Pre-Analysis & Start-Up

In the Pre-Analysis step, we'll first consider how to reduce the model using periodicity. Then, we'll review the following:

• Mathematical model
• Numerical solution strategy
• Hand-calculations of expected results

Model Reduction 

We'll model half-a-bolt assuming periodic symmetry. The reduced model has four parts which are indicated in different colors in the image below.

Mathematical Model 

Numerical Solution Procedure in ANSYS

Hand-Calculations of Expected Results

Reaction in Axial Direction

Average gas pressure = (12.17+47.72)/2 ~ 30 psi
Projected area in z direction = $ \pi*(r_{bottom}^2 - r_{top}^2)$\\
Radius at top, $r_{top} = \\
Radius at bottom, $r_{top} = \\

Radius at top 

Start-Up

Go to Step 2: Geometry

Go to all ANSYS Learning Modules