Total Load Carried by Plates in Compound Weld Calculator

Load on Weld Formula:

\[ W = 1.414 \times \tau \times L_{parallel} \times t_{plate} + 0.707 \times \sigma_t \times L_{single} \times t_{plate} \]

Shear Stress (τ):

Length of Parallel Fillet Weld:

Thickness of Plate:

Tensile Stress (σₜ):

Length of Single Fillet Lap Weld:

Total Load Carried by Plates (W):

1. What is Total Load Carried by Plates in Compound Weld?

Definition: This calculator determines the total load capacity of plates joined by both parallel and single fillet lap welds.

Purpose: It helps engineers and welders evaluate the strength of compound weld joints in structural applications.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ W = 1.414 \times \tau \times L_{parallel} \times t_{plate} + 0.707 \times \sigma_t \times L_{single} \times t_{plate} \]

Where:

\( W \) — Total load carried by plates (N)
\( \tau \) — Shear stress (Pa)
\( L_{parallel} \) — Length of parallel fillet weld (m)
\( t_{plate} \) — Thickness of plate (m)
\( \sigma_t \) — Tensile stress (Pa)
\( L_{single} \) — Length of single fillet lap weld (m)

Explanation: The formula combines contributions from both shear and tensile stresses in the weld configuration.

3. Importance of Weld Load Calculation

Details: Accurate load calculation ensures structural integrity, prevents weld failure, and helps optimize material usage.

4. Using the Calculator

Tips: Enter all required parameters with ±5% tolerance. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why are there two terms in the formula?
A: The first term calculates load from parallel welds (shear), while the second term calculates load from single fillet welds (tension).

Q2: What units should I use?
A: Use consistent SI units: meters for lengths, Pascals for stresses, and Newtons for the resulting load.

Q3: How accurate is this calculation?
A: The calculation provides theoretical values with ±5% tolerance. Actual performance may vary based on material quality and workmanship.

Q4: When would I use this type of weld?
A: Compound welds are used when joints must resist both shear and tensile forces simultaneously.

Q5: Does this include safety factors?
A: No, you should apply appropriate safety factors based on your application standards.