Preparation¶

• Read sections 1-12 to 1-17, 3-1
• More info on free body diagrams can be found at https://en.wikipedia.org/wiki/Free_body_diagram for example (or your previous textbooks)

Concepts¶

After this lesson you should be able to:

• Find the difference in stress and strength
• The relationship in uncertainty and safety factor
• understand the difference in stochastic and deterministic failure criteria
• compute reliability's base on Gaussian data
• understand the relationship of factor of safety and reliability
• understand when to use the appropriate choice of dimensions and tolerances
• compute tolerance stack up
• use appropriate units and sig figs
• draw 2D and 3D free body diagrams of a mechanical structures

Upcoming Due Dates¶

• We will check for 30 designs in your design notebook on Friday, September 30 in class
• Homework #1 will be due Monday, October 3