Mechanics of Materials Lecture 3 Chapter1 - Part 3.

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Mechanics of Materials Lecture 3 Chapter1 - Part 3

Determine internal forces at all points between A and B, B and C & C and D. How?

Cut at any point between A and B and then draw FBD.

Cut at any point between B and C and then draw FBD.

Cut at any point between C and D and then draw FBD. Question: Can we draw the internal force diagram?

Internal Force Diagram (Axial Force Diagram or Normal Force Diagram)

Question: What is the largest average normal stress in the bar?

Shear Stress

Single & Double Shear