Corresponding Bending Stress with Section Modulus Calculator

Axial Bending Stress Formula:

\[ f_{wb} = \frac{M_w}{Z} \]

Axial Bending Stress at Base: Pa

1. What is Axial Bending Stress at Base of Vessel?

Definition: Axial Bending Stress at Base of Vessel refers to the stress that occurs when wind exerts a force on the vessel, causing it to bend or deform.

Purpose: This calculation helps engineers ensure the vessel structure can withstand wind loads without excessive deformation or failure.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ f_{wb} = \frac{M_w}{Z} \]

Where:

\( f_{wb} \) — Axial bending stress at base (Pascals)
\( M_w \) — Maximum wind moment (Newton-meters)
\( Z \) — Section modulus of skirt cross section (cubic meters)

Explanation: The maximum wind moment is divided by the section modulus to determine the bending stress at the vessel's base.

3. Importance of Bending Stress Calculation

Details: Proper calculation ensures vessel structural integrity under wind loads, preventing catastrophic failures and ensuring safety margins.

4. Using the Calculator

Tips: Enter the maximum wind moment in N·m and section modulus in m³. The ±5% indicates typical tolerance in these measurements.

5. Frequently Asked Questions (FAQ)

Q1: What is section modulus?
A: Section modulus is a geometric property that describes a cross-section's resistance to bending.

Q2: How is maximum wind moment determined?
A: It's calculated based on wind speed, structure size/shape, and exposure factors per engineering standards.

Q3: Why the ±5% tolerance?
A: This accounts for typical variations in material properties and wind load estimations.

Q4: What's an acceptable bending stress value?
A: Depends on material, but typically kept below yield strength with safety factors applied.

Q5: How does this relate to vessel design?
A: This calculation helps verify the skirt/base design can withstand operational wind loads.