; 3 angles with different shapes corners

In summary, the conversation discusses the strength of different angled structures. The three angles are mounted in the ground and made of the same material, with the same force acting on all of them. The strongest angle is debated, with some factors being considered such as surface area, concave notches, and material and fabrication process. The conversation also questions if this was for schoolwork and why the original diagram was not included.
  • #1
adamkhalid02
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Post moved from the technical forums to the Schoolwork forums
Summary: Each angle has a different type of corner, rectangular, circular, and triangular. Which one is the strongest?

D7FFC1C0-7A18-4A1E-8E56-33258F9BB4CC.jpeg

All three angles are mounted in the ground and made of the same material. The same force ‘w’ towards the ground is acting on all angles, which one is the strongest?
Please explain why it is the strongest, I believe it is the circular one but can’t give a reason other than it has the most surface area to support the ‘w’.
 
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  • #2
Welcome!
The triangular one could also have "the most surface area to support the ‘w’."
What have you studied about the subject?
 
  • #3
adamkhalid02 said:
The same force ‘w’ towards the ground is acting on all angles, which one is the strongest?
Normally I would say #2 is the strongest, because it has no concave notch that will focus energy to one point.
But in this special case, where the concave face is always under compression, I believe the answer would probably be #3, since the line between w and the foundation is straightest, which puts the least tension on the convex face.

But it is so easy to be distracted by an ellegant style.
Fundamentally, they all connect to the ground through the same section, which is also the section with maximum moment, so all structures have the same static limit. The answer will come down to material and fabrication process.

#2 has the lowest material costs,
#1 is easiest to fabricate from stock materials, while
#3 has the greatest additional structural weight, so it comes last.
 
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  • #4
Baluncore said:
Normally I would say #2 is the strongest, because it has no concave notch that will focus energy to one point.
But in this special case, where the concave face is always under compression, I believe the answer would probably be #3, since the line between w and the foundation is straightest, which puts the least tension on the convex face.

But it is so easy to be distracted by an ellegant style.
Fundamentally, they all connect to the ground through the same section, which is also the section with maximum moment, so all structures have the same static limit. The answer will come down to material and fabrication process.

#2 has the lowest material costs,
#1 is easiest to fabricate from stock materials, while
#3 has the greatest additional structural weight, so it comes last.
Thank you so much!
 
  • #5
adamkhalid02 said:
Thank you so much!
So was this question for schoolwork? What was the answer you found in your grading? What class was this for, and did it involve any FEA analysis?
 
  • #6
If this was schoolwork, why did the OP not post the original diagram?
 
  • #7
Baluncore said:
If this was schoolwork, why did the OP not post the original diagram?
Beats me, let's ask Adam...
 

FAQ: Load and Stress; 3 angles with different shapes corners

1. What is load and stress?

Load and stress refer to the forces and pressure applied to an object or material. Load is the external force acting on an object, while stress is the internal resistance of the object to the applied force.

2. How do different shapes and corners affect load and stress?

The shape and corners of an object can greatly impact the distribution of load and stress. Objects with sharp corners and edges are more susceptible to stress concentrations, while objects with rounded corners have a more even distribution of stress. Different shapes also have different load-bearing capacities, with some being able to withstand higher loads than others.

3. What is the relationship between load and stress?

The relationship between load and stress is directly proportional. This means that as the load on an object increases, so does the stress. However, the amount of stress that an object can withstand before failing depends on its material properties and design.

4. How do engineers consider load and stress when designing structures?

Engineers must carefully consider the load and stress that a structure will experience during its lifetime. They use mathematical models and simulations to determine the maximum load and stress that a structure can withstand, and then design it accordingly. They also take into account factors such as material properties, safety factors, and potential failure modes.

5. How can load and stress be managed or reduced in structures?

There are several ways to manage or reduce load and stress in structures. One way is to use materials with higher strength and durability, such as steel or reinforced concrete. Another way is to distribute the load evenly across the structure by using trusses or arches. Additionally, engineers can use techniques such as adding reinforcements or changing the shape of the structure to better withstand the applied load and stress.

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