Why should shear stress be a maximum at the boundary? There is nothing being sheared there, i.e., the boundary is not being restrained.foo9008 said:Homework Statement
why the shear stress is maximum at the center ? while the normal stress is maximum at the boundary ?
Homework Equations
The Attempt at a Solution
why shouldn't the shear stresss maximum at the boundary ? this is because shear stress is to pull the 2 surface apart [/B]
If the normal stress is produced as the result of bending, then the locations the furthest away from the neutral axis of the section will also have the highest stress, in tension and compression.chetzread said:
can you explain further? i still don't understandSteamKing said:
Do you understand what bending stress is? How it's calculated?chetzread said:
bending stress is shear stress?SteamKing said:
No, bending stress is not the same as shear stress.chetzread said:
why the location further away from neutral axis will have maximum stress?SteamKing said:
Because the fibers at those locations undergo the greatest stretching/compression.chetzread said:
so , the normal stress is maximum on the the upper part of the beam , the normal stress is minimum at the lower part of the beam(expansion) ?SteamKing said:
Shear stress is the force that acts parallel to a surface, causing it to slide or deform. Normal stress, on the other hand, is the force that acts perpendicular to a surface, causing it to compress or expand. In other words, shear stress causes a material to bend or twist, while normal stress causes it to stretch or compress.
Shear stress can weaken a material by causing it to deform or fracture, while normal stress can either strengthen or weaken a material depending on its direction and magnitude. For example, a material may be stronger in tension (normal stress pulling on the material) than in compression (normal stress pushing on the material).
The magnitude of shear stress and normal stress can be influenced by factors such as the type of material, its shape and size, the applied load, and the direction and location of the load. Additionally, the internal structure and properties of the material, such as its stiffness and yield strength, can also affect the magnitude of these stresses.
Shear stress and normal stress play a crucial role in many engineering applications, including the design and analysis of structures such as bridges, buildings, and airplanes. They also play a role in everyday objects such as furniture, tools, and even our own bodies. For example, shear stress is responsible for the movement of our muscles and tendons, while normal stress helps to support our body weight.
Shear stress and normal stress can be calculated using mathematical equations based on the applied load, material properties, and geometry of the object. They can also be measured using specialized instruments such as strain gauges, which can detect the deformation of a material caused by these stresses. In some cases, shear stress and normal stress can also be estimated using computer simulations and modeling techniques.