1. What is Stress Due To Direct Load For Long Column?

Direct Stress is defined as axial thrust acting per unit area in a long column under compressive load. It represents the uniform distribution of force across the column's cross-sectional area.

2. How Does the Calculator Work?

The calculator uses the direct stress formula:

Where:

• \( \sigma \) — Direct Stress (Pascal)
• \( P_{compressive} \) — Column Compressive Load (Newton)
• \( A_{sectional} \) — Column Cross Sectional Area (m²)

Explanation: The formula calculates the stress distribution by dividing the compressive load by the cross-sectional area of the column.

3. Importance of Direct Stress Calculation

Details: Accurate stress calculation is crucial for structural design, ensuring columns can safely support applied loads without failure or excessive deformation.

4. Using the Calculator

Tips: Enter compressive load in Newtons and cross-sectional area in square meters. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the difference between direct stress and bending stress?
A: Direct stress is uniform across the cross-section from axial loading, while bending stress varies across the section due to moment loading.

Q2: How does column length affect direct stress calculation?
A: For long columns, buckling becomes a critical factor, but direct stress calculation remains valid for initial stress analysis before considering buckling effects.

Q3: What are typical units for direct stress?
A: Pascal (Pa) is the SI unit, but MPa (mega Pascal) and GPa (giga Pascal) are commonly used in engineering applications.

Q4: When is this formula applicable?
A: This formula applies to columns with uniform cross-section under pure axial compression without eccentric loading.

Q5: How does material properties affect direct stress?
A: Material properties determine the allowable stress limits, but the calculated stress value depends only on the applied load and cross-sectional area.