Section Modulus of Stiffener Calculator

Section Modulus Formula:

\[ S = \frac{M_{max}}{f_{max}} \]

Bending Moment of Vertical Stiffeners:

N·m

Maximum Allowable Bending Stress:

N/mm²

Tolerance:

Section Modulus (mm³):

Definition: Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members.

Purpose: It helps structural engineers determine the strength of stiffeners against bending moments.

The calculator uses the formula:

\[ S = \frac{M_{max}}{f_{max}} \]

Where:

Explanation: The bending moment is divided by the maximum allowable stress to determine the required section modulus.

Details: Proper calculation ensures stiffeners can withstand applied loads without exceeding material stress limits.

Tips: Enter the bending moment in N·m, maximum allowable stress in N/mm², and optional tolerance percentage. All values must be > 0.

Q1: What units should I use for inputs?
A: Bending moment should be in Newton-meters (N·m) and stress in Newton per square millimeter (N/mm²).

Q2: What is the tolerance percentage for?
A: It allows for a safety margin (±5% typically) in the calculation.

Q3: How do I find the bending moment?
A: Calculate from applied loads and structural analysis of your design.

Q4: What's a typical maximum allowable bending stress?
A: This depends on the material - for steel it's typically 137-250 N/mm².

Q5: Why is the result in mm³?
A: Section modulus is typically expressed in cubic millimeters for precision in engineering calculations.