Maximum Load inside Pressurized Cylinder when Joint is on verge of opening Calculator

Maximum Force Formula:

\[ P_{max} = P_l \times \left( \frac{k_c + k_b}{k_b} \right) \]

Initial Preload Due to Bolt Tightening:

Combined stiffness for gasket joint:

N/m

Stiffness of pressurized cylinder bolt:

N/m

Maximum force inside pressurized cylinder: N

1. What is Maximum Load inside Pressurized Cylinder?

Definition: This is the maximum load (force) inside the cylinder when the joint is on the verge of opening or the capacity of the cylinder to bear the load.

Purpose: It helps engineers determine the safety limits of pressurized cylinders and bolted joints.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ P_{max} = P_l \times \left( \frac{k_c + k_b}{k_b} \right) \]

Where:

\( P_{max} \) — Maximum force inside pressurized cylinder (N)
\( P_l \) — Initial preload due to bolt tightening (N)
\( k_c \) — Combined stiffness for gasket joint (N/m)
\( k_b \) — Stiffness of pressurized cylinder bolt (N/m)

Explanation: The formula calculates the maximum internal pressure that can be applied before the joint starts to separate.

3. Importance of Calculation

Details: Proper calculation ensures structural integrity, prevents joint failure, and maintains safety in pressurized systems.

4. Using the Calculator

Tips: Enter the initial preload, combined stiffness, and bolt stiffness. All values must be > 0. Results include ±5% tolerance.

5. Frequently Asked Questions (FAQ)

Q1: Why is the ±5% tolerance included?
A: This accounts for variations in material properties, manufacturing tolerances, and measurement uncertainties.

Q2: How do I determine the combined stiffness?
A: Combined stiffness is calculated from the stiffness values of cylinder cover, cylinder flange, and gasket.

Q3: What affects bolt stiffness?
A: Bolt material, diameter, length, and thread design all influence stiffness.

Q4: How does preload affect the result?
A: Higher preload increases the maximum force the joint can withstand before opening.

Q5: What safety factor should I use?
A: Always apply appropriate safety factors beyond the calculated maximum load.