Why do we need to study stress and strain?

The physical properties of materials are usually represented by a stress-strain curve and knowledge of the stress-strain curve allows engineers to compare different materials, and predict the behavior of a part or structure made from a particular material (e.g. stiffness and failure strength) during processing …

What is complex stress and strain?

Materials in a stressed component often have direct and shear stresses acting in two or more directions at the same time. This is a complex stress situation. The engineer must then find the maximum stress in the material. We will only consider stresses in two dimensions, x and y.

What is the importance of stress and strength?

Stress and strength are important parameters for engineers to understand. Stress is a measure of how much force an object experiences per unit area, and strength is a material’s ability to withstand stress. When the stress exceeds the strength of a part, it fails.

Where is the stress in the word complex?

Sometimes you stumble upon an easy, familiar word, and you just can’t remember how to say it. Take “complex”, for example. You’ve probably heard it pronounced two ways, with stress on either the first or second syllable.

What are compound stresses?

But when a plane in a strained body is oblique to the applied external force this plane may be subjected to tensile or compressive stress and shear stress. i.e.; Such a system or a plane in which direct or normal stresses and shear stresses act simultaneously are called compound stress or complex stress.

Why stress is dependent on strain?

In stress-strain curve as strain or the deformation is independent and comes as result of the externally applied force, so it is taken in X-axis. Where as Stress comes in order to resist the deformation in terms of Resisting force. so it is dependent on strain and comes in Y-axis.

What is stress in engineering materials?

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.

What is the stress-strain relationship for a material?

The stress-strain relationship for a material is given by that material’s stress-strain curve. Under different loads, the stress and corresponding strain values are plotted. An example of a stress-strain curve is given below.

What is strain in strain engineering?

Strain is the deformation or displacement of material that results from an applied stress. Note: A material’s change in length (L – L0) is sometimes represented as δ.

What is complex stress in civil engineering?

1. COMPLEX STRESS Materials in a stressed component often have direct and shear stresses acting in two or more directions at the same time. This is a complex stress situation. The engineer must then find the maximum stress in the material. We will only consider stresses in two dimensions, x and y.

What is a complex stress situation?

1. COMPLEX STRESS. Materials in a stressed component often have direct and shear stresses acting in two or more directions at the same time. This is a complex stress situation. The engineer must then find the maximum stress in the material.