Length of Parallel Fillet Weld given Load Carried by Parallel Fillet Weld Calculator

Length of Parallel Fillet Weld Formula:

\[ L_{parallel} = \frac{W}{1.414 \times \tau \times t_{plate}} \]

Load on Weld:

Shear Stress:

Thickness of Plate:

Tolerance:

Length of Parallel Fillet Weld (m):

Tolerance Range (m):

1. What is Length of Parallel Fillet Weld?

Definition: The length of parallel fillet weld is the distance between two consecutive ends of welds that run parallel to each other.

Purpose: This calculation helps determine the required weld length to safely carry a given load under specified shear stress conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ L_{parallel} = \frac{W}{1.414 \times \tau \times t_{plate}} \]

Where:

\( L_{parallel} \) — Length of parallel fillet weld (meters)
\( W \) — Load on weld (Newtons)
\( \tau \) — Shear stress (Pascals)
\( t_{plate} \) — Thickness of plate (meters)

Explanation: The load is divided by the product of 1.414 (factor for 45° fillet weld), shear stress, and plate thickness to determine the required weld length.

3. Importance of Weld Length Calculation

Details: Proper weld length calculation ensures structural integrity, load-bearing capacity, and safety of welded joints in construction and manufacturing.

4. Using the Calculator

Tips: Enter the load in Newtons, shear stress in Pascals, plate thickness in meters, and tolerance percentage (default ±5%). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is there a 1.414 factor in the formula?
A: The 1.414 factor accounts for the 45° angle of typical fillet welds, converting the throat thickness to the leg length.

Q2: What's a typical shear stress value for welds?
A: Shear stress values vary by material, but common structural steels might have allowable shear stresses of 100-200 MPa.

Q3: Why include a tolerance percentage?
A: The tolerance accounts for variations in material properties, workmanship, and safety factors in real-world applications.

Q4: How does plate thickness affect weld length?
A: Thicker plates require longer welds to distribute the load over a larger area and maintain proper stress levels.

Q5: Can this calculator be used for other weld types?
A: This specific formula is for parallel fillet welds. Other weld types (butt, lap, etc.) require different calculations.