Home
Back
Double Shear Formula:
| From: | To: |
Pin shear refers to the shear stress experienced by wooden pins or dowels when subjected to transverse forces. In double shear configuration, the pin is subjected to shear forces at two cross-sections, distributing the load more effectively.
The calculator uses the double shear formula:
Where:
Explanation: The formula calculates the average shear stress by dividing the total force by twice the cross-sectional area, accounting for the two shear planes in double shear.
Details: Accurate shear stress calculation is crucial for designing wooden connections, ensuring structural integrity, and preventing failure in timber structures and joinery applications.
Tips: Enter force in Newtons and cross-sectional area in square meters. Both values must be positive numbers. The calculator assumes double shear configuration.
Q1: What is the difference between single and double shear?
A: In single shear, the pin fails at one cross-section. In double shear, the pin fails at two cross-sections, effectively doubling the load capacity.
Q2: What are typical shear strength values for wood?
A: Shear strength varies by wood species, but typically ranges from 3-15 MPa for common construction woods.
Q3: When should double shear be used?
A: Double shear configurations are preferred when higher load capacities are required or when connecting multiple members in timber framing.
Q4: Are there limitations to this calculation?
A: This provides average shear stress. Actual failure may occur at stress concentrations, and wood anisotropy affects strength in different directions.
Q5: How does moisture content affect shear strength?
A: Higher moisture content generally reduces wood's shear strength. Calculations should consider the wood's condition and appropriate safety factors.