Is stress same for same material?

(In the stress-strain curve shown here, the proportional limit and the elastic limit are assumed to be the same.) As long as the applied stresses are below the proportional limit, stress-strain relationships are the same whether the material is under tension or compression.

Which property of the material will govern the selection for a machine member subjected to a repeated load?

In the mechanics of materials, the strength of a material is its ability to withstand an applied load without failure or plastic deformation.

What type of stress happens when the force is going to pull the material?

Stress is generally defined as force per unit area. When forces pull on an object and cause its elongation, like the stretching of an elastic band, we call such stress a tensile stress. When forces cause a compression of an object, we call it a compressive stress.

What is load in strength of materials?

In materials science, the strength of a material is its ability to withstand an applied load without failure. A load applied to a mechanical member will induce internal forces within the member called stresses when those forces are expressed on a unit basis.

What is mechanical property material?

The mechanical properties of a material are those properties that involve a reaction to an applied load. Mechanical properties are also used to help classify and identify material. The most common properties considered are strength, ductility, hardness, impact resistance, and fracture toughness.

What properties will be considered while selecting the material?

Some of the important characteristics of materials are : strength, durability, flexibility, weight, resistance to heat and corrosion, ability to cast, welded or hardened, machinability, electrical conductivity, etc. is the best indicator.

What is elasticity limit?

Elastic limit is defined as the maximum stress that a material can withstand before the permanent deformation. It is the highest limit of the material before the plastic deformation of the material can occur. Once the stress or force is removed from the material, the material comes back to its original shape.

What is relation between stress and strain?

Hooke’s law explains the relationship between stress and strain. According to Hooke’s law, the strain in a solid is proportional to the applied stress and this should be within the elastic limit of that solid.

When a structure is subjected to stress the irrevocable deformation that remains in the structure is?

Elasticity is the way a material initially responds when it is subjected to stresses. Elasticity refers to the material’s ability to deform in a non-permanent way, meaning that when the stress load is removed from the material it will recover its original form.

What is the effect of the stresses on the building structures?

Compressive stress can change the shape of structural members and in struts, if it reaches a level of stress that is too much for the member, usually called buckling.

What are the two types of stress in a structure?

There are two types of stress that a structure can experience: 1. Normal Stress and 2. Shear Stress. When a force acts perpendicular (or “normal”) to the surface of an object, it exerts a normal stress.

How do you calculate the stress in different materials?

Substitute E = σ / ε in the above for each material and the resulting equation represents a relation between the stress in each material, function only of the known elastic/thermal expansion properties and the temperature difference.

What is the difference between normal stress and shear stress?

Stress is the a measure of what the material feels from externally applied forces. It is simply a ratio of the external forces to the cross sectional area of the material. Forces that are applied perpendicular to the cross section are normal stresses, while forces applied parallel to the cross section are shear stresses.

What is the difference between force and stress in physics?

Force is something that tries to move things. If things are already moving, it makes them move faster. Stress is force per unit area, as in the equation for Young’s modulus. It is the tearing (or compressive) effect of the force felt by all the bonds that are keeping the object together.

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