1. What is Longitudinal Stress?

Longitudinal Stress is defined as the stress produced when a pipe is subjected to internal pressure. It acts parallel to the longitudinal axis of the pipe and is an important factor in pipe design and safety analysis.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \sigma_l \) — Longitudinal Stress (Pascal)
• \( p \) — Pressure Rise at Valve (Pascal)
• \( D \) — Diameter of Pipe (Meter)
• \( t_p \) — Thickness of Liquid Carrying Pipe (Meter)

Explanation: This formula calculates the stress along the length of a pipe when subjected to internal pressure, considering the pipe's diameter and wall thickness.

3. Importance of Longitudinal Stress Calculation

Details: Accurate calculation of longitudinal stress is crucial for pipe design, material selection, and ensuring structural integrity under internal pressure conditions.

4. Using the Calculator

Tips: Enter pressure rise in Pascal, diameter in meters, and thickness in meters. All values must be positive and non-zero.

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for input values?
A: Pressure should be in Pascal, diameter and thickness in meters for consistent results.

Q2: How does pipe thickness affect longitudinal stress?
A: Thicker pipes generally experience lower longitudinal stress for the same internal pressure.

Q3: What is the typical range of longitudinal stress in pipes?
A: The stress varies widely depending on pipe material, diameter, thickness, and operating pressure.

Q4: Are there safety factors to consider?
A: Yes, engineering designs typically include safety factors to account for material variations and unexpected pressure surges.

Q5: Can this formula be used for all pipe materials?
A: The formula is generally applicable, but material-specific properties should be considered for complete analysis.