17.3:
Bearing Stress
The stress exerted on a material due to the contact pressure created while interacting with another object is called bearing stress.
Consider two plates connected by a bolt. The bolt applies an internal force onto one of the plates. This internal force is equivalent yet opposite to the force that the plate exerts back onto the bolt.
Here, the internal force is not singular but a result of numerous smaller forces that are distributed across the interior surface of the half-cylinder.
Due to the intricacy of the smaller forces and the corresponding stresses, an average nominal stress, known as bearing stress is often used for simplification.
The bearing stress is calculated by dividing the internal force by the area of the rectangle that represents the projection of the bolt on the plate section. This area is the product of the thickness of the plate and the diameter of the bolt.
The concept of bearing stress is pivotal in ensuring safe and efficient structural designs and hence enhances the lifespan of the structure.
17.3:
Bearing Stress
Bearing stress refers to the contact pressure between two separate bodies. To visualize this, imagine a bolt thrust through a plate. The bolt applies a force to the plate, which exerts an equal but opposite force back onto the bolt. This force isn't just a singular entity but a compilation of numerous smaller forces distributed across the contact surface between the bolt and the plate.
Due to the intricacy of these microforces, an average value, known as bearing stress, is often used by engineers for simplification. The bearing stress is determined by dividing the bolt's applied load by the projected area of the bolt on the plate.
Comprehending bearing stress is an essential part of structural engineering. It gives engineers a critical understanding of how different forces interact within a structure. This knowledge is crucial when designing structures as it helps ensure the safety and efficiency of their designs.
By accurately calculating bearing stress, engineers can prevent potential failures due to excessive force and extend the structure's lifespan. In conclusion, bearing stress is a pivotal concept in structural engineering. It's a key factor in determining the durability and safety of a structure.