Mechanical Design
Selected Topics
Dr. Amr Shaaban
Assistant Professor at
Ain Shams University, Egypt.
Founder of
Design Online Academy.
https://www.facebook.com/designonlineacademy
TRADITIONAL STRESS ANALYSIS
NORMAL STRESS
SHEAR STRESS
Normal stress due to normal force
Shear stress due to shear force
τ = F/A
σ= F/A
Normal stress due to bending moment
σ= M.Y/I
Shear stress due to torsion
τ = T.r/J
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Dr.Amr Shaaban- Mechanical Design
1/20/2019
Yielding Criteria-Theories of Elastic Failure
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Dr.Amr Shaaban- Mechanical Design
1/20/2019
Yielding Criteria-Theories of Elastic Failure
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Dr.Amr Shaaban- Mechanical Design
1/20/2019
Mohr Circle
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Dr.Amr Shaaban- Mechanical Design
1/20/2019
Example
Normal Stress=10000/(50*30)=6.667 Mpa
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Dr.Amr Shaaban- Mechanical Design
1/20/2019