Yield Limit Mechanisms

 

Find Smallest Z for Various Yield Modes

NDS figure I1 and table 11.3.1A
Wood Handbook figure 8-5 and table 8-5

1. uniform dowel bearing

• no rotation
• no bending
• m + s

2. nonuniform dowel bearing

• rotation
• not in double-shear due to symmetry

3. one plastic hinge near each shear plane

• hinge in one member
• wood crushing in other member (determines label)
• m + s

4. two plastic hinges near each shear plane