9:00

• The Martian Movie
• Questions?
• Are office hours at good times?
• Review: Free Body Diagrams
  • Draw system bound in whatever way is useful for problem
  • Equilibrium: F = 0, M = 0
  • Basic maximum stress for axial, bending, and torsion
• Pin joint demo

Today's goals:

• Review of transversely loaded beams
• Be able to draw shear and bending moment diagrams
• Utilize singularity functions to efficiently draw diagrams

9:10

Shear and Bending diagrams

• Relation of q, V, M

9:20

• Shear and bending question

9:25

• Singularity functions for beams
• Example with singularity functions

9:40

• Singularity question

9:45

Wrap up

• Beam shear and moment values are piecewise functions
• Load, shear, and bending are related by derivatives
• Complex loadings can be more easily calculated with singularity functions

9:50

Break

10:00

• Description of the next step in the project: 5 more detailed designs are due next friday.
  • Answer more questions, more sketches, add calculations
  • Around 2 full notebook pages that are dense per design: ultimately will need 3 pages of computer content for the final design
  • Focus on designs that will allow you to think about the loads, stresses, strength, motion
  • Describe lightning talks for next Friday
    • 2 minutes to describe to your group a design
    • 2 designs per member
    • practice before hand, make short script about main points (2 minutes doesn't give you time to flounder)
    • 2 minute review from groups

Questions?

10:10

• Get in groups and work together on the homework or the provided examples
• Check on group sizes
• Have notebook out and ready for grading

10:45

• Questions
• Collect feedback: feedback for the week will happen on Fridays
• positive, negative for the week and time spent outside of class