Required Thickness Formula:
Definition: This calculator determines the minimum thickness required for a jacket closer member based on jacket width, design pressure, and material stress.
Purpose: It helps engineers design pressure vessels and jackets that can withstand specified operating conditions.
The calculator uses the formula:
Where:
Explanation: The formula calculates the minimum thickness needed to withstand the design pressure while considering material stress limits.
Details: Proper thickness calculation ensures structural integrity, safety, and compliance with pressure vessel design standards.
Tips: Enter jacket width (mm), design jacket pressure (N/mm²), and allowable stress (N/mm²). All values must be > 0. Results include ±5% tolerance.
Q1: What is the 0.886 factor in the formula?
A: This is an empirical constant derived from pressure vessel design standards that accounts for geometric and material factors.
Q2: How is jacket width measured?
A: Jacket width is the internal clearance between jacket walls, measured in millimeters.
Q3: What units should be used?
A: Consistent units must be used (mm for length, N/mm² for pressure and stress).
Q4: Does this include safety factors?
A: The allowable stress typically already includes safety factors based on material properties.
Q5: Why is there a ±5% tolerance?
A: This accounts for manufacturing tolerances and material property variations.