An Introduction to Stress and Strain
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- เผยแพร่เมื่อ 10 ก.พ. 2020
- This video is an introduction to stress and strain, which are fundamental concepts that are used to describe how an object responds to externally applied loads.
Stress is a measure of the distribution of internal forces that develop within a body to resist these applied loads.
There are two main types of stress - normal stress, which acts perpendicular to a surface, and shear stress, which acts parallel to a surface.
Strain is a measure of the displacements that occurs within a body. Again we have both normal and shear stresses.
In this video I also discuss stress-strain curves, which define how stress and strain are related. Different materials have different stress-strain curves, which can be determined by performing a tensile test.
The stress state at a single point within a body is actually made up components in both the normal and the shear directions. I explore this idea at the end of the video but looking at stresses obtained when we cut a bar using an inclined plane.
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Hello po, can you help me with the problem about stress and strain?
This are the example;
Determine the minimum diameter of the round steel bar to carry the load of 25 kpa, which is to be applied 15° to it's axis. Take the strength of the materials as the materials as 95 MPa. Illustrated the figure together with solution.
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Stress and strain: the mental feelings of an undergraduate engineering student
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