Allowable Bearing Stress for Rollers and Rockers Calculator

Allowable Bearing Stress Formula:

\[ F_p = \frac{F_y - 13}{20} \times (0.66 \times d_r) \]

Allowable Bearing Stress:

1. What is Allowable Bearing Stress for Rollers and Rockers?

Definition: This calculator determines the maximum bearing stress that can be safely applied to rollers and rockers in structural applications.

Purpose: It helps engineers and designers ensure that bearing stresses in structural connections remain within safe limits.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ F_p = \frac{F_y - 13}{20} \times (0.66 \times d_r) \]

Where:

\( F_p \) — Allowable bearing stress
\( F_y \) — Yield stress of steel (±5%)
\( d_r \) — Diameter of rollers and rockers (±5%)

Explanation: The formula accounts for material properties and geometric factors to determine safe bearing stress limits.

3. Importance of Allowable Bearing Stress Calculation

Details: Proper calculation prevents bearing failure in structural connections, ensuring safety and serviceability of the structure.

4. Using the Calculator

Tips: Enter the yield stress of steel and diameter of rollers/rockers. Both values have a ±5% tolerance. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is there a ±5% tolerance on inputs?
A: The tolerance accounts for material variability and manufacturing tolerances in real-world applications.

Q2: What units should I use for input values?
A: Use consistent units (MPa or psi for yield stress, mm or inches for diameter) based on your design standards.

Q3: When would I need to calculate allowable bearing stress?
A: For designing connections with rollers or rockers, such as bridge bearings or expansion joints.

Q4: How does diameter affect the allowable stress?
A: Larger diameters generally allow higher bearing stresses due to better load distribution.

Q5: Is this formula applicable to all steel grades?
A: The formula is specifically for structural steel with defined yield stress properties.