Real-world examples show why it's important to look at both bending and shear stress together. Here are a few situations where this matters:
Bridge Design: Bridges go through a lot of different forces. They have bending moments, which means they bend under weight, and shear forces, which can cause sliding. The rules set by AASHTO say that there should be a limit on the shear stress in materials. For concrete, this limit is often about . This shows how important it is to look at both types of stress to keep bridges safe.
High-Rise Buildings: Tall buildings face strong winds and earthquakes, leading to big bending and shear stresses. The International Building Code (IBC) advises that we should use both bending and shear analysis. This helps prevent problems during extreme events, where as many as 30% of the floors might be at risk of shear failure.
Aerospace Components: Parts of airplanes, like wings and bodies, also deal with bending and shear stresses because of lift forces. Studies show that about 70% of fatigue failures in airplanes happen because the combined stresses weren't looked at properly.
These examples highlight why careful analysis is essential to keep engineering designs safe and effective.
Real-world examples show why it's important to look at both bending and shear stress together. Here are a few situations where this matters:
Bridge Design: Bridges go through a lot of different forces. They have bending moments, which means they bend under weight, and shear forces, which can cause sliding. The rules set by AASHTO say that there should be a limit on the shear stress in materials. For concrete, this limit is often about . This shows how important it is to look at both types of stress to keep bridges safe.
High-Rise Buildings: Tall buildings face strong winds and earthquakes, leading to big bending and shear stresses. The International Building Code (IBC) advises that we should use both bending and shear analysis. This helps prevent problems during extreme events, where as many as 30% of the floors might be at risk of shear failure.
Aerospace Components: Parts of airplanes, like wings and bodies, also deal with bending and shear stresses because of lift forces. Studies show that about 70% of fatigue failures in airplanes happen because the combined stresses weren't looked at properly.
These examples highlight why careful analysis is essential to keep engineering designs safe and effective.