Stress and Strain
3
Free Body Diagrams
•Shows all external forces acting on the body
•Procedure
1.Identify the isolated body and draw it
2.At all force locations draw the vectors
a.Supports
b.Connections
c.Contacts
3.Add the Weight force
4.Label forces with their value or a letter for unknowns
5.Add a coordinate system
6.Add geometric data (Lengths, angles, … )