Torque is a measure of the rotational force applied to an object. It is calculated by multiplying the force applied to the object by the distance from the point of rotation. In terms of shear stress, torque is related to the amount of force applied to a material that causes it to twist or deform.
The allowable shear stress for a material is determined by its physical properties, such as its yield strength, ductility, and hardness. It can also be affected by external factors like temperature, corrosion, and loading conditions.
The allowable shear stress for a material can be calculated by dividing its yield strength by a safety factor. The safety factor is typically determined based on the material's intended use and the level of risk involved.
Allowable shear stress is the maximum stress that a material can withstand without permanently deforming or failing. Ultimate shear stress, on the other hand, is the stress at which a material will fail or break. Allowable shear stress is a safety measure to prevent failure, while ultimate shear stress is a measure of the material's maximum strength.
To ensure that the shear stress in a structure or machine is within the allowable limit, engineers and designers must carefully consider the materials used, the design of the structure, and the expected loading conditions. They must also perform calculations and simulations to determine the expected stresses and make adjustments as necessary to ensure that the shear stress does not exceed the allowable limit.