Can someone me with a stress strain graph.

[young blood]

all the question says is sketch a typical stress strain curve from mild steel and find the following points: yeild strength, young modulus and tensile strength. wtf am i supposed to do?

 

[Mapes]

Try googling "stress strain curve" and looking at anyone of the many images labeled with these terms. A full explanation can be found in any mechanics of materials textbook.

 

[piercas]

Sure, I can help you with understanding how to sketch a stress strain curve for mild steel and find the yield strength, Young's modulus, and tensile strength. A stress strain curve is a graphical representation of the relationship between the stress (force per unit area) and strain (change in length per unit length) of a material. It is a useful tool for understanding the mechanical properties of a material, such as its strength and elasticity.

To sketch a stress strain curve for mild steel, you will need to follow these steps:

1. Draw a horizontal axis and label it as "Strain (%)".
2. Draw a vertical axis and label it as "Stress (MPa)".
3. Choose a suitable scale for both axes based on the expected values of stress and strain for mild steel.
4. Plot the points for stress and strain on the graph. The stress values will increase as you move from left to right, while the strain values will increase as you move from bottom to top.
5. Connect the plotted points with a smooth curve to obtain the stress strain curve.

Now, to find the yield strength, Young's modulus, and tensile strength from the stress strain curve, you will need to look at the following points on the curve:

1. Yield strength: This is the point on the stress strain curve where the material starts to deform plastically, meaning it does not return to its original shape after the stress is removed. It is represented by the point where the curve starts to flatten out or "yield". Draw a line parallel to the initial linear portion of the curve and extend it until it intersects the stress strain curve. The stress value at this point is the yield strength.
2. Young's modulus: This is a measure of a material's stiffness or resistance to deformation. It is represented by the slope of the initial linear portion of the stress strain curve. To find the Young's modulus, draw a tangent to the curve at the beginning of the linear portion and measure its slope. This slope is equal to the Young's modulus.
3. Tensile strength: This is the maximum stress that a material can withstand before it breaks. It is represented by the highest point on the stress strain curve. Draw a line parallel to the horizontal axis from the highest point on the curve and extend it until it intersects the stress strain curve. The stress value at this point is the tensile strength.

I hope this helps you in understanding how to sketch a stress