Welded Joint Strength Calculator (Same Wide Plate)

Welded Joint Strength Calculator (Same Wide Plate) - Joint Strength and Efficiency

Plate Thickness:

Plate Width:

Weld Size:

Number of Welds:

Electrode Support Load:

Plate Allowable Tensile Strength:

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1. What is the Welded Joint Strength Calculator?

Definition: The Welded Joint Strength Calculator determines the maximum load a welded joint can support and its efficiency compared to the base metal, reporting results in kips.

Purpose: Assists engineers in analyzing weld joint strength and ensuring structural integrity.

Reference:Applied Strength of Materials for Engineering Technology

http://www.etcs.pfw.edu/~dupenb/ET_200/Applied%20Str%20of%20Mat%20for%20ET%20v14%20July%202018.pdf

2. How Does the Calculator Work?

Formula:

\( P_s = N \cdot P_{weld} \)

Where:

\( P_s \): Joint strength (kips)
\( N \): Number of welds
\( P_{weld} \): Electrode support load (kips/in) * weld length

\( Efficiency = \frac{P_s}{P_{plate}} \cdot 100 \)

Where:

\( P_{plate} \): Gross plate strength (kips)

Steps:

Step 1: Input Plate Thickness. Enter the thickness (e.g., 0.375 in).
Step 2: Input Plate Width. Enter the width (e.g., 6 in).
Step 3: Input Weld Size. Enter the weld size (e.g., 0.3125 in).
Step 4: Input Number of Welds. Enter the number of welds (e.g., 2).
Step 5: Input Electrode Support Load. Enter the load (e.g., 4.63 kips/in).
Step 6: Input Allowable Tensile Strength. Enter the strength (e.g., 21.6 ksi).
Step 7: Calculate. The calculator computes joint strength and efficiency.

3. Importance of Welded Joint Calculation

Calculating weld joint strength is crucial for:

Joint Integrity: Ensures welds can withstand applied loads.
Design Safety: Prevents failure at the weld or base metal.

4. Using the Calculator

Example: Plate Thickness = 0.375 in, Plate Width = 6 in, Weld Size = 0.3125 in, Number of Welds = 2, Electrode Load = 4.63 kips/in, Tensile Strength = 21.6 ksi:

Step 1: \( P_{weld} = 4.63 \, \text{kips/in} \cdot 6 \, \text{in} = 27.78 \, \text{kips} \).
Step 2: \( P_s = 2 \cdot 27.78 = 55.56 \, \text{kips} \).
Step 3: \( P_{plate} = 6 \cdot 0.375 \cdot 21.6 = 48.6 \, \text{kips} \).
Step 4: \( Efficiency = \frac{55.56}{48.6} \cdot 100 \approx 114\% \).

5. Frequently Asked Questions (FAQ)

Q: What is joint efficiency?
A: Joint efficiency is the ratio of joint strength to base metal strength, expressed as a percentage.

Q: Why use kips?
A: Kips is a standard unit for load in engineering calculations.