1. What is Bolt Tensile Load?

The tensile load of a bolt is the maximum axial load that can be applied to the bolt before it fails. It's determined by the material's ultimate tensile strength and the cross-sectional area of the bolt.

2. How Does the Calculator Work?

The calculator uses the tensile load formula:

Where:

• Ultimate Strength — Material's maximum stress before failure (MPa)
• Area — Cross-sectional area of the bolt (mm²)

Explanation: The formula calculates the force at which the bolt would fail under pure tension.

3. Importance of Tensile Load Calculation

Details: Calculating tensile load is essential for structural design, ensuring bolts can withstand expected loads with appropriate safety factors.

4. Using the Calculator

Tips: Enter the material's ultimate strength in MPa and the bolt's cross-sectional area in mm². Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between tensile and shear load?
A: Tensile load is axial (pulling force along the bolt's length), while shear load is transverse (force perpendicular to the bolt's axis).

Q2: How do I find the cross-sectional area of a bolt?
A: For standard bolts, use the tensile stress area (often specified in standards). For general calculations, use π×(diameter/2)².

Q3: What safety factor should I use?
A: Safety factors typically range from 1.5 to 10 depending on application, material certainty, and consequences of failure.

Q4: Does thread affect tensile strength?
A: Yes, threads reduce the effective cross-sectional area. Always use the root diameter for area calculations.

Q5: What about yield strength vs ultimate strength?
A: For design purposes, yield strength is often more important as it indicates permanent deformation, while ultimate strength indicates failure.