Allowable Crushing Stress Calculator by Tons of Concrete

Allowable Crushing Stress Calculator

Crushing Stress Formula:

\[ \sigma_c = \frac{S}{2 \times D_{rivet} \times t_{plate}} \]

Strength of Joint:

Rivet Diameter:

Plate Thickness:

Tolerance:

Crushing Stress (Pa):

Allowable Range (5% tolerance):

1. What is Allowable Crushing Stress?

Definition: Crushing stress is a special type of localized compressive stress which occurs at the surface of contact of two members that are relatively at rest.

Purpose: This calculator determines the allowable crushing stress in riveted joints considering manufacturing tolerances.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ \sigma_c = \frac{S}{2 \times D_{rivet} \times t_{plate}} \]

Where:

\( \sigma_c \) — Crushing stress (Pascals)
\( S \) — Strength of joint (Newtons)
\( D_{rivet} \) — Rivet diameter (meters)
\( t_{plate} \) — Plate thickness (meters)

Explanation: The joint strength is divided by twice the product of rivet diameter and plate thickness to determine the crushing stress.

3. Importance of Crushing Stress Calculation

Details: Proper calculation ensures joint integrity, prevents material failure, and accounts for manufacturing tolerances in riveted connections.

4. Using the Calculator

Tips: Enter joint strength in Newtons, rivet diameter and plate thickness in meters, and tolerance percentage. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is the factor of 2 in the formula?
A: The factor accounts for double shear in the rivet joint (two contact surfaces).

Q2: What's a typical tolerance percentage?
A: ±5% is common, but this may vary based on application requirements.

Q3: How do I determine joint strength?
A: Joint strength is typically determined through material testing or engineering specifications.

Q4: What units should I use?
A: Use consistent SI units: Newtons for force, meters for length.

Q5: Does this include safety factors?
A: No, apply appropriate safety factors separately based on your application requirements.