Strength of materials -- Normal stresses and Shear stresses

In summary, normal stress and shear stress are two types of forces that act on a material in different directions. Normal stress causes compression or stretching, while shear stress causes sliding or deformation. To calculate these stresses, the force is divided by the cross-sectional area of the material. The strength of a material is influenced by factors such as its type, composition, temperature, and loading conditions. It can be measured through tests that apply a load and measure the material's response. Knowing the normal and shear stresses in a material is important for designing structures and identifying weak points to improve its strength.
  • #1
skatoulis100
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Homework Statement



https://ibb.co/imui5b[/B]
imui5b
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hey i need to calculate max normal stress at BC and max shear stress at b and c
is my torque equation right?

Homework Equations

The Attempt at a Solution


so i thought
Σma=0 Cx*6+80*6+80*2=0
i ll find cx
and then ΣFx=0
and ΣFy=0
 
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  • #2
Your moment balance is correct.
 
  • #3
skatoulis100 said:
Cx*6+80*6+80*2=0
Which way are you defining as positive for forces in the X direction, to the left or to the right?
 

1. What is the difference between normal stress and shear stress?

Normal stress is the force per unit area acting perpendicular to a cross-sectional area of a material, while shear stress is the force per unit area acting parallel to a cross-sectional area of a material. In other words, normal stress causes a material to compress or stretch, while shear stress causes a material to slide or deform.

2. How do you calculate normal stress and shear stress in a material?

To calculate normal stress, divide the force acting on a material by its cross-sectional area. Shear stress can be calculated by dividing the force parallel to the material's cross-sectional area by its cross-sectional area.

3. What factors affect the strength of materials?

The strength of materials can be affected by factors such as the type of material, its composition, temperature, loading conditions, and the presence of defects or imperfections.

4. How can we measure the strength of a material?

The strength of a material can be measured through various tests, such as tension, compression, bending, or torsion tests. These tests involve applying a load to the material and measuring its response, such as deformation or failure.

5. What is the significance of knowing the normal and shear stresses in a material?

Understanding the normal and shear stresses in a material is crucial for designing structures or components that can withstand the expected loads and forces. It also helps in identifying potential weak points in a material and determining how to reinforce or improve its strength.

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